Source: https://patents.google.com/patent/CN1610989A/en
Timestamp: 2020-08-04 01:07:48
Document Index: 349773203

Matched Legal Cases: ['art 33', 'art 33', 'art 33', 'art 33', 'art 33', 'art 33', 'art 33']

CN1610989A - Electronic Equipment - Google Patents
CN1610989A
CN1610989A CNA038011026A CN03801102A CN1610989A CN 1610989 A CN1610989 A CN 1610989A CN A038011026 A CNA038011026 A CN A038011026A CN 03801102 A CN03801102 A CN 03801102A CN 1610989 A CN1610989 A CN 1610989A
CNA038011026A
2003-02-14 Application filed by 株式会社东芝 filed Critical 株式会社东芝
2005-04-27 Publication of CN1610989A publication Critical patent/CN1610989A/en
239000003989 dielectric material Substances 0.000 claims abstract description 109
PCI including many radio modules with different frequency bands each others, shared antenna of these radio modules, and dielectric material movably arranged on a surface of the antenna. A space between antenna and dielectric material is setted adjustable to every corresponding radio module, so that resonant frequency of the antenna can be switched over.
The present invention relates to be used to carry out the electronic equipment that comprises antenna of radio communication.
In recent years, for the electronic equipment such as personal computer, developed the equipment that comprises radio communications system such as LAN and bluetooth (R).In such radio communications system, use the radio wave of 2.5GHz or 5GHz frequency band.In addition, as being used to carry out antenna for radio communication,, use the various antennas such as the antenna of dipole antenna, helical aerials, slot aerial and inversed F shape for the equipment of each type.
In addition, the resonance frequency of antenna is that shape, size and peripheral environment according to antenna determined.Usually, a certain resonance frequency frequency band of having given an antenna assignment.Therefore, when the radio module that uses many frequency bands to differ from one another, be necessary for these corresponding radio modules many antennas are installed, will produce the installing space problem.
Be head it off, described in Japanese Patent Application Publication publication number No.2002-190708, developed and the double frequency band aerial of two resonance frequencys is provided wherein for an antenna, or the triband antenna of three resonance frequencys wherein is provided.
Yet the resonance frequency aspect that an antenna is structurally covered has restriction, and for predetermined quantity (for example, three) or multi-frequency more, have such shortcoming: antenna size becomes very big, and it is very complicated that shape also becomes.In addition, when giving the many resonance frequency of antenna assignment, the shortcoming that exists spendable frequency band to dwindle.
The purpose of this invention is to provide a kind of electronic equipment, in this electronic equipment, can be the resonance frequency of each radio module switched antenna correspondingly, and need not to improve the shape of antenna.
According to the present invention, a kind of electronic equipment is provided, comprising: the radio module that many frequency bands differ from one another; One for the common antenna that uses of corresponding radio module; Be positioned near the dielectric material of antenna; Support dielectric material so that the travel mechanism that dielectric material can move with respect to antenna; Be used for thinking the switching device shifter of the resonance frequency of each radio module switched antenna by the interval between travel mechanism's adjusting antenna and the dielectric material.
According to the electronic equipment of formation like this, when the interval between adjusting antenna and the dielectric material, can be the resonance frequency of each corresponding radio module switched antenna.
Fig. 1 is the perspective view that shows the external structure of the personal computer among first embodiment of the present invention;
Fig. 2 is the figure that is presented at the structure of the antenna that uses in the personal computer;
Fig. 3 is the side view of state of antenna that shown actual installation wherein;
Fig. 4 is the equivalent electric circuit that shows the frequecy characteristic of antenna;
Fig. 5 A is the figure of an example that shows the resonance frequency of antenna to 5C;
Fig. 6 A and 6B show the figure of topology example that moves the travel mechanism of dielectric material with respect to antenna in vertical direction;
Fig. 7 shows the figure of topology example that moves in the horizontal direction the travel mechanism of dielectric material with respect to antenna;
Fig. 8 is the figure that shows the structure of the personal computer among second embodiment of the present invention;
Fig. 9 shows that personal computer carries out the flow chart of the Position Control of dielectric material; And
Figure 10 shows that dielectric material wherein is positioned at the figure of topology example of situation on the opposite of antenna.
Fig. 1 is the perspective view that shows the external structure of the electronic equipment among first embodiment of the present invention.It should be noted,, described portable personal computer (hereinafter being abbreviated as PC) here as the example of electronic equipment.
