Source: https://patents.google.com/patent/WO2016076605A2/en
Timestamp: 2019-12-10 22:19:07
Document Index: 356452262

Matched Legal Cases: ['art 12', 'art 11', 'art 12', 'art 11', 'art 12', 'art 11', 'art 12', 'art 12', 'art 11']

WO2016076605A2 - Antenna device of portable terminal and portable terminal including same - Google Patents
Antenna device of portable terminal and portable terminal including same Download PDF
WO2016076605A2
WO2016076605A2 PCT/KR2015/012061 KR2015012061W WO2016076605A2 WO 2016076605 A2 WO2016076605 A2 WO 2016076605A2 KR 2015012061 W KR2015012061 W KR 2015012061W WO 2016076605 A2 WO2016076605 A2 WO 2016076605A2
PCT/KR2015/012061
WO2016076605A3 (en
WO2016076605A9 (en
임종록
2014-11-11 Priority to KR1020140156445A priority Critical patent/KR101691081B1/en
2014-11-11 Priority to KR10-2014-0156445 priority
2014-11-14 Priority to KR20140158932 priority
2014-11-14 Priority to KR10-2014-0158932 priority
2015-11-10 Application filed by 주식회사 이엠따블유 filed Critical 주식회사 이엠따블유
2016-05-19 Publication of WO2016076605A2 publication Critical patent/WO2016076605A2/en
2016-08-25 Publication of WO2016076605A3 publication Critical patent/WO2016076605A3/en
2016-10-27 Publication of WO2016076605A9 publication Critical patent/WO2016076605A9/en
The present invention provides: an antenna device of a portable terminal that can easily change the resonant frequency and impedance of an antenna that is formed of a segmented metal frame; and a portable terminal including the same. According to an implemented embodiment of the present invention, provided is the antenna device of a portable terminal, comprising: a metal frame mounted in the case frame of the portable terminal and segmented into a first part and a second part; a circuit board that is disposed in the case frame and has a power feeding portion and a ground surface formed thereon, wherein the power feeding portion feeds a current; and a ground matching unit, wherein the first part of the metal frame is connected to the power feeding portion, one side of the power feeding portion is grounded by the ground surface, the second part is grounded by the ground surface, and the opposite ends of the ground matching unit are connected to the ground surface.
Antenna device of portable terminal and portable terminal comprising same
The present invention relates to an antenna device of a portable terminal and a portable terminal including the same, and more particularly, to an antenna device of a portable terminal including a metal frame disposed on the case frame of the terminal and a portable terminal including the same.
Portable terminals, such as smart phones, mobile phones, tablet computers, navigation, electronic clocks, etc. are generally widely portable and can be conveniently used anywhere, and thus their use is greatly expanded. In addition, in order to enhance the exterior design of such a portable terminal, a metal frame is increasingly used in the case frame.
However, the current flowing through the antenna of the terminal can be induced in the metal frame, thereby degrading the performance of the antenna, for example, radiation performance. Therefore, the structure in which the metal frame can be applied to the case frame is limited, and in order to alleviate such a problem, a method of segmenting the metal frame to operate a part of the metal frame as an antenna is used.
In addition, in the antenna of the terminal, a PCB pattern change, a matching element change, or a side ground contact point change is used to adjust resonance characteristics, but other methods except for changing the matching element require a lot of time and cost.
In addition, when the segmented metal frame is used as the antenna, the adjacent segmented metal frame deteriorates the radiation performance of the antenna.
Embodiments of the present invention are to provide an antenna device of a portable terminal that can easily change the second and impedance of the antenna formed by the segmented metal frame.
In addition, embodiments of the present invention, to provide an antenna device of a portable terminal capable of suppressing the phenomenon that the rest of the metal edge other than the segmented metal frame forming the antenna inhibits the radiation performance of the antenna formed of the segmented metal frame. It is for.
However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.
One embodiment of the present invention, the metal frame is mounted to the case frame of the portable terminal, divided into a first part and a second part; A circuit board disposed in the case frame, the circuit board including a power supply unit for transmitting current and a ground plane; And a ground matching unit, wherein the first part of the metal frame is connected to the feeding part, one side of the feeding part is grounded by the ground plane, and the second part is grounded by the ground plane Both ends of the ground matching unit are connected to the ground plane to provide an antenna device of a portable terminal.
