Source: https://patents.google.com/patent/CN105657964B/en
Timestamp: 2020-04-02 10:25:50
Document Index: 507069333

Matched Legal Cases: ['art 542', 'art 542', 'art 542', 'art 542', 'art 542', 'art 12', 'art 12', 'art 12', 'art 12', 'art 12', 'art 18', 'art 18', 'art 18', 'art 12', 'art 18', 'art 20', 'art 20', 'art 21', 'art 20', 'art 18', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'arts 21', 'arts 20', 'art 22', 'art 22', 'art 22', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 22', 'art 22', 'art 22', 'art 24', 'art 24', 'art 24', 'art 24', 'art 20', 'art 24', 'art 24', 'art 18', 'art 22', 'art 18', 'art 24', 'art 18', 'art 22', 'art 18', 'art 24', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 14', 'art 14', 'art 22', 'art 14', 'art 14', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 20', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 542', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 12', 'art 18', 'art 18', 'art 12', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 18', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'arts 20', 'art 22', 'art 22', 'art 22', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 22', 'art 22', 'art 22', 'art 20', 'arts 20', 'art 25', 'art 25', 'art 25', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 25', 'art 25', 'art 25', 'art 18', 'art 22', 'art 25', 'art 18', 'art 22', 'art 25', 'art 14', 'art 14', 'art 22', 'art 15', 'art 15', 'art 25', 'art 15', 'art 15', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 20', 'arts 20', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 200', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 20', 'art 20', 'art 20', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 20', 'art 21', 'art 21', 'art 20', 'art 20', 'art 21', 'art 21', 'art 20']

CN105657964B - High-frequency signal circuit and electronic equipment including the high-frequency signal circuit - Google Patents
High-frequency signal circuit and electronic equipment including the high-frequency signal circuit Download PDF
CN105657964B
CN105657964B CN201610124559.4A CN201610124559A CN105657964B CN 105657964 B CN105657964 B CN 105657964B CN 201610124559 A CN201610124559 A CN 201610124559A CN 105657964 B CN105657964 B CN 105657964B
CN201610124559.4A
CN105657964A (en
2012-02-14 Priority to JP2012-029690 priority Critical
2012-02-14 Priority to JP2012029690 priority
2012-04-23 Priority to JP2012097926 priority
2012-04-23 Priority to JP2012-097926 priority
2012-07-27 Priority to JP2012167217 priority
2012-07-27 Priority to JP2012-167217 priority
2012-11-14 Priority to JP2012-250096 priority
2012-11-14 Priority to JP2012250096A priority patent/JP5794218B2/en
2013-02-06 Application filed by 株式会社村田制作所 filed Critical 株式会社村田制作所
2013-02-06 Priority to CN201310047467.7A priority patent/CN103249245B/en
2016-06-08 Publication of CN105657964A publication Critical patent/CN105657964A/en
2019-03-08 Publication of CN105657964B publication Critical patent/CN105657964B/en
239000004020 conductor Substances 0 claims abstract description 295
239000000463 materials Substances 0 abstract description 118
The present invention provides the high-frequency signal circuit for the generation that can inhibit low-frequency noise and the electronic equipment including the high-frequency signal circuit.Signal line (S1) is constituted by alternately connecting setting in the line part (20) on the surface of dielectric sheet material (18a) and the line part (21) being arranged on the surface of dielectric sheet material (18b).Earth conductor (22) be arranged on dielectric sheet material (18a), and from z-axis direction overlook when, earth conductor (22) is Chong Die with line part (21) and not Chong Die with line part (20).The characteristic impedance of line part (20) is different from the characteristic impedance of line part (21).
High-frequency signal circuit and electronic equipment including the high-frequency signal circuit
The present patent application is that applicant submitted on 2 6th, 2003, application No. is 201310047467.7, invention name The referred to as divisional application of the application for a patent for invention of " high-frequency signal circuit and the electronic equipment including the high-frequency signal circuit ".
The present invention relates to high-frequency signal circuit and including the electronic equipment of high-frequency signal circuit, more particularly, to high frequency is believed The high-frequency signal circuit and electronic equipment including the high-frequency signal circuit of number transmission.
As existing high-frequency signal circuit, it is known to signal line documented by such as patent document 1.Figure 46 is patent text The exploded view of signal line 500 documented by offering 1.
Signal line 500 shown in Figure 46 includes main body 512, earth conductor 530a, 530b, 534 and signal wire 532.Main body 512 are constituted by stacking gradually insulating trip 522a~522d.
Signal wire 532 is arranged on insulating trip 522c.Earth conductor 530a, 530b are arranged on insulating trip 522b. Earth conductor 530a, 530b are opposite across slit S.When overlooking from stacking direction, slit S is Chong Die with signal wire 532.Thus, it connects Earthed conductor 530a, 530b be not opposite with signal wire 532.
Earth conductor 534 is arranged on insulating trip 522d, and earth conductor 534 is across insulating trip 522c and signal wire 532 is opposite.
In the signal line 500 constituted as described above, earth conductor 530a, 530b be not opposite with signal wire 532, Accordingly, it is difficult to form capacitor between earth conductor 530a, 530b and signal wire 532.Therefore, even if reducing earth conductor The interval on stacking direction between 530a, 530b and signal wire 532, also can inhibit the capacitor formed between them to become Greatly and the characteristic impedance of signal wire 532 and desired characteristic impedance can be inhibited to deviate.As a result, the energy in signal line 500 Try hard to the thinning of realization body 512.
However, as described below, being easy to produce lower frequency in the signal line 500 documented by patent document 1 Noise.In the following, set the both ends of signal line 500 as end 540a, 540b, if end 540a, 540b of signal line 500 it Between part be line part 542.
As shown in figure 46, the line part 542 of signal line 500 has uniform cross section structure.Therefore, in line part 542 Signal wire 532 characteristic impedance it is uniform.On the other hand, for example, end 540a, 540b to be inserted into the jack of circuit substrate In.At this point, the terminal in jack is connected with the both ends of signal wire 532, therefore, parasitic resistance is generated in these coupling parts It is anti-.Moreover, the signal wire 532 in end 540a, 540b is opposite with the conductor in circuit substrate jack, therefore, in end 540a, Parasitic capacitance is formed between conductor in signal wire 532 in 540b and circuit substrate jack.As a result, end 540a, The characteristic impedance of signal wire 532 in 540b becomes different from the characteristic impedance of signal wire 532 in line part 542.
Herein, if the characteristic impedance of the signal wire 532 in end 540a, 540b and the signal wire 532 in line part 542 Characteristic impedance is different, then high-frequency signal reflection is generated in end 540a, 540b.It is generated between end 540a, 540b as a result, Low frequency standing wave of the distance as 1/2 wavelength.As a result, giving off low-frequency noise from signal line 500.
Patent document 1: No. 2011/018934 bulletin of International Patent Application Publication
As a result, the purpose of the present invention is to provide the high-frequency signal circuit for the generation that can inhibit low-frequency noise and including the height The electronic equipment of frequency signal line.
Technical scheme applied to solve the technical problem
High-frequency signal circuit involved in one embodiment of the present invention is characterised by comprising: main body；Signal line, The signal line passes through the first line portion on the first layer that the main body is arranged in and is arranged on the second layer of the main body The second line part alternately connection to constitute；And first earth conductor, first earth conductor setting in the first layer or In third layer, which is located at the side opposite with the second layer side of the first layer, and from the master of the main body When the normal direction in face is overlooked, first earth conductor is Chong Die with the multiple second line part and not with the multiple the The overlapping of one line part, the characteristic impedance in the first line portion are different from the characteristic impedance of second line part.
Electronic equipment involved in one embodiment of the present invention is characterised by comprising: shell；And it is arranged described The intracorporal high-frequency signal circuit of shell, the high-frequency signal circuit include: main body；Signal line, the signal line will be by that will be arranged The second line part in the first line portion on the first layer of the main body and the second layer that the main body is arranged in alternately connects To constitute；And first earth conductor, first earth conductor are arranged on the first layer or third layer, which is located at The side opposite with the second layer side of the first layer, and from the normal direction of the interarea of the main body overlook when, First earth conductor is Chong Die with the multiple second line part and not Chong Die with the multiple first line portion, and described The characteristic impedance of one line part is different from the characteristic impedance of second line part.
According to the present invention, the generation of low-frequency noise can be inhibited.
Fig. 1 is the stereoscopic figure of high-frequency signal circuit involved in embodiment 1.
Fig. 2 is the exploded view of high-frequency signal circuit involved in embodiment 1.
Fig. 3 is the cross section structure figure of high-frequency signal circuit involved in embodiment 1.
Fig. 4 is the top view of high-frequency signal circuit involved in embodiment 1.
Fig. 5 is the cross section structure figure of high-frequency signal circuit involved in embodiment 1.
Fig. 6 is the stereoscopic figure and cross section structure figure of the connector of high-frequency signal circuit.
Fig. 7 is to overlook to have used figure obtained from the electronic equipment of high-frequency signal circuit from y-axis direction and z-axis direction.
Fig. 8 is the top view of high-frequency signal circuit involved in variation 1.
Fig. 9 is the curve graph for indicating simulation result.
Figure 10 is the exploded view of high-frequency signal circuit involved in variation 2.
Figure 11 is the exploded view of high-frequency signal circuit involved in variation 3.
Figure 12 is the exploded view of high-frequency signal circuit involved in embodiment 2.
Figure 13 is the cross section structure figure of high-frequency signal circuit involved in embodiment 2.
Figure 14 is the top view of high-frequency signal circuit involved in embodiment 2.
Figure 15 is the cross section structure figure of high-frequency signal circuit involved in embodiment 2.
Figure 16 is the exploded view of high-frequency signal circuit involved in variation 1.
Figure 17 is the curve graph for indicating simulation result.
Figure 18 is the curve graph for indicating simulation result.
Figure 19 is the exploded perspective view of high-frequency signal circuit involved in variation 2.
Figure 20 is the exploded perspective view of high-frequency signal circuit involved in variation 3.
Figure 21 is the exploded perspective view of high-frequency signal circuit involved in variation 4.
Figure 22 is the exploded perspective view of high-frequency signal circuit involved in variation 5.
Figure 23 is the exploded perspective view of high-frequency signal circuit involved in variation 6.
Figure 24 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 23.
Figure 25 is the exploded perspective view of high-frequency signal circuit involved in variation 7.
Figure 26 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 25.
Figure 27 is the exploded perspective view of high-frequency signal circuit involved in variation 8.
Figure 28 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 27.
Figure 29 is the exploded perspective view of high-frequency signal circuit involved in variation 9.
Figure 30 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 29.
Figure 31 is the exploded perspective view of high-frequency signal circuit involved in variation 10.
Figure 32 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 31.
Figure 33 is the exploded perspective view of high-frequency signal circuit involved in variation 11.
Figure 34 is the equivalent circuit diagram of the high-frequency signal circuit of Figure 33.
Figure 35 is the exploded perspective view of high-frequency signal circuit involved in variation 12.
Figure 36 is the top view of high-frequency signal circuit involved in variation 13.
Figure 37 is the curve graph for indicating simulation result.
Figure 38 is the exploded perspective view of high-frequency signal circuit involved in variation 14.
Figure 39 is the exploded perspective view of high-frequency signal circuit involved in variation 15.
Figure 40 is the exploded perspective view of high-frequency signal circuit involved in variation 16.
Figure 41 is from figure obtained from the signal line and earth conductor of the high-frequency signal circuit of z-axis direction top view 40.
Figure 42 is the stereoscopic figure of high-frequency signal circuit involved in variation 17.
Figure 43 is the exploded perspective view of high-frequency signal circuit involved in variation 17.
Figure 44 is the equivalent circuit diagram of high-frequency signal circuit involved in variation 17.
Figure 45 is the exploded view of high-frequency signal circuit involved in variation 18.
Figure 46 is the exploded view of signal line documented by patent document 1.
In the following, referring to attached drawing, to high-frequency signal circuit involved in embodiments of the present invention and including the high-frequency signal The electronic equipment of route is illustrated.
(structure of high-frequency signal circuit)
In the following, being illustrated referring to attached drawing to the structure of high-frequency signal circuit involved in embodiments of the present invention 1. Fig. 1 is the stereoscopic figure of high-frequency signal circuit 10 involved in embodiment 1.Fig. 2 is the letter of high frequency involved in embodiment 1 The exploded view of number route 10.Fig. 3 is the cross section structure figure of high-frequency signal circuit 10 involved in embodiment 1.Fig. 4 is embodiment party The top view of high-frequency signal circuit 10 involved in formula 1.Fig. 5 is the section of high-frequency signal circuit 10 involved in embodiment 1 Structure chart.Fig. 5 (a) is the cross section structure figure at the A-A of Fig. 4.Fig. 5 (b) is the cross section structure figure at the B-B of Fig. 4.Fig. 5 (c) It is the cross section structure figure at the C-C of Fig. 4.In Fig. 1 into Fig. 5, the stacking direction of high-frequency signal circuit 10 is defined as z-axis side To.In addition, the longitudinal direction of high-frequency signal circuit 10 is defined as x-axis direction, the side of x-axis direction and z-axis direction will be orthogonal to To being defined as y-axis direction.