On PC 1 as electronic equipment of the present invention, many radio module 10a, 10b, 10c have been installed, be used to carry out radio communication, their frequency band differs from one another.The user can use among these radio modules 10a, 10b, the 10c one selectively to carry out radio communication.It should be noted that the radio communication of following type is arranged:
The IEEE802.11b:2.4GHZ frequency band;
The IEEE802.11a:5GHz frequency band;
Bluetooth (R): 2.4GHz frequency band;
The PDC:800MHz/1.5GHz frequency band;
GSM:900MHz/KS GHz/1.9GHz frequency band;
IS-136:800MHz/1.9GHz; And
·Cdmaone(R)：800MHz。
In these radio communication types, IEEE802.11b and IEEE802.11a are the communication standards of the definite WLAN of " IEEE802.11 " working group.Bluetooth (R) is the communication standard of short range radio communication system.PDC, GSM, IS-136 and CdmaOne (R) are the communication standards of mobile radio communicaltions system.
Suppose on PC 1, to have installed two radio modules (wireless device) that are used to realize these radio communications.
PC 1 comprises fuselage cover 2, display part shell 3, LCD panel 4, and keyboard 5.Keyboard 5 is positioned at the upper surface of fuselage cover 2.Fuselage cover 2 and display part shell 3 can rotatably link together each other by hinge 6.Display part shell 3 supports the periphery of LCD panel 4, so that the indication range of LCD panel 4 remains on visible state.Display part shell 3 can rotate in arrow a1-a2 direction by hinge 6.That is, this display part shell 3 can and enter between the enable possition of up state keyboard 5 in the make position that has covered keyboard 5 to rotate.Fuselage cover 2 and display part shell 3 are made by the dielectric material such as synthetic resin.
In addition, the antenna that is used for carrying out in WLAN (IEEE802.11b) radio communication 7 is arranged in display part shell 3.In IEEE802.11b, used Direct swquence spread spectrum (DSSS), this is a kind of radio communication standard of industrial scientific medical (ISM) frequency band of the 2.4GHz of use frequency band, is a kind of spread spectrum system, and maximum can communicate with the traffic rate of 11Mbps.
Preferably antenna 7 is placed higher position so that improve receiving sensitivity.In the present embodiment, consider the situation of using PC 1, plate antenna 7 is positioned at the top of display part shell 3, and this is higher position in use.This antenna 7 is shared for the corresponding radio module 10a, 10b, the 10c that are installed on the PC 1.
As antenna 7, used the antenna of inversed F shape shown in Figure 2.Antenna 7 for this inversed F shape, used squaerial substrate 11, to form an element 13, this element is the radio-wave radiation element that is arranged in antenna substrate 11 upper ends to groove 12, has formed another scope as ground connection (GND) 14 along the upper end of substrate.In addition, in element 13, a power supply point 15 is positioned at a position of close foundation.In the case, the position of power supply point 15 so is provided with, so that the impedance in this point is 50 Ω.
For antenna substrate 11, used thickness to be approximately the metallic plate of 0.1mm, the opposite of substrate is through lamination process and protection.The width W of antenna substrate 11 be set to basically the frequency wanted wavelength (λ) 1/4.When using the radio wave of 2.4GHz frequency band, the concrete size of antenna substrate 11 is approximately 30 * 30mm.In addition, the width of groove 12 is approximately 2mm, and the width of element 13 is approximately 1mm.
Here, the position of the rectangular dielectric material of being made by synthetic resin 8 is such, so that can move in vertical direction with respect to a plane of antenna 7.When the interval between dielectric material 8 and the antenna 7 is set to D, determine the resonance frequency of antenna 7 according to length D.
Fig. 3 is the side view of state that has shown in display part shell 3 actual installation the antenna 7 of inversed F shape.
Antenna 7 is used the top of adhesive to display part shell 3.In the case, antenna 7 is placed like this, and that end that has formed element 13 thereon is predetermined width protruding upward (for example, about 5 to 6mm) from the upper end of LCD panel 4.This has just prevented that element 13 from being influenced by LCD panel 4 when emission/reception radio wave.
In addition, dielectric material 8 is positioned on the plane of antenna 7, so that can be moved by travel mechanism (describing after a while).The size of this dielectric material 8 is enough to comprise the radio-wave radiation part that forms in the upper end of antenna 7 at least.Therefore, the radio-wave radiation of antenna 7 partly is easy to be subjected to the influence of the dielectric constant of dielectric material 8.
