CN101674362A - Communication device - Google Patents
Communication device Download PDFInfo
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- CN101674362A CN101674362A CN200910175649A CN200910175649A CN101674362A CN 101674362 A CN101674362 A CN 101674362A CN 200910175649 A CN200910175649 A CN 200910175649A CN 200910175649 A CN200910175649 A CN 200910175649A CN 101674362 A CN101674362 A CN 101674362A
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- circuit board
- communicator
- key pad
- inductor
- antenna
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Abstract
The invention relates to a communication device, comprising a first circuit board, a second circuit board and an antenna. The first circuit board is arranged on the second circuit board, and is electrically connected with the second circuit board by a connecting point. The first circuit board comprises a clear zone, a plurality of key pads and a plurality of inductors, wherein the key pads correspond to the clear zone, and the inductors are respectively connected between the key pads in series for regulating the inductance of the key pads. The antenna comprises a radiation metal sheet which corresponds to the clear zone and is positioned at one side of the second circuit board so as to receive and transmit wireless signals. By the communication device, SAR value can be effectively reduced,and the design elasticity of the antenna limited by the design of the dimension of the communication device is increased.
Description
Technical field
The present invention particularly can reduce the communicator that radiation absorbs ratio (SAR, Specific Absorption Rate) relevant for a kind of about a kind of communicator.
Background technology
Along with the fast development of wireless communication technology, various communication products, for example the electronic equipment of mobile phone, mobile internet device (MID), net book and other integrated wireless communication function etc. is day by day popularized.Antenna is a topmost element in the communicator, whether exposes to the external classification of casing with antenna, can be divided into concealed antenna and exposed antenna, use concealed antenna that antenna is difficult for because of lost by external force, and product shape is more attractive in appearance.
But; communicator size now all is to design towards compact direction; when in limited space, designing built-in aerial; the often unescapable meeting of the placement location of built-in aerial is overlapping with circuit board; if have metal assembly or ground plate etc. can influence the radianting capacity of antenna at overlapping; therefore usually can be on circuit board default antenna headroom district (antenna clearance area refers to the zone of the no metal corresponding with antenna).Because the space is limit, when the layout of assembly, still may in the headroom district, be provided with the button of part, and these metal key-press pads can increase because of the aerial radiation effect causes the SAR value, thereby cause antenna when design, often to run into the too high problem of SAR value.
At the too high problem of SAR value, solution of the prior art has, and reduces radio frequency (RF) feed-in energy (conducted power) and revises antenna pattern.The former has its minimum value because of the feed-in energy, uses under the few situation of the value of being above standard so method is only applicable to the SAR value.The latter is influential for all frequency bands, the expense that repairs a die of antenna in the time of also can increasing research and development of products.
Summary of the invention
At above-mentioned technical problem, the present invention is serially connected with the inductance of metal key-press on the keypad by adjustment, and the radiation gross energy (TRP, Total Radiated Power) of control low frequency reaches the purpose that reduces the SAR value.
Communicator provided by the invention comprises first circuit board, second circuit board and antenna, and first circuit board is arranged on the second circuit board, and electrically connects by tie point and second circuit board.First circuit board comprises headroom district, a plurality of key pad and a plurality of inductor, and these key pad are corresponding to the headroom district, and these inductors are serially connected with respectively between these key pad, in order to adjust the inductance value of these key pad.Antenna comprises radiation sheet metal, corresponding to the headroom district and be positioned at a side of second circuit board, in order to the transmitting/receiving wireless signal.
According to communicator of the present invention, tie point is arranged on the first circuit board, is provided with at least one inductor between tie point and each key pad.
According to communicator of the present invention, tie point is connected with decoding chip, and this decoding chip is in order to receive and response button Continuity signal.
According to communicator of the present invention, each key pad has conduction outer ring and conduction inner ring, inductor of each conduction outer ring serial connection, inductor of per two conduction inner ring serial connections.Further, these key pad comprise the six press keys pad, and these inductors comprise nine inductors.Further, the inductance value of these nine inductors equates.
According to communicator of the present invention, first circuit board is the button substrate, and second circuit board is the circuit substrate that comprises signal processing circuit.
According to communicator of the present invention, the inductance value of inductor is 39 to 68 nanohenrys.Further, the inductance value of inductor is 47 to 56 nanohenrys.
According to communicator of the present invention, also comprise display screen, keyboard and bonnet, display screen is arranged on the second circuit board, and keyboard and first circuit board are oppositely arranged, and the part button of keyboard is corresponding to these key pad, and bonnet wraps antenna.
By the present invention, can effectively reduce the SAR value, thereby increase because of the Antenna Design elasticity under the exterior design restriction, be specially adapted to extra-thin communicator.
Description of drawings
Fig. 1 is the exploded view of the communicator of one embodiment of the invention;
Fig. 2 is the schematic diagram of the first circuit board of one embodiment of the invention;
Fig. 3 is the key pad of one embodiment of the invention and the connection diagram of inductor;
Fig. 4 A and Fig. 4 B are respectively the schematic diagram of the communicator of another embodiment of the present invention.