The power supply unit is connected to the first area of the ground plane through a first connection wire, the second part is connected to the second area of the ground plane through a second connection wire, and the ground matching unit is connected to the first connection wire. An area may be connected between the area and the second connection line or between the second area on the side connected to the first area and the second connection line.
Both ends of the ground matching unit may be disposed with the feeder interposed therebetween when viewed in a plan view.
The ground matching unit may include a first contact structure connected to the first region, a second contact structure connected to the second connection line, and a bridge connecting the first contact structure and the second contact structure. have.
Concentrators may be connected to the bridge in series or in parallel.
The ground plane may further include a third region between the first region and the second region, and the ground matching unit may further include a branch connecting the third region and the bridge.
The branching element may be connected in series or in parallel.
Another embodiment of the present invention provides a portable terminal including an antenna device, the antenna device comprising: a metal frame mounted on a case frame of the portable terminal and divided into a first part and a second part; A circuit board disposed in the case frame, the circuit board including a power supply unit for transmitting current and a ground plane; And a ground matching unit, wherein the first part of the metal frame is connected to the feeding part, one side of the feeding part is grounded by the ground plane, and the second part is grounded by the ground plane Both ends of the ground matching unit provide a portable terminal connected to the ground plane.
Another embodiment of the present invention, the multi-antenna unit including a first antenna and a second antenna; A first ground portion having a first ground path and for grounding the first antenna; And a second ground portion for grounding the second antenna, the second ground portion having a second ground path, wherein the second ground portion of the first ground path and the second ground path has a short length of the ground path characteristic. It provides an antenna, characterized in that.
If the second ground path is longer than the first ground path, the resonance frequency of the multi-antenna portion is lower than the resonance frequency of the first antenna, and if the second ground path is shorter than the first ground path, the first antenna The resonance frequency of the multi-antenna portion may be higher than the resonance frequency of the.
The second antenna operates as a radiator, and the radiation efficiency increases as the ground path moves away from the adjacent ground.
The second antenna may be operated as a lumped element including an inductor.
The present invention also provides a wireless terminal apparatus including the antenna and performing one of data transmission and reception and transmission and reception through wireless transmission and reception using a multiple antenna unit including a base station, a first antenna, and a second antenna. Can be.
Yet another embodiment of the present invention provides a wireless terminal device including an antenna, the antenna comprising: a multi-antenna unit including a first antenna and a second antenna; A first ground portion having a first ground path and for grounding the first antenna; And a second ground portion for grounding the second antenna, the second ground portion having a second ground path, wherein the second ground portion of the first ground path and the second ground path has a short length of the ground path characteristic. A wireless terminal device is provided.
According to embodiments of the present invention, there is an effect that can easily change the resonance frequency and impedance of the antenna formed by the segmented metal frame.
In addition, according to embodiments of the present invention, there is an effect that can suppress the phenomenon that the rest of the metal edge other than the segmented metal frame forming the antenna inhibits the radiation performance of the antenna formed of the segmented metal frame.
1 is a schematic partial plan view of an antenna device of a portable terminal according to an embodiment of the present invention;
2 is a schematic partial perspective view of an antenna device of a portable terminal according to an embodiment of the present invention;
3 is a schematic partial plan view of an antenna device of a portable terminal according to another embodiment of the present invention;
Figure 4 (a) is a graph showing the performance of the conventional antenna device, Figure 4 (b) is a graph showing the performance of the antenna device according to an embodiment of the present invention,
FIG. 5A is a graph comparing antenna performance when an inductor is used as a lumped element on a bridge path of a ground matching unit according to an embodiment of the present invention and when there is no lumped element. FIG. Is a graph comparing the performance of an antenna when a capacitor is used as a lumped element on a bridge path of a ground matching unit according to an embodiment of the present invention and when there is no lumped element;
6 is a diagram of a ground path comparison between the antenna feed stage and the side metal;
7 (a) and 7 (b) are partial perspective views of the present invention,
8 is a view showing an embodiment of the present invention;
9 illustrates another embodiment of the present invention.
Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is only an example and the present invention is not limited thereto.
In describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification.
The technical spirit of the present invention is determined by the claims, and the following embodiments are merely means for efficiently explaining the technical spirit of the present invention to those skilled in the art.
In the case of an antenna using a metal case, the resonance frequency and the impedance of the antenna may be determined by the length of a path connected between the metal structure used as the antenna and the adjacent metal structure. When the length of the path is longer, the resonance frequency is downward, and when the path length is short, the resonance frequency can be adjusted by using a feature that is upward. Therefore, by adding at least one auxiliary antenna to the main antenna, by adding the antenna by looking at the length corresponding to the resonance frequency to be adjusted, it is possible to improve the antenna efficiency without modifying the pattern of the terminal. By using only one antenna to improve the antenna efficiency, it is possible to solve the problem of a large investment cost and time when modifying the pattern formed in the terminal.
That is, various patterns and existing patterns may be utilized through a plurality of antennas and multiple grounds corresponding to the plurality of antennas.
Here, the ground path corresponding to the antenna is greatly influenced by the ground path corresponding to the shortest distance among the ground paths of the plurality of antennas. That is, the antenna efficiency can be improved by using a feature that depends on the shortest distance that can be moved by the formed circuit and the metal structure.
An object of the present invention is to provide a shorter path than a ground path connected between an adjacent metal structure and an antenna by a circuit implemented on a conventional PCB, so that the impedance and resonance frequency of the antenna can be easily adjusted.
In addition, the present invention has an object of adjusting the antenna performance so that the resonance frequency is increased when the path between the adjacent ground and the antenna is shortened by the structure and the resonance frequency of the antenna decreases as the length of the proposed structure increases.
In addition, the length increase effect of the structure caused by the addition of such an auxiliary antenna can be replaced by a concentrated element such as an inductor. In addition, the proposed ground matching unit also serves as an auxiliary radiator that enables another resonance frequency to be formed by changing the volume of the antenna and changing its shape, thereby improving the radiation performance of the antenna. . In addition, in the case of using the radiation by the ground path, the radiation efficiency increases as the ground path moves away from the adjacent ground, and in the case of using the proposed structure, the radiation efficiency can be increased in accordance with these characteristics.
The antenna structure proposed in the present invention has one or more ground paths, and through this, it is possible to increase and decrease the inductance and capacitance generated between the antenna and the ground of the terminal together with the matching unit configured on the PCB.
1 is a schematic partial plan view of an antenna device of a portable terminal according to an embodiment of the present invention, Figure 2 is a partial perspective view of the antenna device of a portable terminal according to an embodiment of the present invention.
As shown, the antenna device of a portable terminal according to an embodiment of the present invention is disposed on, for example, a side wall of a frame case (not shown) of a portable terminal such as a smartphone, for example, and the first part ( 11) and the metal edges 11 and 12 segmented into the second part 12, the circuit board 17 disposed inside the frame case, and the ground matching unit 16.
The first part 11 of the metal rims 11, 12 may be connected to the feeder 15 of the circuit board 17 to function as an antenna. The second part 12 of the metal rims 11, 12 may be connected via a connecting wire 14 to the second region 32 of the ground plane 13 of the circuit board 17 to function as ground. The first part 11 and the second part 12 are segmented with each other and are not directly connected.
The feeder 15 and the ground plane 13 may be formed on the circuit board 17, and the feeder 15 may be connected to the first part 11 of the metal frame. In addition, the power supply unit 15 may be connected to a duplexer (not shown) on the circuit board 17. The power supply unit 15 may be connected to the first region 31 of the ground plane 13 through the first connection line 24. Concentrators such as capacitors and inductors may be disposed on the paths of the connection lines 24.
A ground plane 13 is formed on the circuit board 17. The ground plane 13 is a first region 31 and a second connection wire connected to the power supply unit 15 through the first connection wire 24. The second region 32 connected to the second part 12 and the third region 33 disposed between the first region 31 and the second region 32 may be divided through the reference numeral 14. . The ground plane 13 has a partially recessed shape when viewed as a whole, and no ground is formed at such an indented portion on the substrate 17.