Here, when dielectric material 8 closely was attached to antenna 7, the resonance frequency of antenna 7 moved on to the frequency low side, and this depends on the dielectric constant of dielectric material 8.On the other hand, when dielectric material 8 when antenna 7 separates, the interval D between antenna 7 and the dielectric material 8 increases, the influence degree of the dielectric constant of dielectric material 8 descends.Therefore, the resonance frequency of antenna 7 moves on to high-end.
To 5C this state is described below with reference to Figure 4 and 5 A.
Fig. 4 is the equivalent electric circuit that shows the frequecy characteristic of antenna 7.
Antenna 7 can be by coil L shown in Figure 4 and the representative of capacitor C series circuit.The inductance of coil L is determined by the length of the element 13 of antenna 7 and the position of power supply point 15.
The resonance frequency f of antenna 7 0By following formulate:
f 0 = 1 / ( 2 &pi; LC ) - - - - ( 1 )
In addition, capacitor C is by following formulate:
C＝ε rε 0(S/d) (2)
Here, ε rRepresent non-dielectric constant, ε 0The dielectric constant of expression in the vacuum, d are represented the distance between the pole plate of capacitor, and S represents the pole plate area.
Now, when dielectric material 8 during near antenna 7, the ε of top equation (2) rIncrease.That is, when the interval D between antenna 7 and the dielectric material 8 shortens, non-DIELECTRIC CONSTANT rIncrease.Along with ε rIncrease, according to top equation (1) resonance frequency f 0Reduce.
Fig. 5 A is the figure of an example that shows the resonance frequency of antenna 7 to 5C.Fig. 5 A has shown that the distance between antenna 7 and the dielectric material 8 is not less than the situation of predetermined distance (under the situation of this distance, antenna 7 is the influence of dielectric material 8 not) (feature of the individual unit of antenna 7).Fig. 5 B has shown that the interval D between antenna 7 and the dielectric material 8 is the situation of 1mm.Fig. 5 C has shown that the interval D between antenna 7 and the dielectric material 8 is the situation (that is, dielectric material 8 closely is attached to antenna 7) of 0mm.In 5C, abscissa is represented frequency [GHz] at Fig. 5 A, and ordinate is represented the return loss [dB] of radio wave.Return loss becomes the resonance frequency that minimum frequency band is an antenna 7 this moment.
Shown in Fig. 5 A, be not subjected in frequency under the situation of influence of dielectric material 8, the resonance frequency of antenna 7 is 2.617GHz.On the other hand, under the influence of dielectric material 8, the resonance frequency of antenna 7 fluctuates along with the interval D between antenna 7 and the dielectric material 8.That is, interval D is short more, and resonance frequency is low more.In this example, shown in Fig. 5 B, frequency is 2.438GHz, and interval D is 1mm, and shown in Fig. 5 C, frequency is 2.239GHz, and interval D is 0mm.
So, the resonance frequency of antenna 7 is determined according to the interval D between antenna 7 and the dielectric material 8.The position of dielectric material 8 is regulated by travel mechanism 21, shown in Fig. 6 A and 6B.
Fig. 6 A and 6B show the figure of topology example that moves the travel mechanism 21 of dielectric material 8 with respect to the plane of antenna 7 in vertical direction.
As shown in Figure 6A, travel mechanism 21 comprises a limbus plate 22, circular swivel plate 23, and this swivel plate rotates on scale plate 22, is positioned at the knob portion 24 on the swivel plate 23.Scale plate 22 usefulness adhesive are to the upper end of display part shell 3.Swivel plate 23 is around an axle 23a (this is a strong point) rotation.This swivel plate 23 is attached to the central point 25 of dielectric material 8 slidably.Knob portion 24 is used as the operating point of mobile dielectric material 8.
In this structure, when the user with finger manipulation knob portion 24 with in arrow b1 direction rotation " swivel plate 23 " time, dielectric material 8 moves to antenna 7 in arrow c1 direction.In the case, dielectric material 8 is moved by the guiding mechanism (not shown) guiding that is arranged in display part shell 3, and the parallel state of maintenance and antenna 7.Interval D between antenna 7 and the dielectric material 8 is moved and dwindles in arrow c1 direction by dielectric material 8.Therefore, the resonance frequency frequency band of antenna 7 is regulated to low side.