Embodiment
For making purpose of the present invention, structure, feature and function thereof there are further understanding, cooperate embodiment to be described in detail as follows now.
See also Fig. 1, Fig. 1 is the exploded view of the communicator 1 of one embodiment of the invention.Communicator 1 can be electronic equipment of mobile phone, mobile internet device (MID), net book and other integrated wireless communication function etc.Communicator 1 comprises first circuit board 11, second circuit board 12 and antenna 13, and first circuit board 11 is arranged on the second circuit board 12, and electrically connects by tie point 110 and second circuit board 12.First circuit board 11 comprises headroom district 119, a plurality of key pad 111 and a plurality of inductor 102, these key pad 111 are corresponding to headroom district 119, these inductors 102 are serially connected with respectively between these key pad 111, in order to adjust the inductance value of these key pad 111.Antenna 13 comprises radiation sheet metal, corresponding to headroom district 119 and be positioned at a side of second circuit board 12, in order to the transmitting/receiving wireless signal.
In one embodiment, first circuit board 11 can be the button substrate, and in order to user's input, second circuit board 12 is for comprising the circuit substrate of signal processing circuit, in order to handle wireless signal and user input signal.First circuit board 11 is electrically connected at signal processing circuit on the second circuit board 12 by tie point 110.
Please in conjunction with referring to Fig. 2, Fig. 2 is the schematic diagram of the first circuit board 11 of one embodiment of the invention.Except the key pad 111 in corresponding headroom district 119 (shown in the shadow region among Fig. 2), also be provided with other key pad 112 on the first circuit board 11, constitute the button substrate together.Tie point is arranged on the first circuit board 11, is provided with at least one inductor 102 between tie point and each key pad 111, corresponding to the frame of broken lines position among Fig. 2.In one embodiment, tie point can be connected with decoding chip 113, and decoding chip 113 is in order to receive and response button Continuity signal.
Please further referring to Fig. 3, Fig. 3 is the key pad 111 of one embodiment of the invention and the connection diagram of inductor 102.Each key pad 111 has conduction outer ring 1111 and conduction inner ring 1112, inductor 102 of each conduction outer ring 1111 serial connection, inductor 102 of per two conduction inner ring 1112 serial connections.In actual applications, these key pad comprise six press keys pad 111, and these inductors comprise nine inductors 102.In one embodiment, the inductance value of these nine inductors can equate.Need to prove that the arrangement mode of inductor quantity of the present invention and inductor is not also as limit.In addition, the position that is provided with of inductor also can be that the present invention is not as limit between key pad and first circuit board edge.
See also Fig. 4 A and Fig. 4 B, Fig. 4 A and Fig. 4 B are respectively the schematic diagram of the communicator 3 of one embodiment of the invention.Communicator 3 comprises first circuit board, second circuit board and antenna, first circuit board has headroom district 320, first circuit board is arranged on the second circuit board, first circuit board has a plurality of key pad, these key pad are serially connected with a plurality of inductors corresponding to headroom district 320 between these key pad.The first circuit board of present embodiment, second circuit board and antenna are similar with antenna 13 to first circuit board 11, second circuit board 12 in the previous embodiment, do not give unnecessary details at this.
Communicator 3 also comprises display screen 33, keyboard 34 and bonnet 35.Display screen 33 is arranged on the second circuit board, in order to show image.Keyboard 34 is oppositely arranged with first circuit board, and its part button (as 6 keys of bottom among Fig. 4 A) is corresponding to the key pad in the headroom district 320.Bonnet 35 can play the effect of self-contained battery, also wraps antenna.
Below by several groups of experimental datas know-why of the present invention is described.From the experimental data of table 1 as can be seen, in GSM 850 frequency bands, when using the big more inductor of inductance value, the radiation gross energy (TRP) of communicator is also big more; Otherwise, selecting the more little inductor of inductance value for use, its TRP can be more little.The inductance value of inductor described in the present invention is 39 to 68 nanohenrys.Preferably, the inductance value of inductor is 47 to 56 nanohenrys.Inductor with 56nH (nanohenry) is an example, and it not only can make SAR value (unit is mW/g) meet rules specification (at present international standard is less than 1.6mW/g), also can make TRP keep certain level.
Table 1
Need to prove that the present invention also is suitable for for the communicator of other standard and other frequency range.Know-why of the present invention is to be serially connected in inductance value on the key pad (Keypad) by change, under the prerequisite that does not influence the antenna high-frequency resistance, changes the antenna low-frequency impedance, further controls the TRP of low frequency, reaches the target that reduces SAR.
By the present invention, can effectively reduce the SAR value, thereby increase because of the Antenna Design elasticity under the exterior design restriction, be specially adapted to extra-thin communicator.
The present invention is described by above-mentioned related embodiment, yet the foregoing description is only for implementing example of the present invention.Must be pointed out that the embodiment that has disclosed does not limit the scope of the invention.On the contrary, change of being done and retouching without departing from the spirit and scope of the present invention all belongs to scope of patent protection of the present invention.