As shown in Figure 1 to Figure 3, high-frequency signal circuit 10 includes dielectric unit body (main body) 12, signal line S1, ground connection Conductor 22,24, connector 100a, 100b and via conductors B1~B4.
When overlooking from z-axis direction, dielectric unit body 12 extends along the x-axis direction, and includes line part 12a and interconnecting piece 12b,12c.As shown in Fig. 2, dielectric unit body 12 is from the positive direction side in z-axis direction to negative direction side by protective layer 14 and electricity The flexible laminated body that media sheet (insulator layer) 18 (18a~18c) stacks gradually to constitute.In the following, by dielectric unit body The interarea of the positive direction side in 12 z-axis direction is referred to as surface, by the interarea of the negative direction side in the z-axis direction of dielectric unit body 12 The referred to as back side.
Line part 12a extends along the x-axis direction.Interconnecting piece 12b is connected to the negative direction side of the x-axis direction of line part 12a End, and be in rectangle.Interconnecting piece 12c is connected to the end of the positive direction side of the x-axis direction of line part 12a, and is in rectangle.Connection The y-axis direction width of portion 12b, 12c are bigger than the y-axis direction width of line part 12a.
When overlooking from z-axis direction, dielectric sheet material 18 extends along the x-axis direction, and its shape and 12 phase of dielectric unit body Together.Dielectric sheet material 18 is made of the flexible thermoplastic resin such as polyimides, liquid crystal polymer.Dielectric sheet material Thickness after 18a, 18c stacking is, for example, 50 μm, and the thickness after dielectric sheet material 18b stacking is, for example, 150 μm.In the following, by electric The interarea of the positive direction side in the z-axis direction of media sheet 18 is referred to as surface, by the negative direction side in the z-axis direction of dielectric sheet material 18 Interarea be referred to as the back side.
In addition, dielectric sheet material 18a includes line part 18a-a and interconnecting piece 18a-b, 18a-c.Dielectric sheet material 18b Including line part 18b-a and interconnecting piece 18b-b, 18b-c.Dielectric sheet material 18c includes line part 18c-a and interconnecting piece 18c-b, 18c-c.Line part 12a is made of line part 18a-a, 18b-a, 18c-a.By interconnecting piece 18a-b, 18b-b, 18c-b constitute interconnecting piece 12b.Interconnecting piece 12c is made of interconnecting piece 18a-c, 18b-c, 18c-c.
As shown in Fig. 2, signal line S1 is the linear conductor being arranged in dielectric unit body 12, and prolong along the x-axis direction It stretches.Signal line S1 includes line part 20,21 and via conductors (interlayer connection conductor) b1, b2.
Line part 20,21 is arranged in the different layers (first layer and the second layer) of dielectric unit body 12.Specifically, line Road portion 20 is arranged on the surface (first layer) of dielectric sheet material 18a, and the surface of dielectric sheet material 18b is arranged in line part 21 On (second layer).
As shown in Figures 2 to 4, line part 20 be arranged on the surface of the line part 18a-a of dielectric sheet material 18a and The rectangle conductor being arranged at equal intervals in the direction of the x axis.Line part 21 is that the line part of dielectric sheet material 18b is arranged in The rectangle conductor being arranged at equal intervals on the surface of 18b-a and in the direction of the x axis.But line part 20 and line part 21 It is in staggered configuration in the direction of the x axis.Moreover, when being overlooked from z-axis direction, the positive direction side end of the x-axis direction of line part 20 and line The negative direction side end of the x-axis direction in road portion 21 overlaps.When being overlooked from z-axis direction, the negative direction of the x-axis direction of line part 20 Side end and the positive direction side end of the x-axis direction of line part 21 overlap.
In addition, the negative direction side end for being located at the x-axis direction of the line part 20 of the most negative direction side of x-axis direction is located at connection Portion's 18a-b face center.Equally, positioned at the positive direction side of the x-axis direction of the line part 20 of the most positive direction side of x-axis direction Portion is located at interconnecting piece 18a-c face center.Positioned at the negative direction of the x-axis direction of the line part 20 of the most negative direction side of x-axis direction Side end and positioned at x-axis direction most positive direction side line part 20 x-axis direction positive direction side end be, respectively, used as it is outer Portion's terminal.In the following, by the negative direction side end of the x-axis direction of the line part 20 for the most negative direction side for being located at x-axis direction and being located at x The positive direction side end of the x-axis direction of the line part 20 of the most positive direction side of axis direction is referred to as external terminal 16a, 16b.In outside Implement on the surface of terminal 16a, 16b gold-plated.
In addition, as shown in figure 4, y-axis direction width (line width) W1 of line part 20 than line part 21 y-axis direction width (line width) W2 is big.In addition, the x-axis direction length L1 of line part 20 is bigger than the x-axis direction length L2 of line part 21.Moreover, The length L1 of line part 20 and the length L2 of line part 21 are than the 1/2 of the wavelength of the high-frequency signal transmitted in signal line S1 It is small.Line part 20,21 as described above using silver, copper as the lesser metal material of the resistivity of principal component by being made.
Via conductors b1 runs through dielectric sheet material 18a along the z-axis direction, so that the surface of dielectric sheet material 18a and electricity are situated between The surface of matter sheet material 18b is connected.Moreover, the x-axis direction of the positive direction side end in the z-axis direction of via conductors b1 and line part 20 Positive direction side end be connected.The x-axis direction of the negative direction side end and line part 21 in the z-axis direction of via conductors b1 is born Direction side end is connected.
Via conductors b2 runs through dielectric sheet material 18a along the z-axis direction, so that the surface of dielectric sheet material 18a and electricity are situated between The surface of matter sheet material 18b is connected.Moreover, the x-axis direction of the positive direction side end in the z-axis direction of via conductors b2 and line part 20 Negative direction side end be connected.The x-axis direction of the negative direction side end in the z-axis direction of via conductors b2 and line part 21 is just Direction side end is connected.Via conductors b1, b2 using silver, copper as the lesser metal material of the resistivity of principal component by being made. In addition, the through hole that the inner peripheral surface for maying be used at through hole is formed with the conductor layers such as plated film comes instead through-holes conductor b1, b2.
As described above, line part 20,21 is alternately connected using via conductors b1, b2 in signal line S1.As a result, such as Fig. 3 Shown, when overlooking from y-axis direction, signal line S1 is in along the x-axis direction the sawtooth to advance while vibrating along the z-axis direction (zigzag) shape.
As shown in Figures 2 and 3, the dielectric sheet material equipped with line part 20 is arranged in earth conductor 22 (the first earth conductor) On the surface of 18a, when being overlooked from z-axis direction (normal direction of dielectric unit body 12), earth conductor 22 and multiple line parts 21 overlap, and do not overlap with multiple line parts 20.Earth conductor 22 is by lesser as the resistivity of principal component using silver, copper Metal material makes.In the following, earth conductor 22 is described in more detail.
As shown in Fig. 2, earth conductor 22 includes line part 22a and portion of terminal 22b, 22c.Line part 22a is arranged in route On the surface of portion 18a-a, and extend along the x-axis direction.But be provided on line part 22a arrange along the x-axis direction it is multiple Opening portion Op1.Earth conductor 22 is not provided in the Op1 of opening portion.But line part 20 is equipped in the Op1 of opening portion.As a result, Line part 20 in the state of insulating with earth conductor 22, be grounded conductor 22 and surrounded.When being overlooked as a result, from z-axis direction, connect Earthed conductor 22 does not overlap with line part 20.In addition, as shown in figure 4, the x-axis direction of opening portion Op1 is (along the side of line part 20 To) length L11 is bigger than the y-axis direction width W11 of opening portion Op1.
The bridge part Br1 extended along the y-axis direction is equipped between adjacent opening portion Op1 in the direction of the x axis.It is online as a result, In road portion 22a, opening portion Op1 and bridge part Br1 are alternately arranged in the direction of the x axis.As shown in Fig. 5 (a), overlooked from z-axis direction When, bridge part Br1 overlaps with line part 21.As shown in Figure 2 and Figure 4, line part 22a as described above is in ladder shape.
As shown in Fig. 2, portion of terminal 22b is arranged on the surface of interconnecting piece 18a-b, and in the square for surrounding external terminal 16a Shape frame.Portion of terminal 22b is connected to the negative direction side end of the x-axis direction of line part 22a.Portion of terminal 22c is arranged in interconnecting piece On the surface of 18a-c, and in the rectangle frame for surrounding external terminal 16b.Portion of terminal 22c is connected to the x-axis direction of line part 22a Positive direction side end.
As shown in Figures 2 and 3, the surface the (the 4th of dielectric sheet material 18c is arranged in earth conductor 24 (the second earth conductor) Layer) on, when being overlooked from z-axis direction (normal direction of dielectric unit body 12), as shown in Fig. 5 (a) to Fig. 5 (c), with multiple lines Road portion 20,21 overlaps.Earth conductor 24 using silver, copper as the lesser metal material of the resistivity of principal component by being made.In the following, Earth conductor 24 is described in more detail.
As shown in Fig. 2, earth conductor 24 includes line part 24a and portion of terminal 24b, 24c.Line part 24a is arranged in route On the surface of portion 18c-a, and extend along the x-axis direction.Line part 24a is the monolith shape conductor for being not provided with opening portion.As a result, from z When axis direction is overlooked, line part 24a overlaps with line part 20,21.
Portion of terminal 24b is arranged on the surface of interconnecting piece 18c-b, and in the rectangle in the center for surrounding interconnecting piece 18c-b Ring.Portion of terminal 24b is connected to the negative direction side end of the x-axis direction of line part 24a.
Portion of terminal 24c is arranged on the surface of interconnecting piece 18c-c, and in the rectangle in the center for surrounding interconnecting piece 18c-c Ring.Portion of terminal 24c is connected to the positive direction side end of the x-axis direction of line part 24a.
Via conductors B1 runs through the line part 18a-a of dielectric sheet material 18a along the z-axis direction, is more leaning on than signal line S1 Multiple via conductors B1 are provided at the positive direction side in y-axis direction, in the direction of the x axis in a manner of forming a line.Through-hole is led The positive direction side end in the z-axis direction of body B1 is connected to the positive direction side that y-axis direction is more leaned on than bridge part Br1 of line part 22a Part.
Via conductors B2 runs through the line part 18b-a of dielectric sheet material 18b along the z-axis direction, is more leaning on than signal line S1 Multiple via conductors B2 are provided at the positive direction side in y-axis direction, in the direction of the x axis in a manner of forming a line.Through-hole is led The negative direction side end in the z-axis direction of body B2 is connected to line part 24a.
As described above via conductors B1, B2 are connected to each other, to constitute 1 via conductors, and by earth conductor 22 It is connected with earth conductor 24.
Via conductors B3 runs through the line part 18a-a of dielectric sheet material 18a along the z-axis direction, is more leaning on than signal line S1 Multiple via conductors B3 are provided at the negative direction side in y-axis direction, in the direction of the x axis in a manner of forming a line.Through-hole is led The positive direction side end in the z-axis direction of body B3 is connected to the negative direction side that y-axis direction is more leaned on than bridge part Br1 of line part 22a Part.
Via conductors B4 runs through the line part 18b-a of dielectric sheet material 18b along the z-axis direction, is more leaning on than signal line S1 Multiple via conductors B4 are provided at the negative direction side in y-axis direction, in the direction of the x axis in a manner of forming a line.Through-hole is led The negative direction side end in the z-axis direction of body B4 is connected to line part 24a.
As described above via conductors B3, B4 are connected to each other, to constitute 1 via conductors, and by earth conductor 22 It is connected with earth conductor 24.
As shown in Fig. 5 (a) and Fig. 5 (b), as described above, in signal line S1 and earth conductor 22,24, earth conductor 22 Interval between line part 21 is smaller than the interval between earth conductor 24 and line part 21.Specifically, earth conductor 22 Interval between line part 21 is substantially equal to the thickness of dielectric sheet material 18a, and for example, 10 μm~100 μm.In this embodiment party In formula, between line part 21 and earth conductor 22 between be divided into 50 μm.On the other hand, between line part 21 and earth conductor 24 Interval is substantially equal to the thickness of dielectric sheet material 18b, and for example, 50 μm~300 μm.In the present embodiment, line part 21 with connect 150 μm are divided between earthed conductor 24.That is, by the thickness design of dielectric sheet material 18b at the thickness than dielectric sheet material 18a It is big.In addition, e.g., about 800 μm of the y-axis direction width of earth conductor 22,24.
The substantially whole surface of 14 covering dielectric sheet material 18a of protective layer.Protective layer 14 covers earth conductor 22 as a result,. Protective layer 14 is formed such as the flexible resin(a) as erosion resistant.
In addition, as shown in Fig. 2, protective layer 14 includes line part 14a and interconnecting piece 14b, 14c.Line part 14a covers route The whole surface of portion 18a-a, to cover line part 22a.