There are many scales 26 neighboring at scale plate 22 along circumferencial direction.These scales 26 are adjusted to the many radio module 10a that are installed on the PC 1, the frequency band of 10b, 10c.The user can use these scales 26 as the tolerance of carrying out frequency adjustment operation like a cork.Swivel plate 23 comprises a structure, and this structure can be for each the scale 26 classifications rotation in these scales.
Fig. 6 B has shown that swivel plate 23 is rotated to the situation of the 3rd scale position.Under this state, when swivel plate 23 when arrow b2 direction is rotated, dielectric material 8 moves in arrow c2 direction.Therefore, the resonance frequency frequency band of antenna 7 is to high-end adjusting.
When dielectric material 8 so moves with respect to antenna 7, resonance frequency that can switched antenna 7.Therefore, all frequency bands of corresponding radio module 10a, 10b, 10c can only cover with an antenna 7.In the case, the resonance frequency frequency band of antenna 7 constitutes like this, so that switched by moving correspondingly of dielectric material 8.Therefore, compare with the structure that many resonance frequency frequency bands are given antenna 7, the shape of antenna 7 does not complicate.In addition, spendable frequency band does not dwindle yet.
It should be noted, though in the example of Fig. 6 A and 6B, moving of three grades of dielectric materials 8 minutes described, also can be further mobile material fine.
In addition, as shown in Figure 7, even in the structure that dielectric material 8 moves in the horizontal direction with respect to the plane of antenna 7, the resonance frequency frequency band of antenna 7 can be regulated in above-described same mode.
Fig. 7 shows the topology example that moves in the horizontal direction the travel mechanism 31 of dielectric material 8 with respect to the plane of antenna 7.
Travel mechanism 31 comprises sliding eye 32, puts the operation part 33 of sliding eye 32 into, and the supporting member 34 that is attached to operation part 33.Sliding eye 32 forms in the upper end of display part shell 3 at the longitudinal direction with respect to antenna 7.Operation part 33 is attached to sliding eye 32 slidably.Supporting member 34 stretches out from the base section of operation part 33, and supports dielectric material 8 by sliding eye 32.
In this structure, as user during in arrow d1 direction move operation part 33, dielectric material 8 moves in arrow e1 direction by supporting member 34.Therefore, the interval D between antenna 7 and the dielectric material 8 is reduced, and the resonance frequency frequency band of antenna 7 is regulated to low side.In addition, when operation part 33 when the direction opposite with arrow d1 moves, dielectric material 8 separates from antenna 7, the resonance frequency frequency band of antenna 7 is to high-end adjusting.
Near sliding eye 32, many scales 35 are arranged along sliding eye.These scales 35 are adjusted to the many radio module 10a that are installed on the PC 1, the frequency band of 10b, 10c.The user can use these scales 35 as the tolerance of carrying out frequency adjustment operation like a cork.Operation part 33 comprises a structure, and this structure can be for each the scale 26 classifications rotation in these scales.
It should be noted, though in the example of Fig. 7, moving of three grades of dielectric materials 8 minutes described, also can be further mobile material fine.
Even in dielectric material 8 structures that move in the horizontal direction with respect to the plane of antenna 7 like this, the resonance frequency of antenna 7 also can fluctuate along with the position of dielectric material 8.Therefore, being installed in all frequency bands of corresponding radio module 10a on the PC 1,10b, 10c can be only with 7 covering of an antenna.
Second embodiment is characterised in that the position of dielectric material 8 is self-regulating.
Fig. 8 is the figure that shows the structure of the PC 1 among second embodiment of the present invention.The position of dielectric material 8 is such, so that with removable with respect to antenna 7 with the same mode of first embodiment.It should be noted,, suppose that the travel mechanism 21 shown in Fig. 6 A and the 6B is travel mechanisms of dielectric material 8 here.
As shown in Figure 8, the radius of swivel plate 23 is r, and rotates on the axle 23a as the strong point.Swivel plate 23 is attached to the central point 25 of dielectric material 8 slidably.When swivel plate 23 when arrow b1 direction is rotated, dielectric material 8 is by guiding mechanism (not shown) guiding, with mobile abreast at arrow c1 direction and antenna 7.In addition, when swivel plate 23 during in the direction opposite with arrow b1 rotation, dielectric material 8 moves in the direction opposite with arrow c1.
Here, in second embodiment, PC 1 comprises driving arrangement 41, input unit 42, control appliance 43 and table 44.