By the configuration as described above, the second part 12, the second connection wiring 14, the second region 32, the third region 33, the first region 31, and the first connection wiring 24 ), A resonance formation path that sequentially connects the power supply unit 15 and the first part 11 may be formed by bypassing the indented portion of the ground plane 13.
The ground matching unit 16 connects between the first region 31 and the second connection wiring 14 or between the second region 32 on the side connected to the first region 31 and the second connection wiring 14. Can connect As shown in FIG. 2, the first contact structure 19 is formed on the first region 31 so as to protrude from the ground plane 13, and the second contact structure 20 is formed on the second connection wiring 14. ) May be formed to protrude from the ground plane 13, and a bridge 18 connecting the first contact structure 19 and the second contact structure 20 may be formed. Further, the concentrating elements 21 may be arranged in series or in parallel on the path of the bridge 18, and the concentrating elements 21 may be replaced or adjusted.
In the present embodiment, the ground matching unit 16 is formed three-dimensionally, but the present invention is not limited thereto, and may be a two-dimensionally planar structure, or formed on or inside the circuit board 17. May be
As shown in FIGS. 1 and 2, the ground matching unit 16 may be formed across the indented portion of the ground plane 13, but is not limited thereto. At this time, it may be formed to cross the feed section 15 formed in the indented portion of the ground plane (13). That is, the ground matching unit 16 may be formed to intersect when viewed on a plane without being electrically connected to the power supply unit 15. In this case, an insulating layer is formed between the ground matching unit 16 and the power supply unit 15, or the ground matching unit 16 is spaced apart from the substrate 17 or inside the substrate 17, or the substrate 17. It can be formed on other surfaces of the.
3 is a schematic partial plan view of an antenna device of a portable terminal according to another embodiment of the present invention. As shown in FIG. 3, the antenna device of the portable terminal according to another embodiment of the present invention has a branch 25 as compared to the antenna device of the portable terminal according to the embodiment of the present invention shown in FIGS. 1 and 2. ) May be further included. That is, the ground matching unit 16b of the antenna device of the portable terminal according to another embodiment may include a bridge 18 connecting the first region 31 and the second connection wiring 14 of the ground plane 13, and It may include a branch 25 connecting the bridge 18 and the third region 33.
The ground matching unit 16b may be a three-dimensional structure. In this case, the ground matching unit 16b may be connected to the third region 33 through a third contact structure 23 formed to protrude on the third region 33.
In FIG. 3 the branch 25 is formed of a three-dimensional structure spaced apart from the surface of the circuit board 17, but is not limited thereto, on or in or on the surface of the circuit board 17. It can be formed on other surfaces. In addition, as illustrated, the concentrator 21a may be arranged in series or in parallel on the path of the branch 25, and the concentrator 21a may be exchanged or adjusted.
In addition, the branch 25 may be formed to overlap in the direction parallel to the feeder 15 formed in the indented portion. That is, the branch 25 may be formed at an overlapping position in plan view without being electrically connected to the feeder 15. In this case, an insulating layer may be formed between the branch 25 and the feed section 15, or the branch 25 may be spaced apart from or within the substrate 17, or on another surface of the substrate 17. Can be.
4 is the performance of the antenna device of the conventional portable terminal without the ground matching unit (Fig. 4 (a)) and the performance of the antenna device of the portable terminal including the ground matching unit according to an embodiment of the present invention (Fig. 4 It is a graph comparing (b)).
As shown in FIG. 4A, in the conventional antenna device, the resonance point is downward, the in-band efficiency is -8 dB or more, and the radiation efficiency is -1.3 dB or more.
On the other hand, in the case of the antenna device of a portable terminal according to an embodiment of the present invention,
As shown in (b) of FIG. 4, the application resonance frequency adjustment and the impedance adjustment are possible, the efficiency of the antenna is improved, and the resonance movement and band characteristics are improved. In addition, the in-band efficiency is -2.5 dB or more, and the radiation efficiency is -0.25 dB or more, which is about 1 dB higher than the case where no ground matching unit is used. In addition, as described above, frequency change and resonance characteristic adjustment are easy.
FIG. 5 shows an antenna device in which an inductor (FIG. 5A) and a capacitor (FIG. 5B) are disposed on the path of the bridge 18 as a lumped element in the ground matching unit and when there is no lumped element. This is a graph comparing the performance of.