Interconnecting piece 14b is connected to the negative direction side end of the x-axis direction of line part 14a, and covers interconnecting piece 18a-b's Surface.Wherein, opening Ha~Hd is equipped in interconnecting piece 14b.The Ha that is open is the rectangle that the substantial middle of interconnecting piece 14b is arranged in Opening.External terminal 16a exposes via opening Ha to outside.In addition, opening Hb is the positive direction for being located at the y-axis direction of opening Ha The rectangular aperture of side.Opening Hc is the rectangular aperture for being located at the negative direction side of x-axis direction of opening Ha.The Hd that is open is to be located at opening The rectangular aperture of the negative direction side in the y-axis direction of Ha.Portion of terminal 22b exposes via opening Hb~Hd to outside, to play outer The function of portion's terminal.
Interconnecting piece 14c is connected to the positive direction side end of the x-axis direction of line part 14a, and covers interconnecting piece 18a-c's Surface.Wherein, opening He~Hh is equipped in interconnecting piece 14c.The He that is open is the rectangle that the substantial middle of interconnecting piece 14c is arranged in Opening.External terminal 16b exposes via opening He to outside.In addition, opening Hf is the positive direction for being located at the y-axis direction of opening He The rectangular aperture of side.Opening Hg is the rectangular aperture for being located at the positive direction side of x-axis direction of opening He.The Hh that is open is to be located at opening The rectangular aperture of the negative direction side in the y-axis direction of He.Portion of terminal 22c exposes via opening Hf~Hh to outside, to play outer The function of portion's terminal.
Connector 100a, 100b are separately mounted on the surface of interconnecting piece 12b, 12c, and be electrically connected to signal line S1 and Earth conductor 22,24.The structure of connector 100a, 100b are identical, therefore, enumerate carry out for the structure of connector 100b below Explanation.Fig. 6 is the stereoscopic figure and cross section structure figure of the connector 100b of high-frequency signal circuit 10.
As shown in Figure 1 and Figure 6, connector 100b includes connector body 102, external terminal 104,106, center conductor 108 and external conductor 110.Connector body 102 in the shape for being linked with cylinder on rectangular slab, and by the insulating materials such as resin Lai Production.
On the surface of the negative direction side in the z-axis direction of connector body 102, by external terminal 104 setting with outside At terminal 16b opposite position.On the surface of the negative direction side in the z-axis direction of connector body 102, by external terminal 106 It is arranged at position corresponding with the portion of terminal 22c exposed via opening Hf~Hh.
The cylinder center of connector body 102 is arranged in center conductor 108, and is connected with external terminal 104.It leads at center Body 108 is the signal terminal of input or output high-frequency signal.The cylinder inner circumferential of connector body 102 is arranged in external conductor 110 On face, and it is connected with external terminal 106.External conductor 110 is the ground terminal for maintaining earthing potential.
Connector 100b with structure as above is connected with external terminal 104 with external terminal 16b, external terminal 106 The mode being connected with portion of terminal 22c is mounted on the surface of interconnecting piece 12c.Signal line S1 and center conductor 108 as a result, Electrical connection.In addition, earth conductor 22,24 is electrically connected with external conductor 110.
In high-frequency signal circuit 10 with structure as above, the characteristic impedance Z1 of line part 20 and the characteristic resistance of line part 21 Anti- Z2 is different.More specifically, line part 20 is set in the opening portion Op1 of earth conductor 22, therefore, line part 20 and ground connection Capacitor is hardly formed between conductor 22.On the other hand, when overlooking from z-axis direction, line part 21 overlaps with earth conductor 22, Therefore, capacitor is formed between line part 21 and earth conductor 22.It is formed between line part 21 and earth conductor 22 as a result, The capacitor that capacity ratio is formed between line part 20 and earth conductor 22 is big.
In addition, line part 20 is arranged in than line part 21 further from the position of earth conductor 24.Therefore, in line part 21 The capacitor that the capacity ratio formed between earth conductor 24 is formed between line part 20 and earth conductor 24 is big.
The capacitance size ratio formed between line part 21 and earth conductor 22,24 as a result, is led in line part 20 with ground connection The capacitance size formed between body 22,24 is big.Therefore, characteristic impedance Z1 of the characteristic impedance Z2 of line part 21 than line part 20 Want low.Characteristic impedance Z1 is, for example, 70 Ω, and characteristic impedance Z2 is, for example, 30 Ω.In addition, the overall permanence impedance of signal line S1 For example, 50 Ω.
In addition, in high-frequency signal circuit 10, the characteristic impedance of the both ends signal line S1 (that is, external terminal 16a, 16b) The size of Z3 is between the characteristic impedance Z1 of line part 20 and the characteristic impedance Z2 of line part 21.
Come like that using high-frequency signal circuit 10 as demonstrated below.Fig. 7 is to overlook to use from y-axis direction and z-axis direction Scheme obtained from the electronic equipment 200 of high-frequency signal circuit 10.
Electronic equipment 200 includes high-frequency signal circuit 10, circuit substrate 202a, 202b, socket 204a, 204b, battery pack (metallic object) 206 and shell 210.
Shell 210 stores high-frequency signal circuit 10, circuit substrate 202a, 202b, socket 204a, 204b and battery pack 206.It is provided with such as transmitting line comprising antenna on circuit substrate 202a or receives circuit.It is arranged on circuit substrate 202b There is such as power supply circuit.Battery pack 206 is, for example, Li-Ion rechargeable battery, the knot covered with its surface by metal coating Structure.Circuit substrate 202a, battery pack 206 and circuit substrate 202b are arranged successively from the negative direction side of x-axis direction to positive direction side.
Socket 204a, 204b are separately positioned on the interarea of the negative direction side in the z-axis direction of circuit substrate 202a, 202b. Connector 100a, 100b are connected separately on socket 204a, 204b.As a result, via socket 204a, 204b, to connector 100a, The center conductor 108 of 100b is applied to the high frequency of transmission and such as frequency with 2GHz letter between circuit substrate 202a, 202b Number.In addition, being tieed up via circuit substrate 202a, 202b and socket 204a, 204b to the external conductor 110 of connector 100a, 100b Hold earthing potential.High-frequency signal circuit 10 will be attached between circuit substrate 202a, 202b as a result,.
In addition, as shown in fig. 7, the surface (more precisely, protective layer 14) of dielectric unit body 12 and 206 phase of battery pack Contact.Moreover, dielectric unit body 12 is fixed with battery pack 206 by bonding agent etc..
(manufacturing method of high-frequency signal circuit)
In the following, being illustrated referring to Fig. 2 to the manufacturing method of high-frequency signal circuit 10.In the following, with 1 high frequency letter of production It is illustrated for the situation of number route 10, but in fact, by stacking and large-scale dielectric sheet material is cut, to make simultaneously Multiple high-frequency signal circuits 10.
Firstly, preparing dielectric sheet material 18, which is formed by thermoplastic resin and in its whole surface On be formed with copper foil.Implemented by the copper foil surface to dielectric sheet material 18 for example for the zinc-plated of antirust, to be smoothed. Copper thickness is 10 μm~20 μm.
Then, using photo-mask process, line part 20 shown in Fig. 2 is formed on the surface of dielectric sheet material 18a and ground connection is led Body 22.Specifically, printing line part 20 and earth conductor 22 shown in its shape and Fig. 2 on the copper foil of dielectric sheet material 18a Identical resist.Then, etching process is implemented to copper foil, so that the copper foil for the part not being covered by resist be removed.This Afterwards, resist is removed.To form line part 20 and earth conductor as shown in Figure 2 on the surface of dielectric sheet material 18a 22。
Then, using photo-mask process, line part 21 shown in Fig. 2 is formed on the surface of dielectric sheet material 18b.Utilize photoetching Process forms earth conductor 24 shown in Fig. 2 on the surface of dielectric sheet material 18c.In addition, photo-mask process and formation line herein Photo-mask process when road portion 20 and earth conductor 22 is identical, therefore the description thereof will be omitted.
Then, the position that via conductors B1~B4, b1, b2 are formed in dielectric sheet material 18a, 18b is shone from back side Laser beam is penetrated, to form through hole.Hereafter, conductive paste is filled into passing through of being formed in dielectric sheet material 18a, 18b In perforation.
Then, it is stacked gradually from the positive direction side in z-axis direction to negative direction side by dielectric sheet material 18a~18c.Then, Heat and pressure are applied to dielectric sheet material 18a~18c from the positive direction side and negative direction side in z-axis direction, thus by dielectric Sheet material 18a~18c softens and crimps to form integration, also, conductive paste of the filling into through hole is solidified, and forms figure Via conductors B1~B4 shown in 2, b1, b2.In addition, thermo-compression bonding can be replaced each dielectric using bonding agents such as epoxylites Sheet material 18 carries out integration.In addition, via conductors B1~B4, b1, b2 are not necessarily required to be fully filled with conductor and be run through Hole, such as via conductors can be formed by only forming conductor along through hole inner peripheral surface.
Finally, by coating resin (resist) thickener, to form protective layer 14 on dielectric sheet material 18a.
According to the high-frequency signal circuit 10 with the above structure, low-frequency noise can be inhibited to generate.More specifically, in patent In signal line 500 documented by document 1, in the characteristic impedance and line part 542 of the signal wire 532 in end 540a, 540b Signal wire 532 characteristic impedance it is different.Therefore, the reflection of high-frequency signal is generated in end 540a, 540b.It generates as a result, Using the distance between end 540a, 540b as the low frequency standing wave of 1/2 wavelength.As a result, being given off from signal line 500 low Frequency noise.
On the other hand, in high-frequency signal circuit 10, signal is constituted by alternately connection line portion 20 and line part 21 Route S1.Line part 20 is arranged in the opening portion Op1 of earth conductor 22, therefore, not opposite with earth conductor 22.Another party Face, line part 21 and earth conductor 22 are opposite.Therefore, the capacity ratio formed between line part 20 and earth conductor 22 is in route The capacitor formed between portion 21 and earth conductor 22 wants small.The characteristic of the characteristic impedance Z1 of line part 20 and line part 21 as a result, Impedance Z 2 is different.Specifically, characteristic impedance Z1 ratio characteristic impedance Z 2 wants high.The characteristic impedance of signal line S1 is in spy as a result, Cyclical movement between property impedance Z 1 and characteristic impedance Z2.As a result, in signal line S1, in line part 20 and line part Short wavelength (i.e. high frequency) standing wave is generated in 21.On the other hand, it is difficult to generate long wavelength between external electrode 16a, 16b (i.e. low Frequently standing wave).As above, in high-frequency signal circuit 10, the generation of low-frequency noise can be inhibited.
In addition, generating high frequency because of the standing wave generated in line part 20 and line part 21 in high-frequency signal circuit 10 Noise.By the way that the length L2 of the length L1 of line part 20 and line part 21 are designed sufficiently short, so as to which noise frequency is set Except the fixed frequency band at the high-frequency signal transmitted in signal line S1.For this purpose, making the length L1 and line part of line part 20 21 length L2 is shorter than the half of the wavelength of the high-frequency signal transmitted in signal line S1.
When overlooking signal line S1 from the positive direction side in z-axis direction, it can be seen that the line part 20 of strip.The line of strip When the electrical length in road portion 20 is the half of the wavelength of the high-frequency signal transmitted in signal line S1, line part 20 gives off electromagnetism Wave.Half of the electrical length of line part 20 preferably than the wavelength of the high-frequency signal transmitted in signal line S1 is short as a result, if For 1/8 hereinafter, then can more effectively inhibit the leakage of high-frequency signal.
In addition, reason described below is also based on, so that the characteristic impedance Z1 of line part 20 in high-frequency signal circuit 10 It is different with the characteristic impedance Z2 of line part 21.More specifically, the setting of line part 20 than line part 21 further from earth conductor At 24 position.Therefore, the capacity ratio formed between line part 20 and earth conductor 24 is in line part 21 and earth conductor 24 Between the capacitor that is formed want small.The characteristic impedance Z1 of line part 20 is different with the characteristic impedance Z2 of line part 21 as a result,.It is specific and Speech, characteristic impedance Z1 ratio characteristic impedance Z 2 want high.
In addition, in high-frequency signal circuit 10, the spy of the size of the characteristic impedance at the both ends signal line S1 in line part 20 Between property impedance Z 1 and the characteristic impedance Z2 of line part 21.As a result, in signal line S1, hold in line part 20 and line part 21 It is also easy to produce the standing wave of short wavelength, is difficult to generate the standing wave of long wavelength between the both ends of signal line S1.As a result, in high frequency In signal line 10, more effectively inhibit the generation of low-frequency noise.
In addition, in high-frequency signal circuit 10, by adjusting the width G in the gap between line part 20 and earth conductor 22 (referring to Fig. 2 and Fig. 4), so as to adjust the size of the capacitor formed between line part 20 and earth conductor 22.Specifically, If the width G in the gap between line part 20 and earth conductor 22 reduces, formed between line part 20 and earth conductor 22 Capacitor increase.On the other hand, if the width G in the gap between line part 20 and earth conductor 22 increases, in line part 20 The capacitor formed between earth conductor 22 reduces.