Claims (10)
1. a communicator comprises first circuit board, second circuit board and antenna, and this first circuit board is arranged on this second circuit board, and electrically connects by tie point and this second circuit board, it is characterized in that:
This first circuit board comprises headroom district, a plurality of key pad and a plurality of inductor, and those key pad are corresponding to this headroom district, and those inductors are serially connected with respectively between those key pad, in order to adjust the inductance value of those key pad;
This antenna comprises radiation sheet metal, corresponding to this headroom district and be positioned at a side of this second circuit board, in order to the transmitting/receiving wireless signal.
2. communicator as claimed in claim 1 is characterized in that: this tie point is arranged on this first circuit board, is provided with at least one this inductor between this tie point and each this key pad.
3. communicator as claimed in claim 1 is characterized in that: this tie point is connected with decoding chip, and this decoding chip is in order to receive and response button Continuity signal.
4. communicator as claimed in claim 1 is characterized in that: each this key pad has conduction outer ring and conduction inner ring, and each is somebody's turn to do inductor of conduction outer ring serial connection, and per two should be connected in series an inductor by the conduction inner ring.
5. communicator as claimed in claim 4 is characterized in that: those key pad comprise the six press keys pad, and those inductors comprise nine inductors.
6. communicator as claimed in claim 5 is characterized in that: the inductance value of these nine inductors equates.
7. communicator as claimed in claim 1 is characterized in that: this first circuit board is the button substrate, and this second circuit board is the circuit substrate that comprises signal processing circuit.
8. communicator as claimed in claim 1 is characterized in that: the inductance value of this inductor is 39 to 68 nanohenrys.
9. communicator as claimed in claim 8 is characterized in that: the inductance value of this inductor is 47 to 56 nanohenrys.
10. communicator as claimed in claim 1, it is characterized in that also comprising: display screen, keyboard and bonnet, this display screen is arranged on this second circuit board, this keyboard and this first circuit board are oppositely arranged, and the part button of this keyboard is corresponding to those key pad, and this bonnet wraps this antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910175649A CN101674362A (en) | 2009-09-18 | 2009-09-18 | Communication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910175649A CN101674362A (en) | 2009-09-18 | 2009-09-18 | Communication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101674362A true CN101674362A (en) | 2010-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910175649A Pending CN101674362A (en) | 2009-09-18 | 2009-09-18 | Communication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101674362A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854411A (en) * | 2010-05-21 | 2010-10-06 | 中兴通讯股份有限公司 | Mobile communication terminal |
| CN102013895A (en) * | 2010-12-13 | 2011-04-13 | 惠州市硕贝德通讯科技有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102821179A (en) * | 2012-08-17 | 2012-12-12 | 惠州Tcl移动通信有限公司 | Mobile phone and key structure of ultra-narrow bottom edge frame thereof |
| CN103985953A (en) * | 2013-02-08 | 2014-08-13 | 宏碁股份有限公司 | Electronic apparatus and antenna control method thereof |
| CN106099308A (en) * | 2016-06-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | PCB board assembly and mobile terminal |
| CN109392285A (en) * | 2017-08-07 | 2019-02-26 | 中兴通讯股份有限公司 | A kind of wireless telecom equipment |
-
2009
- 2009-09-18 CN CN200910175649A patent/CN101674362A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101854411A (en) * | 2010-05-21 | 2010-10-06 | 中兴通讯股份有限公司 | Mobile communication terminal |
| CN101854411B (en) * | 2010-05-21 | 2015-07-22 | 中兴通讯股份有限公司 | Mobile communication terminal |
| CN102013895A (en) * | 2010-12-13 | 2011-04-13 | 惠州市硕贝德通讯科技有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102013895B (en) * | 2010-12-13 | 2013-06-19 | 惠州硕贝德无线科技股份有限公司 | Method for solving electromagnetic compatibility problem of antenna of minitype terminal mobile phone |
| CN102821179A (en) * | 2012-08-17 | 2012-12-12 | 惠州Tcl移动通信有限公司 | Mobile phone and key structure of ultra-narrow bottom edge frame thereof |
| CN102821179B (en) * | 2012-08-17 | 2016-01-13 | 惠州Tcl移动通信有限公司 | The press-key structure of a kind of mobile phone and ultra-narrow bottom edge frame thereof |
| CN103985953A (en) * | 2013-02-08 | 2014-08-13 | 宏碁股份有限公司 | Electronic apparatus and antenna control method thereof |
| CN103985953B (en) * | 2013-02-08 | 2017-04-12 | 宏碁股份有限公司 | Electronic apparatus and antenna control method thereof |
| CN106099308A (en) * | 2016-06-28 | 2016-11-09 | 广东欧珀移动通信有限公司 | PCB board assembly and mobile terminal |
| CN109392285A (en) * | 2017-08-07 | 2019-02-26 | 中兴通讯股份有限公司 | A kind of wireless telecom equipment |
| CN109392285B (en) * | 2017-08-07 | 2022-03-01 | 中兴通讯股份有限公司 | Wireless communication equipment |
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Application publication date: 20100317 |