Driving arrangement 41 is based on the control signal rotation/driving swivel plate 23 from control appliance 43 outputs.The position of input unit 42 is such: the selection signal of input radio module specifically, comprises keyboard shown in Figure 15.Control appliance 43 comprises microprocessor.When input unit 42 receives the selection signal of radio modules, equipment reference list 44 is controlled the position of dielectric material 8.In table 44, be provided with for the control signal S that is installed in the many radio modules on the PC 1 (comprising here radio module A, B, C) length of the interval D between antenna 7 and the dielectric material 8, and the information of the anglec of rotation of expression swivel plate 23.
Next, will the operation of second embodiment be described.
Fig. 9 is the flow chart that shows the Position Control of the dielectric material 8 among second embodiment.It should be noted that 43 fetch program of control appliance 43a is with the process that shows in the flowchart.
Hypothesis has been installed three types radio module A, B, C that frequency band differs from one another on PC 1 now.The user can select any one to carry out radio communication on the menu screen (not shown) from these radio modules A, B, C.
When the radio module of having selected to be used for carrying out radio communication (is "Yes" at step S11), select signal (signal of the radio module that the expression user selects) to be provided for control appliance 43 by input unit 42.Therefore, control appliance 43 is at first based on selecting signal identification to enter the radio module (step S12) of user mode.It should be noted that the user mode of each radio module can also be judged from the starting state of operating system (OS) or driver.
Here, when radio module A enters user mode (in step S13 for "Yes"), control appliance 43 reference lists 44 are judged the position (step S14) of the dielectric material 8 of radio module A.In the example of table 44 shown in Figure 8, the position of dielectric material 8 is the D1 with respect to radio module A, and the control signal of this situation is " 01 ".Therefore, when control appliance 43 outputs to driving arrangement 41 with control signal " 01 ", 23 rotations of swivel plate predetermined angle (step S15), the interval between antenna 7 and the dielectric material 8 is adjusted to D1 (step S16).
This also is applicable to the situation when radio module B or C enter user mode.
In other words, for radio module B (being "Yes" in step S17), control appliance 43 reference lists 44 are to output to driving arrangement 41 with control signal " 10 ", and therefore, the interval between antenna 7 and the dielectric material 8 is adjusted to D2 (step S18 is to S20).In addition, for radio module C (being "Yes" in step S21), control appliance 43 reference lists 44 are to output to driving arrangement 41 with control signal " 11 ", and therefore, the interval between antenna 7 and the dielectric material 8 is adjusted to D3 (step S21 is to S24).
Interval D between antenna 7 and the dielectric material 8 is so regulated automatically according to the user mode of each radio module.Therefore, unless the user as among first embodiment, carrying out frequency adjustment operation, otherwise, for each corresponding radio module, resonance frequency that can switched antenna 7.
It should be noted, described the example of pivoting mechanism here, but the present invention is not limited only to this example, can also use a slide mechanism, this mechanism can slide in vertical direction with respect to antenna plane.
In addition, suppose here and described the situation that dielectric material 8 moves in vertical direction with respect to antenna 7.Yet, even travel mechanism shown in Figure 7 31 with respect to antenna 7 in the horizontal direction direction move under the situation of dielectric material 8 and also can use the present invention.
In addition, in first and second embodiment, 8 of dielectric materials are positioned on the plane of antenna 7.Yet, as shown in figure 10, can also use such structure, in this structure, dielectric material 8a, 8b are positioned at the opposite of antenna 7, and dielectric material 8a, 8b are supported so that can move with respect to antenna 7 by travel mechanism 21 or 31.In this structure, the resonance frequency frequency band of antenna 7 is determined by the interval D b between the Da between antenna 7 and the dielectric material 8a and antenna 7 and the dielectric material 8b.
In the case, for example,, can realize the switching of more resonance frequency if the interval D a of dielectric material 8a, 8b, Db can regulate independently of one another.
In addition, even under interval D a, Db can the mode situations about regulating with link, owing to use two dielectric materials to make the relative dielectric constant increase.Therefore, can increase the adjustment width of resonance frequency, also can realize the switching of more resonance frequencys.
In addition, under the self-adjusting situation of in using second embodiment, describing, in table, be provided with expression for the information of the control signal of each corresponding radio module and interval D a, the Db between antenna 7 and dielectric material 8a, the 8b.Therefore, can regulate the resonance frequency of antenna 7 according to the user mode of each radio module.