In addition, in high-frequency signal circuit 10, by the width for reducing the gap between line part 20 and earth conductor 22 G is absorbed so that being easily grounded conductor 22 from the power line that line part 20 comes out.As a result, can inhibit from 20 spoke of line part Penetrate noise.
In addition, without reducing the characteristic impedance Z1 of line part 20, can try hard to reduce signal in high-frequency signal circuit 10 The alternating-current resistance of route S1.More specifically, in order to reduce the alternating-current resistance of signal line S1, it is contemplated that increase signal line S1 Line width.However, if the line width W2 of line part 21 increases, the capacitor that is formed between line part 21 and earth conductor 22,24 Increase.Therefore, the characteristic impedance Z2 of line part 21 will become too small.
Therefore, in high-frequency signal circuit 10, so that the line width W1 of line part 20 bigger than the line width W2 of line part 21.Line Road portion 20 is arranged in than line part 21 further from the position of earth conductor 24, and not opposite with earth conductor 22.Exist as a result, The capacitor formed between line part 20 and earth conductor 22,24 is smaller.Therefore, even if the line width W1 of line part 20 increases, online The incrementss of the capacitor formed between road portion 20 and earth conductor 22,24 are also small.As a result, in high-frequency signal circuit In 10, without reducing the characteristic impedance Z1 of line part 20, the alternating-current resistance for reducing signal line S1 can be tried hard to.
In addition, in high-frequency signal circuit 10, it is as demonstrated below such, it can try hard to make 10 thinning of high-frequency signal circuit.More Specifically, when overlooking from z-axis direction, the opening portion Op1 Chong Die with line part 20 is provided on earth conductor 22.As a result, Line part 20 is not opposite with earth conductor 22.Therefore, smaller capacitive is only formed between line part 20 and earth conductor 22.Cause And line part 20 can be made in the state that the characteristic impedance Z1 of line part 20 is maintained predetermined characteristic impedance (such as 70 Ω) It is close with earth conductor 22.In the present embodiment, line part 20 and earth conductor 22 are arranged in same dielectric sheet material 18a On.As a result, can try hard to make 10 thinning of high-frequency signal circuit.If realizing the thinning of high-frequency signal circuit 10, can be easy It is bent high-frequency signal circuit 10.
In addition, in high-frequency signal circuit 10, by making the x-axis direction line width W21 of bridge part Br1 attenuate, without The characteristic impedance Z2 for reducing line part 21 can try hard to reduce the alternating-current resistance of signal line S1.More specifically, if increasing line The line width W2 in road portion 21, then the alternating-current resistance of signal line S1 reduces.However, the characteristic impedance Z2 of line part 21 depends on signal The size of relative area (facing area) between route S1 and bridge part Br1.Specifically, if signal line S1 and bridge Relative area between socket part Br1 increases, then the capacitor formed between signal line S1 and bridge part Br1 increases, therefore, special Property impedance Z 2 will become too small.Therefore, on one side reduce bridge part Br1 line width W21, while increase the line width W2 of line part 21 i.e. It can.As a result, without changing the capacitor formed between signal line S1 and bridge part Br1, can try hard to reduce signal line S1 Alternating-current resistance.
In addition, magnetic flux can be inhibited to leak from high-frequency signal circuit 10 according to high-frequency signal circuit 10.More specifically, if Electric current i1 (referring to Fig. 4) is flowed through in line part 20, then generates so that line part 20 is center axis the magnetic flux for surrounding line part 20.If Outside such flux leakage to high-frequency signal circuit 10, then the signal wire of other circuits is possible to form magnetic field coupling with line part 20 It closes.As a result, in high-frequency signal circuit 10, it is difficult to obtain desired characteristic.
Therefore, in high-frequency signal circuit 10, line part 20 is arranged in the opening portion Op1 of earth conductor 22.As a result, So that line part 20 and earth conductor 22 are close.If flowing through electric current i1 in line part 20, flowed through in earth conductor 22 and the electricity Flow the reversed feedback current i2 of i1.The magnetic flux around direction and earth conductor 22 of magnetic flux around line part 20 as a result, Around contrary.In this case, in the gap between line part 20 and earth conductor 22, magnetic flux is mutually reinforcing, with this Relatively, in the region of the positive direction side and negative direction side of more leaning on y-axis direction than earth conductor 22 (that is, outside high-frequency signal circuit 10 Region) in, magnetic flux offsets each other.As a result, can inhibit except flux leakage to high-frequency signal circuit 10.
In addition, being also based on following reason in high-frequency signal circuit 10, capable of trying hard to reduce alternating-current resistance.More specifically, In earth conductor 22, the part of y-axis direction positive direction side is more being leaned on than opening portion Op1 and is more leaning on y-axis than opening portion Op1 Feedback current is flowed through in the part of direction negative direction side.Therefore, from the viewpoint of reducing alternating-current resistance, it is desirable to earth conductor 22 In, the resistance value of the part of more leaning on than opening portion Op1 y-axis direction positive direction side and y-axis direction is more leaned on than opening portion Op1 The resistance value of the part of negative direction side is lower.
Therefore, in high-frequency signal circuit 10, the width W11 of opening portion Op1 is smaller than the length L11 of opening portion Op1.By This more leans on the width of the part of y-axis direction positive direction side than opening portion Op1 and than opening portion Op1 in earth conductor 22 Width more by the part of y-axis direction negative direction side increases.As a result, more depending on y than opening portion Op1 in earth conductor 22 The resistance value of the part of axis direction positive direction side and more leaned on than opening portion Op1 y-axis direction negative direction side part resistance value It reduces.
In the following, being illustrated referring to attached drawing to high-frequency signal circuit 10a involved in variation 1.Fig. 8 is 1 institute of variation The top view for the high-frequency signal circuit 10a being related to.
The difference is that the shape and opening of line part 20 between high-frequency signal circuit 10a and high-frequency signal circuit 10 The shape of portion Op1.More specifically, it in high-frequency signal circuit 10a, is equipped near the both ends of the x-axis direction of line part 20 Taper, so that line width is gradually reduced.The line width ratio for the line part 20 in part that line part 20 is connected with line part 21 as a result, The line width of the central portion of the x-axis direction of line part 20 wants small.
In addition, taper is equipped near the both ends of the x-axis direction of opening portion Op1, so that the width in y-axis direction gradually subtracts It is small.Opening portion Op1 becomes the shape for imitating line part 20 as a result,.
In the high-frequency signal circuit 10a with the above structure, it can inhibit to generate between line part 20 and line part 21 The reflection of high-frequency signal.More specifically, it is equipped with taper near the both ends of the x-axis direction of line part 20, so that line width is gradually Reduce.Generate electrostatic capacitance between the central portion and earth conductor 22 of the x-axis direction of line part 20 as a result, but line part 20 The both ends of x-axis direction be connected to line part 21 via via conductors b1, b2.Line part 21 and earth conductor 22 are opposite, therefore, With strong C (capacitor) property.L (inductance) property enhances in the central portion of the x-axis direction of line part 20 as a result, in the x of line part 20 The both ends vicinity C of axis direction enhances.As a result, the characteristic impedance near the both ends of the x-axis direction of line part 20 becomes Characteristic impedance than the center of the x-axis direction of line part 20 is low, and than the characteristic impedance Z2 high of line part 21.As a result, Can inhibit that large variation occurs in the characteristic impedance of line part 20 Yu the coupling part of line part 21.It can inhibit in route as a result, The reflection of high-frequency signal is generated between portion 20 and line part 21.
Present inventor has made the model of high-frequency signal circuit 10a, and has studied height using Computer Simulation Frequency signal line 10a's passes through characteristic and reflection characteristic.In the following, being illustrated to the condition for emulating used model.
The width G in gap: 200 μm
W21:100 μm of the line width of bridge part Br1
The length L11:3mm of opening portion Op1
W11:850 μm of the width of opening portion Op1
W1:450 μm of the line width of line part 20
W2:200 μm of the line width of line part 21
Interval between line part 21 and earth conductor 22: 50 μm
Interval between line part 21 and earth conductor 24: 150 μm
The entire length of high-frequency signal circuit 10a: 60mm
Fig. 9 is the curve graph for indicating simulation result.The longitudinal axis indicates that attenuation, horizontal axis indicate frequency.As can be seen from FIG. 9, exist In high-frequency signal circuit 10a, the high-frequency signal of 2GHz is -0.3dB or so by characteristic.To high-frequency signal circuit 10a By characteristic be identical size general three stratotypes high-frequency signal circuit by about 1/3 or so of characteristic.
In addition, according to Fig. 9, in high-frequency signal circuit 10a, the reflection characteristic of the high-frequency signal of 1GHz~5GHz is- 30dB or less.It follows that can inhibit in broad frequency band, the variation of characteristic impedance in high-frequency signal circuit 10a.Specifically For, for the high-frequency signal of 1GHz~5GHz, the characteristic impedance of high-frequency signal circuit 10a is ± 2.5 Ω of 50 Ω or so.
In the following, being illustrated referring to attached drawing to high-frequency signal circuit 10b involved in variation 2.Figure 10 is variation 2 The exploded view of related high-frequency signal circuit 10b.
As shown in high-frequency signal circuit 10b, multiple signal line S1, S2 can be equipped with.In high-frequency signal circuit 10b, with The opposite earth conductor 24 of signal line S1 and the earth conductor 24 ' opposite with signal line S2 can be as shown in Figure 10 It is made of a conductor layer.
On the other hand, the earth conductor 22 opposite with signal line S1 and the earth conductor opposite with signal line S2 22 ' are preferably not connected to each other.The isolation characteristic between signal line S1 and signal line S2 is improved as a result,.
In the following, being illustrated referring to attached drawing to high-frequency signal circuit 10c involved in variation 3.Figure 11 is variation 3 The exploded view of related high-frequency signal circuit 10c.
Between the high-frequency signal circuit 10c and high-frequency signal circuit 10 the difference is that position of line part 21.In height In frequency signal line 10, line part 21 is arranged to more lean on the negative direction side in z-axis direction than line part 20, but in high-frequency signal circuit In 10c, line part 21 is arranged to more lean on the positive direction side in z-axis direction than line part 20.In the following, being with related difference Center is illustrated the structure of high-frequency signal circuit 10c.
In high-frequency signal circuit 10c, in a manner of being arranged successively from the positive direction side in z-axis direction to negative direction side Layered dielectric sheet material 18d, 18a, 18b, 18c, to constitute dielectric unit body 12.
The different layers of dielectric unit body 12 are arranged in line part 20,21.Specifically, line part 20 is arranged in dielectric On the surface (first layer) of sheet material 18a, line part 21 is arranged on the surface (second layer) of dielectric sheet material 18d.
In addition, via conductors b1, b2 run through dielectric sheet material 18d along the z-axis direction respectively.Via conductors b1 is by line part 20 The positive direction side end of x-axis direction be connected with the negative direction side end of the x-axis direction of line part 21.Via conductors b2 is by line The negative direction side end of the x-axis direction in road portion 20 is connected with the positive direction side end of the x-axis direction of line part 21.
In addition, external terminal 16a is arranged on the portion of terminal 18d-b of dielectric sheet material 18d.External terminal 16a is via logical Hole conductor b13 is connected with the line part 20 for the most negative direction side for being located at x-axis direction.
In addition, external terminal 16b is arranged on the portion of terminal 18d-c of dielectric sheet material 18d.External terminal 16b is via logical Hole conductor b14 is connected with the line part 20 for the most positive direction side for being located at x-axis direction.
Earth conductor 22 is arranged on the surface of dielectric sheet material 18a, when being overlooked from z-axis direction, earth conductor 22 and line Road portion 21 overlaps.
Earth conductor 24 is arranged on the surface of dielectric sheet material 18c, when being overlooked from z-axis direction, earth conductor 24 and line Road portion 20,21 overlaps.
Identically as high-frequency signal circuit 10, the high-frequency signal circuit 10c with the above structure can also make line part 20 Characteristic impedance Z1 is different with the characteristic impedance Z2 of line part 21.In addition, can be characteristic impedance in high-frequency signal circuit 10c Z1 ratio characteristic impedance Z 2 is big, and it is big to be also possible to characteristic impedance Z2 ratio characteristic impedance Z 1.
In the following, being illustrated referring to attached drawing to the structure of high-frequency signal circuit involved in embodiments of the present invention 2. Figure 12 is the exploded view of high-frequency signal circuit 10d involved in embodiment 2.In Figure 12, arrangement shows dielectric sheet material The surface and the back side of 18a.Figure 13 is the cross section structure figure of high-frequency signal circuit 10d involved in embodiment 2.Figure 14 is to implement The top view of high-frequency signal circuit 10d involved in mode 2.Figure 15 is high-frequency signal circuit 10d involved in embodiment 2 Cross section structure figure.Figure 15 (a) is the cross section structure figure at the A-A of Figure 14.Figure 15 (b) is the cross section structure at the B-B of Figure 14 Figure.Figure 15 (c) is the cross section structure figure at the C-C of Figure 14.In Figure 12 into Figure 15, by the stacking side of high-frequency signal circuit 10d To being defined as z-axis direction.In addition, the longitudinal direction of high-frequency signal circuit 10d is defined as x-axis direction, x-axis direction will be orthogonal to And the direction definition in z-axis direction is y-axis direction.For the stereoscopic figure of high-frequency signal circuit 10d, Fig. 1 is quoted.