As shown in FIG. 5A, when an inductor is used as a lumped element (S1,1), a band frequency may be shifted, and a band frequency that does not exist previously may be generated, and radiation efficiency of an antenna may be generated. This can be improved.
As shown in (b) of FIG. 5, when a capacitor is used as the lumped element (S1,1), the band frequency width may be widened and the antenna efficiency may be improved.
6 is a diagram illustrating a ground path comparison between the antenna feed stage and the side metal.
7 (a) and 7 (b) are partial perspective views of the present invention.
FIG. 8 is a diagram illustrating an embodiment of the present invention and illustrates a connection by two or more contact structures and a metal material structure formed on a substrate or a three-dimensional structure.
9 is a view showing another embodiment of the present invention showing a structure in which a specific concentrator is connected to the structure of FIG. 8.
As described above, the present invention has been described with reference to the embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the technical spirit of the present invention.
In addition, it will be apparent to those skilled in the art to replace or modify the components shown in the present invention with technical elements that perform a known similar function.
Therefore, the scope of the present invention should not be limited to the scope of the present invention, but limited to the spirit and equivalents shown in the following claims.
A metal frame mounted on the case frame of the portable terminal and segmented into a first part and a second part;
A circuit board disposed in the case frame, the circuit board including a power supply unit for transmitting current and a ground plane; And
A ground matching unit,
The first part of the metal frame is connected to the feed part, one side of the feed part is grounded by the ground plane, the second part is grounded by the ground plane,
Both ends of the ground matching unit is connected to the ground plane, the antenna device of the portable terminal.
The feeding part is connected to the first region of the ground plane through a first connection wire, and the second part is connected to the second region of the ground plane through a second connection wire,
And the ground matching unit connects between the first area and the second connection line or between the second area on the side connected with the first area and the second connection line.
Both ends of the ground matching unit are arranged with the power feeding portion interposed therebetween in plan view.
The ground matching unit includes a first contact structure connected to the first region, a second contact structure connected to the second connection wire, and a bridge connecting the first contact structure and the second contact structure, Antenna device of a portable terminal.
Concentrator is connected to the bridge in series or in parallel, the antenna device of a portable terminal.
The ground plane further comprises a third region between the first region and the second region,
The ground matching unit further includes a branch connecting the third area and the bridge.
The branching element is connected to the branch in series or in parallel, the antenna device of the portable terminal.
A portable terminal comprising an antenna device,
Both ends of the ground matching unit are connected to the ground plane.
In the antenna,
A multiple antenna unit including a first antenna and a second antenna;
A first ground portion having a first ground path and for grounding the first antenna;
And a second ground portion having a second ground path and for grounding the second antenna.
Resonant frequency of the antenna unit is characterized in that the short length of the ground path characteristics of the first ground path and the second ground path dominant.
If the second ground path is longer than the first ground path, the resonance frequency of the multi-antenna portion is lower than the resonance frequency of the first antenna.
And if the second ground path is shorter than the first ground path, the resonance frequency of the multi-antenna portion is higher than the resonance frequency of the first antenna.
And the second antenna operates as a radiator, and the radiation efficiency increases as the ground path moves away from the adjacent ground.
And the second antenna operates as a concentrator including an inductor.
A wireless terminal device comprising an antenna,
The second antenna unit is characterized in that the short path length characteristic of the first ground path and the second ground path is dominant.
PCT/KR2015/012061 2014-11-11 2015-11-10 Antenna device of portable terminal and portable terminal including same WO2016076605A2 (en)
KR1020140156445A KR101691081B1 (en) 2014-11-11 2014-11-11 Antena for use in a portable terminal and a portable terminal including same
KR10-2014-0156445 2014-11-11
KR20140158932 2014-11-14
KR10-2014-0158932 2014-11-14
WO2016076605A2 true WO2016076605A2 (en) 2016-05-19
WO2016076605A3 WO2016076605A3 (en) 2016-08-25
WO2016076605A9 WO2016076605A9 (en) 2016-10-27
ID=55955224
PCT/KR2015/012061 WO2016076605A2 (en) 2014-11-11 2015-11-10 Antenna device of portable terminal and portable terminal including same
WO (1) WO2016076605A2 (en)
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