This moment, processing procedure was similar to the process of Fig. 9.That is, at first, control appliance 43 identification is used for the radio module that communicates at corresponding radio module.Secondly, control appliance 43 obtains the dielectric material 8a of the radio module of identification, the positional information of 8b from table.Next, control appliance 43 is based on each travel mechanism of positional information driving/control of dielectric material 8a, 8b, so that corresponding dielectric material 8a, 8b are moved on to predetermined position.Therefore, the resonance frequency of antenna 7 is adjusted automatically.
In addition, as the example of antenna 7, described the antenna of the F shape of counter-rotating, but the present invention is not limited only to this.For example, also can use other antennas such as dipole antenna, helical aerials and slot aerial.
In addition, electronic equipment of the present invention is not limited only to personal computer, and can be applied to all electronic equipments such as cell phone, as long as this electronic equipment need use antenna to carry out radio communication.
According to above-described the present invention, can obtain a kind of electronic equipment, this electronic equipment can Take correspondingly as the resonant frequency of each radio module switched antenna, need not to improve the shape of antenna Shape.
The radio module that many frequency bands differ from one another;
One for the common antenna that uses of corresponding radio module;
Be positioned near the dielectric material of antenna;
Support dielectric material so that the travel mechanism that dielectric material can move with respect to antenna; And
Be used for thinking the switching device shifter of the resonance frequency of each radio module switched antenna by the interval between travel mechanism's adjusting antenna and the dielectric material.
2. electronic equipment according to claim 1, wherein antenna comprises plate antenna, and
On a plane of antenna, arranged dielectric material.
3. electronic equipment according to claim 1, wherein corresponding radio module is included in the radio module that uses and have specific frequency band in the WLAN.
4. electronic equipment according to claim 1, wherein travel mechanism supports dielectric material so that dielectric material can move in vertical direction with respect to antenna.
5. electronic equipment according to claim 2, wherein travel mechanism supports dielectric material so that dielectric material can move in vertical direction with respect to a plane of antenna.
6. electronic equipment according to claim 5 wherein further comprises:
Operation part, this operation part can be regulated the position of the dielectric material that travel mechanism supports by manual operations.
7. electronic equipment according to claim 1, wherein travel mechanism supports dielectric material so that dielectric material can move in the horizontal direction with respect to antenna.
8. electronic equipment according to claim 2, wherein travel mechanism supports dielectric material so that dielectric material can move in the horizontal direction with respect to a plane of antenna.
9. electronic equipment according to claim 8 further comprises:
10. electronic equipment according to claim 2 further comprises:
Be positioned at second dielectric material that the dielectric material with on the plane that is positioned at antenna on another plane of antenna separates,
Wherein, travel mechanism supports two dielectric materials, so that dielectric material can move with respect to antenna.
11. electronic equipment according to claim 1 further comprises:
Control device is used for according to the user mode of each radio module the dielectric material that travel mechanism supported being moved on to predetermined position.
12. electronic equipment according to claim 11, wherein control device comprises:
Recognition device is used for being identified in corresponding radio module and communicates employed radio module; And
Driving control device, the type that is used for the radio module discerned based on recognition device drives travel mechanism, so that dielectric material is moved on to predetermined position.
13. electronic equipment according to claim 12 further comprises:
Meter apparatus, in this device, for each corresponding radio module is provided with information about the interval between antenna and the dielectric material,
Wherein, driving control device reference list device is so that move on to position corresponding to radio module with dielectric material.
14. electronic equipment according to claim 10 further comprises:
Control device is used for according to the user mode of corresponding radio module two dielectric materials that travel mechanism supported being moved on to predetermined position.
15. electronic equipment according to claim 14, wherein control device comprises:
Driving control device, the type that is used for the radio module discerned based on recognition device drives travel mechanism, so that two dielectric materials are moved on to predetermined position.
16. electronic equipment according to claim 15 further comprises:
Meter apparatus, in this device, for each corresponding radio module is provided with information about the interval between antenna and two dielectric materials,
Wherein, driving control device reference list device is so that move on to position corresponding to radio module with two dielectric materials.
CNA038011026A 2003-02-14 2003-02-14 Electronic Equipment CN1610989A (en)
CN1610989A true CN1610989A (en) 2005-04-27
CNA038011026A CN1610989A (en) 2003-02-14 2003-02-14 Electronic Equipment
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