As shown in Figure 12 to Figure 15, high-frequency signal circuit 10d include dielectric unit body (main body) 12, signal line S1, Earth conductor 22,25, connector 100a, 100b and via conductors B21, B22.
When overlooking from z-axis direction, dielectric unit body 12 extends along the x-axis direction, and includes line part 12a and interconnecting piece 12b,12c.As shown in figure 12, dielectric unit body 12 is from the positive direction side in z-axis direction to negative direction side by protective layer 14, electricity The flexible laminated body that media sheet (insulator layer) 18a and protective layer 15 stack gradually to constitute.In the following, by dielectric unit body The interarea of the positive direction side in 12 z-axis direction is referred to as surface, by the interarea of the negative direction side in the z-axis direction of dielectric unit body 12 The referred to as back side.
When overlooking from z-axis direction, dielectric sheet material 18a extends along the x-axis direction, and its shape and 12 phase of dielectric unit body Together.Dielectric sheet material 18a is made of the flexible thermoplastic resin such as polyimides, liquid crystal polymer.Dielectric piece Thickness after material 18a stacking is, for example, 50 μm~500 μm, is in the present embodiment 150 μm.In the following, by dielectric sheet material 18a The interarea of positive direction side in z-axis direction be referred to as surface, the interarea of the negative direction side in the z-axis direction of dielectric sheet material 18a is claimed Make the back side.
In addition, dielectric sheet material 18a includes line part 18a-a and interconnecting piece 18a-b, 18a-c.Line part 18a-a Constitute line part 12a.Interconnecting piece 18a-b constitutes interconnecting piece 12b.Interconnecting piece 18a-c constitutes interconnecting piece 12c.
As shown in figure 12, signal line S1 is the linear conductor being arranged in dielectric unit body 12, and is prolonged along the x-axis direction It stretches.Signal line S1 includes line part 20,21 and via conductors (interlayer connection conductor) b1, b2.
The different layers of dielectric unit body 12 are arranged in line part 20,21.Specifically, line part 20 is arranged in dielectric On the surface (first layer) of sheet material 18a, line part 21 is arranged on the back side (second layer) of dielectric sheet material 18a.
As shown in Figure 12 to Figure 14, line part 20 be arranged on the surface of the line part 18a-a of dielectric sheet material 18a, And the rectangle conductor being arranged at equal intervals in the direction of the x axis.Line part 21 is that the line part of dielectric sheet material 18a is arranged in The rectangle conductor being arranged at equal intervals on the back side of 18a-a and in the direction of the x axis.But line part 20 and line part 21 It is in staggered configuration in the direction of the x axis.Moreover, when being overlooked from z-axis direction, the positive direction side end of the x-axis direction of line part 20 and line The negative direction side end of the x-axis direction in road portion 21 overlaps.When being overlooked from z-axis direction, the negative direction of the x-axis direction of line part 20 Side end and the positive direction side end of the x-axis direction of line part 21 overlap.
In addition, as shown in figure 14, the y-axis direction width of y-axis direction width (line width) W1 of line part 20 than line part 21 (line width) W2 is big.In addition, the x-axis direction length L1 of line part 20 is bigger than the x-axis direction length L2 of line part 21.Moreover, The length L1 of line part 20 and the length L2 of line part 21 are than the 1/2 of the wavelength of the high-frequency signal transmitted in signal line S1 It is short.Line part 20,21 as described above using silver, copper as the lesser metal material of the resistivity of principal component by being made.
Via conductors b1 runs through dielectric sheet material 18a along the z-axis direction, so that the surface of dielectric sheet material 18a and electricity are situated between The back side of matter sheet material 18a is connected.Moreover, the x-axis direction of the positive direction side end in the z-axis direction of via conductors b1 and line part 20 Positive direction side end be connected.The x-axis direction of the negative direction side end and line part 21 in the z-axis direction of via conductors b1 is born Direction side end is connected.
Via conductors b2 runs through dielectric sheet material 18a along the z-axis direction, so that the surface of dielectric sheet material 18a and electricity are situated between The back side of matter sheet material 18a is connected.Moreover, the x-axis direction of the positive direction side end in the z-axis direction of via conductors b2 and line part 20 Negative direction side end be connected.The x-axis direction of the negative direction side end in the z-axis direction of via conductors b2 and line part 21 is just Direction side end is connected.Via conductors b1, b2 using silver, copper as the lesser metal material of the resistivity of principal component by being made. In addition, the through hole that the inner peripheral surface for maying be used at through hole is formed with the conductor layers such as coating comes instead through-holes conductor b1, b2.
As described above, line part 20,21 is alternately connected using via conductors b1, b2 in signal line S1.As a result, as schemed Shown in 13, when overlooking from y-axis direction, signal line S1 is in along the x-axis direction the sawtooth to advance while vibrating along the z-axis direction Shape.
As shown in FIG. 12 and 13, the dielectric piece equipped with line part 20 is arranged in earth conductor 22 (the first earth conductor) On the surface of material 18a, when being overlooked from z-axis direction (normal direction of dielectric unit body 12), earth conductor 22 and multiple routes Portion 21 overlaps, and does not overlap with multiple line parts 20.Earth conductor 22 is by smaller as the resistivity of principal component using silver, copper Metal material make.In the following, earth conductor 22 is described in more detail.
As shown in figure 12, earth conductor 22 includes line part 22a and portion of terminal 22b, 22c.Line part 22a is arranged in route On the surface of portion 18a-a, and extend along the x-axis direction.But be provided on line part 22a arrange along the x-axis direction it is multiple Opening portion Op1.Earth conductor 22 is not provided in the Op1 of opening portion.But line part 20 is equipped in the Op1 of opening portion.As a result, Line part 20 in the state of insulating with earth conductor 22, be grounded conductor 22 and surrounded.When being overlooked as a result, from z-axis direction, connect Earthed conductor 22 does not overlap with line part 20.In addition, as shown in figure 14, the x-axis direction of opening portion Op1 is (along the side of line part 20 To) length L11 is bigger than the y-axis direction width W11 of opening portion Op1.
The bridge part Br1 extended along the y-axis direction is equipped between adjacent opening portion Op1 in the direction of the x axis.It is online as a result, In road portion 22a, opening portion Op1 and bridge part Br1 are alternately arranged in the direction of the x axis.As shown in Figure 15 (a), overlooked from z-axis direction When, bridge part Br1 overlaps with line part 21.As shown in figures 12 and 14, line part 22a as described above is in ladder shape.
As shown in figure 12, portion of terminal 22b is arranged on the surface of interconnecting piece 18a-b, and in encirclement external terminal 16a's Rectangle frame.Interconnecting piece 22b is connected to the negative direction side end of the x-axis direction of line part 22a.Portion of terminal 22c is arranged in interconnecting piece On the surface of 18a-c, and in the rectangle frame for surrounding external terminal 16b.Portion of terminal 22c is connected to the x-axis direction of line part 22a Positive direction side end.
As shown in FIG. 12 and 13, the dielectric piece equipped with line part 20 is arranged in earth conductor 25 (the second earth conductor) On the back side of material 18a, when being overlooked from z-axis direction (normal direction of dielectric unit body 12), earth conductor 25 and multiple routes Portion 21 overlaps, and does not overlap with multiple line parts 20.Earth conductor 25 is by smaller as the resistivity of principal component using silver, copper Metal material make.In the following, earth conductor 25 is described in more detail.
As shown in figure 12, earth conductor 25 includes line part 25a and portion of terminal 25b, 25c.Line part 25a is arranged in route On the back side of portion 18a-a, and extend along the x-axis direction.But be provided on line part 25a arrange along the x-axis direction it is multiple Opening portion Op2.Earth conductor 25 is not provided in the Op2 of opening portion.But line part 21 is equipped in the Op2 of opening portion.As a result, Line part 21 in the state of insulating with earth conductor 25, be grounded conductor 25 and surrounded.When being overlooked as a result, from z-axis direction, connect Earthed conductor 25 does not overlap with line part 21.In addition, as shown in figure 14, the x-axis direction of opening portion Op2 is (along the side of line part 21 To) length L31 is bigger than the y-axis direction width W31 of opening portion Op2.
The bridge part Br2 extended along the y-axis direction is equipped between adjacent opening portion Op2 in the direction of the x axis.It is online as a result, In road portion 25a, opening portion Op2 and bridge part Br2 are alternately arranged in the direction of the x axis.As shown in Figure 15 (c), overlooked from z-axis direction When, bridge part Br2 overlaps with line part 20.As shown in figures 12 and 14, line part 25a as described above is in ladder shape.
Portion of terminal 25b is arranged on the back side of interconnecting piece 18a-b, and in the rectangle in the center for surrounding interconnecting piece 18a-b Ring.Portion of terminal 25b is connected to the negative direction side end of the x-axis direction of line part 25a.
Portion of terminal 25c is arranged on the surface of interconnecting piece 18a-c, and in the rectangle in the center for surrounding interconnecting piece 18a-c Ring.Portion of terminal 25c is connected to the positive direction side end of the x-axis direction of line part 25a.
Via conductors B21 runs through the line part 18a-a of dielectric sheet material 18a along the z-axis direction, more than signal line S1 At the positive direction side of y-axis direction, multiple via conductors B21 are provided in a manner of forming a line in the direction of the x axis.Through-hole is led The positive direction side end in the z-axis direction of body B1 is connected to the positive direction side that y-axis direction is more leaned on than bridge part Br1 of line part 22a Part.The negative direction side end in the z-axis direction of via conductors B1 is connected to line part 25a.
Via conductors B22 runs through the line part 18a-a of dielectric sheet material 18a along the z-axis direction, more than signal line S1 At the negative direction side of y-axis direction, multiple via conductors B22 are provided in a manner of forming a line in the direction of the x axis.Through-hole is led The positive direction side end in the z-axis direction of body B3 is connected to the negative direction side that y-axis direction is more leaned on than bridge part Br1 of line part 22a Part.The negative direction side end in the z-axis direction of via conductors B22 is connected to line part 25a.
In addition, as shown in figure 12, protective layer 14 includes line part 14a and interconnecting piece 14b, 14c.Line part 14a covers line The whole surface of road portion 18a-a, to cover line part 22a.
The 15 substantially entire back side covering dielectric sheet material 18a of protective layer.Protective layer 15 covers earth conductor 25 as a result,.It protects Sheath 15 is formed such as the flexible resin(a) as erosion resistant.
In addition, as shown in figure 12, protective layer 15 includes line part 15a and interconnecting piece 15b, 15c.Line part 15a covers line The entire back side of road portion 18a-a, to cover line part 25a.Interconnecting piece 15b is connected to the negative of the x-axis direction of line part 15a Direction side end, and cover the back side of interconnecting piece 18a-b.Interconnecting piece 15c is connected to the positive direction of the x-axis direction of line part 15a Side end, and cover the back side of interconnecting piece 18a-c.
The connector 100a of the structure of connector 100a, 100b of high-frequency signal circuit 10d and high-frequency signal circuit 10, The structure of 100b is identical, therefore the description thereof will be omitted.
In high-frequency signal circuit 10d with structure as above, the characteristic impedance Z1 of line part 20 and the characteristic of line part 21 Impedance Z 2 is different.More specifically, the line width W1 of line part 20 is bigger than the line width W2 of line part 21.Thus, line part 20 with The opposite area ratio line part 21 of earth conductor 25 area opposite with earth conductor 22 is big.As a result, line part 20 with connect The capacitor that the capacity ratio formed between earthed conductor 25 is formed between line part 21 and earth conductor 22 is big.Line part as a result, 20 C (capacitor) property is eager to excel than line part 21.
Moreover, the inductance value of line part 21 compares route if the line width W2 of line part 21 is smaller than the line width W1 of line part 20 The inductance value in portion 20 is big.L (inductance) property of line part 21 is eager to excel than line part 20 as a result,.
As described above, the characteristic impedance Z1 of line part 20 is lower than the characteristic impedance Z2 of line part 21.Characteristic impedance Z2 For example 70 Ω, characteristic impedance Z1 are, for example, 30 Ω.In addition, the overall permanence impedance of signal line S1 is, for example, 50 Ω.
In addition, in high-frequency signal circuit 10d, the characteristic impedance of the both ends signal line S1 (that is, external terminal 16a, 16b) The size of Z3 is between the characteristic impedance Z1 of line part 20 and the characteristic impedance Z2 of line part 21.
According to the high-frequency signal circuit 10d with the above structure, low frequency can be inhibited to make an uproar in the same manner as high-frequency signal circuit 10 The generation of sound.
In addition, generating high frequency because of the standing wave generated in line part 20 and line part 21 in high-frequency signal circuit 10d Noise.By the way that the length L2 of the length L1 of line part 20 and line part 21 are designed sufficiently short, so as to which noise frequency is set Except the fixed frequency band at the high-frequency signal transmitted in signal line S1.For this purpose, making the length L1 and line part of line part 20 21 length L2 is shorter than the half of the wavelength of the high-frequency signal transmitted in signal line S1.
In addition, in high-frequency signal circuit 10d, it is as demonstrated below such, it can try hard to make high-frequency signal circuit 10d thinning. More specifically, when overlooking from z-axis direction, the opening portion Op1 Chong Die with line part 20 is provided on earth conductor 22.By This, line part 20 is not opposite with earth conductor 22.Therefore, smaller capacitive is only formed between line part 20 and earth conductor 22. Even if the z-axis direction distance as a result, between line part 20 and earth conductor 22 has variation, between line part 20 and earth conductor 22 Capacitor hardly change.Thus, the characteristic impedance Z1 of line part 20 can maintained predetermined characteristic impedance (such as 30 Ω) In the state of, keep line part 20 and earth conductor 22 close.
In addition, being provided with the opening portion Op2 Chong Die with line part 21 on earth conductor 25 when overlooking from z-axis direction.By This, line part 21 is not opposite with earth conductor 25.Therefore, smaller capacitive is only formed between line part 21 and earth conductor 25. Even if the z-axis direction distance as a result, between line part 21 and earth conductor 25 has variation, between line part 20 and earth conductor 22 Capacitor hardly change.Thus, the characteristic impedance Z2 of line part 21 can maintained predetermined characteristic impedance (such as 70 Ω) In the state of, keep line part 21 and earth conductor 25 close.It can try hard to make high-frequency signal circuit 10d thinning as a result,.If realizing The thinning of high-frequency signal circuit 10d can then be easily bent high-frequency signal circuit 10d.
In addition, dielectric sheet material 18a is only 1 used in dielectric unit body 12 in high-frequency signal circuit 10d Layer.As a result, compared with high-frequency signal circuit 10, further thinning is realized in high-frequency signal circuit 10d.
In addition, line part 20 is arranged in the opening portion Op1 of earth conductor 22 in high-frequency signal circuit 10d.By This, so that line part 20 and earth conductor 22 are close.If flowing through electric current i1 in line part 20, flows through and be somebody's turn to do in earth conductor 22 Electric current i1 reversed feedback current i2.The magnetic around direction and earth conductor 22 of magnetic flux around line part 20 as a result, Logical surrounding is contrary.In this case, in the gap between line part 20 and earth conductor 22, magnetic flux is mutually reinforcing, with This is opposite, in the region of the positive direction side and negative direction side of more leaning on y-axis direction than earth conductor 22 (that is, high-frequency signal circuit 10 Outer region) in, magnetic flux offsets each other.As a result, can inhibit except flux leakage to high-frequency signal circuit 10d.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10e involved in variation 1.Figure 16 is variation The exploded view of high-frequency signal circuit 10e involved in 1.In Figure 16, arrangement shows surface and the back of dielectric sheet material 18a Face.
Between high-frequency signal circuit 10e and high-frequency signal circuit 10d the difference is that the shape of line part 20,21 and The shape of opening portion Op1, Op2.More specifically, in high-frequency signal circuit 10e, at the both ends of the x-axis direction of line part 20 It is nearby equipped with taper, so that line width is gradually reduced.The line part 20 in part that line part 20 is connected with line part 21 as a result, Line width it is smaller than the line width of the central portion of the x-axis direction of line part 20.
In addition, taper is equipped near the both ends of the x-axis direction of opening portion Op1, so that the width in y-axis direction gradually subtracts It is small.Moreover, the y-axis direction of the part other than central portion of the y-axis direction width than opening portion Op1 of the central portion of opening portion Op1 Width is big.
In addition, taper is equipped near the both ends of the x-axis direction of line part 21, so that line width is gradually reduced.Route as a result, Line width of the line width of line part 21 in the part that portion 20 is connected with line part 21 than the central portion of the x-axis direction of line part 21 Want small.
In addition, taper is equipped near the both ends of the x-axis direction of opening portion Op2, so that the width in y-axis direction gradually subtracts It is small.Opening portion Op2 becomes the shape for imitating line part 21 as a result,.
In the high-frequency signal circuit 10e with the above structure, in the same manner as high-frequency signal circuit 10a, it can inhibit online The reflection of high-frequency signal is generated between road portion 20 and line part 21.
Present inventor has made the model of high-frequency signal circuit 10e, and utilizes computer simulation high frequency Signal line 10e's passes through characteristic and reflection characteristic and the directive property of the leakage electromagnetic field of high-frequency signal circuit 10e.In the following, The condition for emulating used model is illustrated.
W11:100 μm of the width of opening portion Op1
The length L31:0.4mm of opening portion Op2
W31:400 μm of the width of opening portion Op2
W1:500 μm of the line width of line part 20
Interval between line part 21 and earth conductor 22: 200 μm
The entire length of high-frequency signal circuit 10e: 60mm
Figure 17 is the curve graph for indicating simulation result.The longitudinal axis indicates that attenuation, horizontal axis indicate frequency.As can be seen from FIG. 17, In high-frequency signal circuit 10e, the high-frequency signal of 5GHz is suppressed in -0.2dB or so by characteristic.
In addition, according to Figure 17, in high-frequency signal circuit 10e, the reflection characteristic of the high-frequency signal of 1GHz~5GHz is- 40dB or less.It follows that in high-frequency signal circuit 10e, in broad frequency band, the variation of characteristic impedance inhibited.
Figure 18 is the curve graph for indicating simulation result.Figure 18 (a) is to indicate in the section for being parallel to zy plane, signal The curve graph of the intensity for the electromagnetic field that route S1 is radiated, Figure 18 (b) are to indicate in the section for being parallel to zx plane, from letter The curve graph of the intensity for the electromagnetic field that number route S1 is radiated to outside high-frequency signal circuit 10e.
In high-frequency signal circuit 10e, the area of the area ratio opening portion Op2 of opening portion Op1 is big.Therefore, such as Figure 18 Shown, the intensity ratio of the electromagnetic field radiated from high-frequency signal circuit 10e to z-axis direction positive direction side is from high-frequency signal circuit 10e The intensity of the electromagnetic field radiated to z-axis direction negative direction side is eager to excel.As a result, by adjusting the area of opening portion Op1, Op2, can adjust The distribution of the whole electromagnetic field to high-frequency signal circuit 10e external radiation.
In high-frequency signal circuit 10e, electromagnetic field from high-frequency signal circuit 10e to z-axis direction negative direction side that radiated from The intensity of electromagnetic field of the intensity than radiating from high-frequency signal circuit 10e to z-axis direction positive direction side is weak, it is therefore preferable that in height The z-axis direction negative direction side of frequency signal line 10e configures the metal shell of battery pack, shell and other items.It can inhibit because of object as a result, Product and signal line S1 carry out electromagnetic field couples and the characteristic impedance of signal line S1 are made to deviate desired characteristic impedance.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10f involved in variation 2.Figure 19 is variation The exploded perspective view of high-frequency signal circuit 10f involved in 2.
The difference is that the shape of line part 21 and opening between high-frequency signal circuit 10f and high-frequency signal circuit 10d The shape of oral area Op2.More specifically, in high-frequency signal circuit 10f, line part 21 and opening portion Op2 prolong along the y-axis direction It stretches.When overlooking as a result, from z-axis direction, signal line S1 wriggles.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10g involved in variation 3.Figure 20 is variation The exploded perspective view of high-frequency signal circuit 10g involved in 3.
Between high-frequency signal circuit 10g and high-frequency signal circuit 10d the difference is that the shape of line part 20,21 and The shape of opening portion Op1, Op2.More specifically, in high-frequency signal circuit 10g, line part 20 and opening portion Op1 are in y-axis Direction negative direction side arc-shaped outstanding.In addition, line part 21 and opening portion Op2 are in y-axis direction positive direction side circle outstanding Arcuation.When overlooking as a result, from z-axis direction, signal line S1 wriggles.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10h involved in variation 4.Figure 21 is variation The exploded perspective view of high-frequency signal circuit 10h involved in 4.
The difference is that it is provided with coil, capacitor between high-frequency signal circuit 10h and high-frequency signal circuit 10d Equal electronic components 200a, 200b.More specifically, in high-frequency signal circuit 10h, electronic component 200a, 200b are embedded At the back side of dielectric sheet material 18a.On the back side of dielectric sheet material 18a for being embedded with electronic component 200a, 200b, it is equipped with Line part 21 and earth conductor 25.An external electrode of electronic component 200a, 200b is connected with line part 21 respectively as a result, It connects, another external electrode of electronic component 200a, 200b are connected with earth conductor 25 respectively.
In high-frequency signal circuit 10h as described above, electronic component 200a, 200b are mounted on to transfer sheet and set On the earth conductor 25 set.Then, earth conductor 25 and electronic component 200a, 200b are transferred to dielectric piece from transfer sheet The back side of material 18a.
In high-frequency signal circuit 10h, by the way that electronic component 200a, 200b is arranged, so as to by filter circuit, phase In the settings to high-frequency signal circuit 10h such as position adjustment circuit.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10i involved in variation 5.Figure 22 is variation The exploded perspective view of high-frequency signal circuit 10i involved in 5.
Between high-frequency signal circuit 10i and high-frequency signal circuit 10h the difference is that: line part 20 is divided into line Road portion 20a, 20b；And electronic component 200c is additionally provided in addition to electronic component 200a, 200b.
More specifically, in high-frequency signal circuit 10i, a line part 20 in multiple line parts 20 is divided into line Road portion 20a, 20b.Moreover, electronic component 200c is connected to line part 20a, 20b.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10j involved in variation 6.Figure 23 is variation The exploded perspective view of high-frequency signal circuit 10j involved in 6.Figure 24 is the equivalent circuit diagram of the high-frequency signal circuit 10j of Figure 23.
It as shown in figure 23, further include electronic component 200d in high-frequency signal circuit 10j.Electronic component 200d is Capacitor C1 shown in Figure 24, and be arranged on the back side of dielectric sheet material 18a.Moreover, electronic component 200d be connected to it is adjacent Between line part 21.That is, an external electrode of electronic component 200d is connected to the line part that x-axis direction negative direction side is arranged in 21 x-axis direction positive direction side end, another external electrode of electronic component 200d, which is connected to, to be arranged in x-axis direction positive direction The x-axis direction negative direction side end of the line part 21 of side.Electronic component 200d is connected in parallel with line part 20 as a result,.Energy will Line part 20 is regarded as the coil L1 (referring to Figure 24) with inductive component.Therefore, as shown in figure 24, high-frequency signal circuit 10j Electronic component 200d and line part 20 constitute the bandpass filter for being connected in parallel capacitor C1 and coil L1.
In addition, as shown in figure 23, it is consistent with x-axis direction that electronic component 200d is preferably configured to its longitudinal direction. Under the longitudinal direction and x-axis direction unanimous circumstances of electronic component 200d, longitudinal direction and y-axis with electronic component 200d Direction unanimous circumstances are compared, and the y-axis direction width of high-frequency signal circuit 10j can be reduced.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10k involved in variation 7.Figure 25 is variation The exploded perspective view of high-frequency signal circuit 10k involved in 7.Figure 26 is the equivalent circuit diagram of the high-frequency signal circuit 10k of Figure 25.
It as shown in figure 25, further include electronic component 200e, 200f and connection conductor 50 in high-frequency signal circuit 10k. Connection conductor 50 is arranged on the back side of dielectric sheet material 18a, and is not connected with signal line 21 and earth conductor 25.Connection Conductor 50 is the so-called floating electrode as floating potential.
Electronic component 200e is coil L2 shown in Figure 26, and is arranged on the back side of dielectric sheet material 18a.Moreover, electric Sub- component 200e is connected between line part 21 and connection conductor 50.That is, an external electrode of electronic component 200e connects To the x-axis direction positive direction side end of line part 21, another external electrode of electronic component 200d is connected to connection conductor 50.
In addition, electronic component 200f is capacitor C2 shown in Figure 26, and it is arranged on the back side of dielectric sheet material 18a. Moreover, electronic component 200f is connected between connection conductor 50 and earth conductor 25.That is, outside the one of electronic component 200f Electrode is connected to connection conductor 50, and another external electrode of electronic component 200f is connected to earth conductor 25.
In the high-frequency signal circuit 10k with the above structure, as shown in figure 26, electronic component 200e, 200f are constituted The bandstop filter that coil L2 and capacitor C2 are connected in series between signal line S1 and ground connection.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10l involved in variation 8.Figure 27 is variation The exploded perspective view of high-frequency signal circuit 10l involved in 8.Figure 28 is the equivalent circuit diagram of the high-frequency signal circuit 10l of Figure 27.
It as shown in figure 27, further include that electronic component 200d, 200e, 200f and connection are led in high-frequency signal circuit 10l Body 50.In 200d, 200e, 200f and connection conductor 50 and high-frequency signal circuit 10j, 10k in high-frequency signal circuit 10l 200d, 200e, 200f and connection conductor 50 are identical, therefore the description thereof will be omitted.As a result, as shown in figure 28, electronic component 200d The bandstop filter for being connected in parallel capacitor C1 and coil L1 is constituted with line part 20, electronic component 200e, 200f are constituted The bandstop filter that coil L2 and capacitor C2 are connected in series between signal line S1 and ground connection.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10m involved in variation 9.Figure 29 is variation The exploded perspective view of high-frequency signal circuit 10m involved in 9.Figure 30 is the equivalent circuit diagram of the high-frequency signal circuit 10m of Figure 29.
High-frequency signal circuit 10m further includes electronic component 200g, 200h.In high-frequency signal circuit 10m, by multiple lines A line part 20 in road portion 20 is divided into line part 20c, 20d, 20e.
As shown in figure 30, electronic component 200g is capacitor C3, and is arranged on the surface of dielectric sheet material 18a.Separately Outside, due to being equipped with opening on protective layer 14, electronic component 200g exposes to outside.Moreover, electronic component 200g It is connected between line part 20c, 20d.That is, an external electrode of electronic component 200g is connected to the x-axis direction of line part 20c Positive direction side end, another external electrode of electronic component 200g are connected to the x-axis direction negative direction side of line part 20d Portion.
As shown in figure 30, electronic component 200h is coil L3, and is arranged on the surface of dielectric sheet material 18a.In addition, Due to being equipped with opening on protective layer 14, electronic component 200h exposes to outside.Moreover, electronic component 200h connects It connects between line part 20d, 20e.That is, an external electrode of electronic component 200h is being connected to the x-axis direction of line part 20d just Direction side end, another external electrode of electronic component 200h are connected to the x-axis direction negative direction side end of line part 20e.
Electronic component 200g, 200h and line part 20 are connected in series as a result,.Therefore, as shown in figure 30, high-frequency signal line Electronic component 200g, 200h of road 10m is formed in the band logical that capacitor C3 and coil L3 is connected in series on signal line S1 Filter.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10n involved in variation 10.Figure 31 is deformation The exploded perspective view of high-frequency signal circuit 10n involved in example 10.Figure 32 is the equivalent circuit of the high-frequency signal circuit 10n of Figure 31 Figure.
As shown in figure 31, high-frequency signal circuit 10n further includes electronic component 200i, 200j.Electronic component 200i is Coil L4 shown in Figure 31, and be arranged on the back side of dielectric sheet material 18a.Moreover, electronic component 200i is connected to line part Between 21 and earth conductor 25.That is, an external electrode of electronic component 200i is connected to the x-axis direction negative direction of line part 21 Another external electrode of side end, electronic component 200i is connected to earth conductor 25.Electronic component 200i is connected to as a result, Between signal line S1 and ground connection.
In addition, electronic component 200j is capacitor C4 shown in Figure 31, and it is arranged on the back side of dielectric sheet material 18a. Moreover, electronic component 200j is connected between line part 21 and earth conductor 25.That is, an external electrical of electronic component 200j Pole is connected to the x-axis direction positive direction side end of line part 21, and another external electrode of electronic component 200j is connected to ground connection Conductor 25.Electronic component 200j and electronic component 200i is connected in parallel as a result, and is connected to signal line S1 and ground connection Between.
In high-frequency signal circuit 10n as described above, as shown in figure 32, electronic component 200i, 200j are constituted capacitor The bandpass filter that device C1 and coil L1 are connected in parallel.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10o involved in variation 11.Figure 33 is deformation The exploded perspective view of high-frequency signal circuit 10o involved in example 11.Figure 34 is the equivalent circuit of the high-frequency signal circuit 10o of Figure 33 Figure.
It as shown in figure 33, further include electronic component 200g, 200h, 200i, 200j in high-frequency signal circuit 10o.High frequency Electronics member device in electronic component 200g, 200h, 200i, 200j and high-frequency signal circuit 10m, 10n in signal line 10o Part 200g, 200h, 200i, 200j are identical, therefore the description thereof will be omitted.As a result, as shown in figure 34, electronic component 200g, 200h The bandpass filter that capacitor C3 and coil L3 is connected in series is constituted, electronic component 200i, 200j are formed in signal line The bandpass filter for being connected in parallel coil L4 and capacitor C4 between S1 and ground connection.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10p involved in variation 12.Figure 35 is deformation The exploded perspective view of high-frequency signal circuit 10p involved in example 12.
As shown in high-frequency signal circuit 10p, multiple signal line S1, S2 can be equipped with.High-frequency signal circuit can be utilized as a result, 10p is balanced the transmission of signal and the parallel transmission of high-speed digital signal.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10q involved in variation 13.Figure 36 is deformation The top view of high-frequency signal circuit 10q involved in example 13.
The difference is that line part 20,20 ', 21,21 ' between high-frequency signal circuit 10q and high-frequency signal circuit 10p Shape and opening portion Op1, Op2 shape.More specifically, in high-frequency signal circuit 10q, line part 20,20 ', 21, The both ends of 21 ' x-axis direction are nearby equipped with taper, so that line width is gradually reduced.
The line width for the line part 20,20 ' in part that line part 20,20 ' is connected with line part 21,21 ' as a result, compares line The line width of the central portion of the x-axis direction in road portion 20,20 ' wants small.Similarly, line part 20,20 ' is connected with line part 21,21 ' Part in line part 21,21 ' line width it is small than the line width of the central portion of the x-axis direction of line part 21,21 '.
In addition, taper is equipped near the both ends of the x-axis direction of opening portion Op1, Op2, so that the width in y-axis direction is gradually Reduce.Opening portion Op1, Op2 respectively becomes the shape for imitating line part 20,20 ', 21,21 ' as a result,.
In the high-frequency signal circuit 10q with the above structure, in the same manner as high-frequency signal circuit 10a, inhibit in route The reflection of high-frequency signal is generated between portion 20 and line part 21 and between line part 20 ' and line part 21 '.
Present inventor has made the model of high-frequency signal circuit 10q, and has studied height using Computer Simulation Frequency signal line 10q's passes through characteristic, reflection characteristic and isolation characteristic.In the following, being carried out to the condition for emulating used model Explanation.
W11:900 μm of the width of opening portion Op1
Interval between line part 21 and earth conductor 24: 100 μm
The entire length of high-frequency signal circuit 10q: 60mm
Figure 37 is the curve graph for indicating simulation result.Figure 37 (a) indicate by characteristic 1, by characteristic 2, reflection characteristic 1 and Reflection characteristic 2.Figure 37 (b) indicates isolation characteristic 1 and isolation characteristic 2.The longitudinal axis indicates that attenuation, horizontal axis indicate frequency.
The signal that export from the x-axis direction positive direction side end of signal line S1 is indicated by characteristic 1 and from signal line The intensity ratio of the signal of the x-axis direction negative direction side end input of S1.It is indicated by characteristic 2 from the x-axis side of signal line S2 To positive direction side end export signal with from the x-axis direction negative direction side end of signal line S2 input signal intensity it Than.Reflection characteristic 1 indicates the signal that export from the x-axis direction negative direction side end of signal line S1 and from the x of signal line S1 The intensity ratio of the signal of axis direction negative direction side end input.Reflection characteristic 2 indicates the x-axis direction losing side from signal line S2 The intensity ratio of the signal exported to side end and the signal inputted from the x-axis direction negative direction side end of signal line S2.
Isolation characteristic 1 indicates the signal that export from the x-axis direction positive direction side end of signal line S2 and from signal line The intensity ratio of the signal of the x-axis direction negative direction side end input of S1.Isolation characteristic 2 is indicated from the x-axis side of signal line S2 To negative direction side end export signal with from the x-axis direction negative direction side end of signal line S1 input signal intensity it Than.
According to Figure 37 (a) it is found that the high-frequency signal circuit 10q's with 2 bars route S1, S2 passes through characteristic and reflection Characteristic be equal to the high-frequency signal circuit 10e with 1 bars route S1 by characteristic and reflection characteristic.
In addition, according to Figure 37 (b) it is found that high-frequency signal circuit 10q has good isolation characteristic.It follows that in height In frequency signal line 10q, high-frequency signal can be closed in y-axis direction well.
In addition, being equipped with 2 bars route S1, S2 in high-frequency signal circuit 10q, but it can also be equipped with 3 or more signals Route.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10r involved in variation 14.Figure 38 is deformation The exploded perspective view of high-frequency signal circuit 10r involved in example 14.
As shown in the high-frequency signal circuit 10r of Figure 38, when overlooking from z-axis direction, signal line S1 is flexible at U-shaped.
Signal line S1 can be bent without being bent high-frequency signal circuit 10r as a result,.Bending can be reduced as a result, uses height The necessity of frequency signal line 10r.As a result, can electrical characteristics to signal line S1 due to high-frequency signal circuit 10r is bent The situation changed is generated to be inhibited.But it does not hinder bending and uses high-frequency signal circuit 10r.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10s involved in variation 15.Figure 39 is deformation The exploded perspective view of high-frequency signal circuit 10s involved in example 15.
As shown in the high-frequency signal circuit 10s of Figure 39, when overlooking from z-axis direction, signal line S1 can be in T word cabling.
Signal line S1 can be bent without being bent high-frequency signal circuit 10s as a result,.Bending can be reduced as a result, uses height The necessity of frequency signal line 10s.As a result, can electrical characteristics to signal line S1 due to high-frequency signal circuit 10s is bent The situation changed is generated to be inhibited.But it does not hinder bending and uses high-frequency signal circuit 10s.
Next, being illustrated referring to attached drawing to high-frequency signal circuit 10t involved in variation 16.Figure 40 is deformation The exploded perspective view of high-frequency signal circuit 10t involved in example 16.Figure 41 is the high-frequency signal circuit from z-axis direction top view 40 Scheme obtained from the signal line S1 and earth conductor 22,24 of 10t.
As shown in Figure 40 and Figure 41, high-frequency signal circuit 10t and high-frequency signal circuit 10d the difference is that: from master When the interarea normal direction (z-axis direction) of body 12 is overlooked, earth conductor 22 is equipped with the opening portion Op3 Chong Die with line part 21. More specifically, in earth conductor 22, the opening portion of not conductor is equipped between opening portion Op1 adjacent along the x-axis direction Op3.It is equipped with taper near the both ends of the x-axis direction of opening portion Op3, so that the width in y-axis direction is gradually reduced.
In addition, line part 21 overlaps with opening portion Op3 when overlooking from z-axis direction.Moreover, line part 21 and opening portion The part line width Wa in part that Op3 is overlapped more Chong Die with earth conductor 22 than line part 21 is not (that is, Chong Die with opening portion Op3 Part) in line width Wb and line part 20 line width Wc it is big.Moreover, the x in the part Chong Die with opening Op3 of line part 21 Axis direction both ends are nearby equipped with taper, so that line width is gradually reduced.Opening portion Op3 becomes the shape for imitating line part 20 as a result,.
In the high-frequency signal circuit 10t with the above structure, it can try hard to make 12 thinning of main body.More specifically, from z-axis When direction is overlooked, the opening Op3 Chong Die with line part 21 is provided on earth conductor 22.Thus, it is difficult to online road portion 21 with Capacitor is formed between earth conductor 22.Therefore, even if reducing the z-axis direction interval between line part 21 and earth conductor 22, The characteristic impedance in energy limiting circuitry portion 21 is too small.As a result, the characteristic impedance of signal line S1 is maintained predetermined characteristic resistance While anti-, it can try hard to make 12 thinning of main body.
Moreover, in high-frequency signal circuit 10t, it is difficult to capacitor is formed between line part 21 and earth conductor 22, therefore, The line width Wa of the part Chong Die with the Op3 that is open of line part 21 can be increased.It can try hard to reduce the high-frequency electrical of signal line S1 as a result, Resistance.
In addition, as shown in figure 41, opening Op2 and opening Op3 overlapping.Moreover, ruler of the size of opening Op3 than the Op2 that is open It is very little big.More specifically, be open Op3 y-axis direction width than be open Op2 y-axis direction width it is big.As a result, in y-axis side Upward opening Op3 is accommodated in opening Op2.Therefore, though when manufacturing high-frequency signal circuit 10t be open Op2 and opening Op3 it Between positional relationship deviate, can also inhibit be open Op3 from opening Op2 stretch out.As a result, can inhibit in earth conductor 22, large variation occurs for the capacitance formed between 24, and can inhibit the characteristic impedance and predetermined characteristic impedance of signal line S1 Deviate.
In addition, flowing through feedback current in earth conductor 22,25 when thering is electric current to flow through in line part 20,21.Due to the skin that becomes Effect, the feedback current for flowing through earth conductor 22,25 are flowed about in the periphery of opening portion Op1, Op2, Op3, if but electric current exist Feedback flows through earth conductor 22 and the equitant position of earth conductor 25 on z-axis direction, then insertion loss can reduce.Believe in high frequency In number route 10t, the size for the Op3 that is open is bigger than the size for the Op2 that is open, and therefore, the position that reverse current flows through is difficult in thickness Direction overlapping.It can inhibit the reduction of insertion loss as a result,.
In the following, being illustrated referring to attached drawing to high-frequency signal circuit 10u involved in variation 17.Figure 42 is variation The stereoscopic figure of high-frequency signal circuit 10u involved in 17.Figure 43 is high-frequency signal circuit 10u involved in variation 17 Exploded perspective view.Figure 44 is the equivalent circuit diagram of high-frequency signal circuit 10u involved in variation 17.
As shown in figure 42, high-frequency signal circuit 10u extends along the x-axis direction.Moreover, as shown in figure 43, high-frequency signal circuit The signal line S1 of 10u includes signal line S10, S11, S12.
Signal line S10, S11, S12 extend along the x-axis direction.In addition, the signal line S1 phase with high-frequency signal circuit 10 Together, signal line S10, S11, S12 includes line part 20,21 and via conductors b1, b2.
The x-axis direction positive direction side end of signal line S10, signal line S11 x-axis direction negative direction side end, with And the x-axis direction negative direction side end of signal line S12 is connected.Moreover, signal line S11 and signal line S12 are put down each other Extend capablely.
Connector 100a is connected on the x-axis direction negative direction side end of signal line S10.In addition, high-frequency signal line Connection between the connector 100a and signal line S10 of road 10u, connector 100a and signal wire with high-frequency signal circuit 10 Connection between the S1 of road is identical, and therefore, the description thereof will be omitted.
Antenna terminal 150a is connected on the x-axis direction positive direction side end of signal line S11.Specifically, believing It is installed on the x-axis direction positive direction side end of the line part 20 of most positive direction side in number route S11, x-axis direction is set There is antenna terminal 150a.Opening Hk is equipped on protective layer 14, therefore, antenna terminal 150a exposes to outside.Antenna terminal 150a is the terminal being connected with the antenna of wireless communication terminal used in high-frequency signal circuit 10u.
Antenna terminal 150b is connected on the x-axis direction positive direction side end of signal line S12.Specifically, believing It is installed on the x-axis direction positive direction side end of the line part 20 of most positive direction side in number route S12, x-axis direction is set There is antenna terminal 150b.Opening Hl is equipped on protective layer 14, therefore, antenna terminal 150b exposes to outside.Antenna terminal 150b is the terminal being connected with the antenna of wireless communication terminal used in high-frequency signal circuit 10u.Connect antenna terminal The antenna of 150a is different antennae with the antenna for connecting antenna terminal 150b.The antenna for connecting antenna terminal 150a receives frequency phase To higher signal, the antenna for connecting antenna terminal 150b receives the relatively low signal of frequency.
In addition, high-frequency signal circuit 10u includes electronic component 200d, 200e, 200f, 200l, 200m, 200n and connection Conductor 50.Electronic component 200e, 200f, 200l, 200m and connection conductor 50 constitute the high pass of Figure 44 on signal line S11 Filter HPF.Electronic component 200d, 200n constituted on signal line S12 Figure 44 have frequency than high-pass filter HPF Want the low-pass filter LPF of low passband.Moreover, low-pass filter LPF and high-pass filter HPF constitutes duplexer.Duplex Device not only inhibits the signal of signal line S11 to enter signal line S12, and the signal of also inhibition signal line S12 enters letter In number route S11.
Electronic component 200d is the capacitor C14 of Figure 44, and is arranged on the back side of dielectric sheet material 18a.Electronics member Device 200e is the coil L11 of Figure 44, and is arranged on the back side of dielectric sheet material 18a.Electronic component 200f is Figure 43 Capacitor C13, and be arranged on the back side of dielectric sheet material 18a.Electronic component 200d in high-frequency signal circuit 10u, 200e, 200f are identical as electronic component 200d, 200e, 200f in high-frequency signal circuit 10j, 10k, therefore omit its and say It is bright.
In addition, electronic component 200l is the capacitor C11 of Figure 44, and it is arranged on the back side of dielectric sheet material 18a.? In signal line S11, electronic component 200l is connected in series in the middle part of line part 21.Electronic component 200m is the electricity of Figure 44 Container C12, and be arranged on the back side of dielectric sheet material 18a.In signal line S11, electronic component 200m is connected in series At the middle part of line part 21.As a result, as shown in figure 44, in signal line S11, capacitor C11 and capacitor C12 series connection connect It connects.In addition, among capacitor C11 and capacitor C12 between ground connection, being connected in series with coil in signal line S11 L11 and capacitor C13.
In addition, electronic component 200n is the capacitor C15 of Figure 44, and it is arranged on the back side of dielectric sheet material 18a.? In signal line S12, electronic component 200n is connected between line part 21 and earth conductor 25.More specifically, electronics member An external electrode of device 200n is connected to the x-axis direction positive direction side end of line part 21, and electronic component 200n's is another External electrode is connected to earth conductor 25.Capacitor C15 is connected in series between signal line S12 and ground connection as a result,.
High-frequency signal circuit 10u with the above structure is used to 2 antennas and transmission circuit base of wireless communication terminal Plate is connected.High-frequency signal circuit 10u can transmit the signal of 2 kinds of different frequency bands as a result,.
In addition, being built-in with duplexer in high-frequency signal circuit 10u.Therefore, according to high-frequency signal circuit 10u, without setting There is the space that duplexer is configured near transmission circuit, antenna.As a result, can try hard to realize the small-sized of wireless communication terminal Change.
In addition, electronic component 200e, 200f on the back side of the high-pass filter HPF by dielectric sheet material 18a is arranged in, 200l, 200m are constituted, but can also electronic component on surface by dielectric sheet material 18a is arranged in constitute, can also be by The electronic component being arranged on the surface of dielectric sheet material 18a and the electronics being arranged on the back side of dielectric sheet material 18a member Device is constituted.
In addition, electronic component 200d, 200n on the back side of the low-pass filter LPF by dielectric sheet material 18a is arranged in Constitute, but can also electronic component on surface by dielectric sheet material 18a is arranged in constitute, can also be by electricity Jie be arranged in Electronic component on the surface of matter sheet material 18a and the electronic component on the back side of dielectric sheet material 18a is set to constitute.
In the following, being illustrated referring to attached drawing to high-frequency signal circuit 10v involved in variation 18.Figure 45 is variation The exploded view of high-frequency signal circuit 10v involved in 18.
Between high-frequency signal circuit 10v and high-frequency signal circuit 10d the difference is that be not provided with earth conductor 25 and Via conductors B21, B22.
According to high-frequency signal circuit 10v, when overlooking from z-axis direction, line part 21 overlaps with earth conductor 22, therefore, Capacitor is formed between line part 21 and earth conductor 22.On the other hand, due to being not provided with earth conductor 25, line part 20 is opposite with earth conductor.The characteristic impedance of line part 21 is lower than the characteristic impedance of line part 20 as a result,.Route as a result, The characteristic impedance Z1 in portion 20 is different with the characteristic impedance Z2 of line part 21.Specifically, characteristic impedance Z1 ratio characteristic impedance Z 2 is wanted It is high.The characteristic impedance of signal line S1 cyclical movement between characteristic impedance Z1 and characteristic impedance Z2 as a result,.As a result, In signal line S1, short wavelength (i.e. high frequency) standing wave is generated in line part 20 and line part 21.On the other hand, in external electrical It is difficult to generate long wavelength (i.e. low frequency) standing wave between pole 16a, 16b.As above, in high-frequency signal circuit 10v, the production of low-frequency noise Life is inhibited.
In addition, in high-frequency signal circuit 10v, since the generation of low-frequency noise is inhibited, it is connect even if being not provided with Earthed conductor 25 can also inhibit the amount of radiation of noise to increase.Moreover, because being not provided with earth conductor 25, therefore, height can be easily bent Frequency signal line 10v.
High-frequency signal circuit according to the present invention be not limited to high-frequency signal circuit 10 in above embodiment, 10a~ 10v can be carried out change in its teachings.
In addition, the structure of high-frequency signal circuit 10,10a~10v can be combined.
In addition, the connection for high-frequency signal circuit 10,10a~10v and circuit substrate etc., usable connector 100a, Structure other than 100b.As the structure other than connector 100a, 100b, for example, can enumerate flat cable connector, respectively to Anisotropic conductive adhesive etc..
In addition, earth conductor 22 can not form ladder shape when overlooking from z-axis direction.When overlooking from z-axis direction, ground connection is led Body 22 is Chong Die with line part 21, as long as at least there is bridge part Br1.
In addition, earth conductor 25 can not form ladder shape when overlooking from z-axis direction.When overlooking from z-axis direction, ground connection is led Body 25 is Chong Die with line part 20, as long as at least there is bridge part Br2.
In addition, being not necessarily intended to for earth conductor 22 being arranged in the electricity equipped with line part 20 in high-frequency signal circuit 10 and being situated between On the surface of matter sheet material 18a.Earth conductor 22 can be set on following dielectric sheet material, which, which is located at, is equipped with route The dielectric sheet material 18 in portion 20, opposite with 18 side of dielectric sheet material of line part 21 is equipped with side.That is, in high frequency In signal line 10, one layer of dielectric sheet material 18 can be set again in the z-axis direction positive direction side of dielectric sheet material 18a, be situated between in the electricity Earth conductor 22 is set on the surface of matter sheet material 18.
In addition, protective layer 14,15 can be not provided with.
In addition, in high-frequency signal circuit 10 being not necessarily intended to that the surface of dielectric sheet material 18c for earth conductor 24 is arranged in On.Earth conductor 24 can be set on following face, the face be located at the face of the dielectric sheet material 18 equipped with line part 21, with set The side for having the face side of the dielectric sheet material 18 of line part 20 opposite.As a result, in high-frequency signal circuit 10, it can will connect Earthed conductor 24 is arranged on the back side of dielectric sheet material 18b.
In addition, high-frequency signal circuit 10,10a~10v can be used as the letter of the high frequency in the RF circuit substrate such as antenna front ends module Number route.
The present invention is useful for high-frequency signal circuit and including the electronic equipment of the high-frequency signal circuit, particularly, Advantage is that the generation of low-frequency noise can be inhibited.
B1~B4, B21, B22, b1, b2, b13, b14 via conductors
Br1, Br2 bridge part
The opening portion Op1, Op2, Op3
10,10a~10v high-frequency signal circuit
12 dielectric unit bodies
14,15 protective layer
18a~18d dielectric sheet material
20,20 ', the line part of 20a, 20b, 21,21 '
22,22 ', 24,24 ', 25 earth conductor
200a~200n electronic component
1. a kind of high-frequency signal circuit, which is characterized in that
The high-frequency signal circuit includes:
The main body that insulator layer is laminated and constitutes；
Signal line；And
The signal line includes to be set to multiple first line portions of the first layer of the main body and be set to the main body Multiple second line parts of the second layer, the signal line include the first signal line, second signal route and third signal line,
When from stacking direction, at least part of the earth conductor and the first line portion and second line part Overlapping,
One end phase of one end of first signal line, one end of the second signal route and the third signal line It connects,
The other end of first signal line is connected with connector,
The other end of the second signal route is electrically connected with first antenna,
The other end of the third signal line is electrically connected with the second antenna,
The second signal route is provided with first filter,
The second filter for the passband that the third signal line setting has frequency lower than the first filter,
The first filter and/or the second filter are made of the first line portion and electronic component,
The main body has flexibility.
2. high-frequency signal circuit as described in claim 1, which is characterized in that
The first filter is high-pass filter, and the second filter is low-pass filter.
3. a kind of electronic equipment characterized by comprising
It is arranged in the intracorporal high-frequency signal circuit of the shell,
CN201610124559.4A 2012-02-14 2013-02-06 High-frequency signal circuit and electronic equipment including the high-frequency signal circuit CN105657964B (en)
JP2012-029690 2012-02-14
JP2012029690 2012-02-14
JP2012097926 2012-04-23
JP2012-097926 2012-04-23
JP2012167217 2012-07-27
JP2012-167217 2012-07-27
JP2012-250096 2012-11-14
JP2012250096A JP5794218B2 (en) 2012-02-14 2012-11-14 High frequency signal line and electronic device equipped with the same
CN201310047467.7A CN103249245B (en) 2012-02-14 2013-02-06 High-frequency signal circuit and comprise the electronic equipment of this high-frequency signal circuit
CN201310047467.7A Division CN103249245B (en) 2012-02-14 2013-02-06 High-frequency signal circuit and comprise the electronic equipment of this high-frequency signal circuit
CN105657964A CN105657964A (en) 2016-06-08
CN105657964B true CN105657964B (en) 2019-03-08
ID=48048401
CN201610124559.4A CN105657964B (en) 2012-02-14 2013-02-06 High-frequency signal circuit and electronic equipment including the high-frequency signal circuit
US (2) US9490514B2 (en)
JP (1) JP5794218B2 (en)
CN (2) CN105657964B (en)
GB (1) GB2499720B (en)
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