CN102801832B - Cell phone capable of receiving and transmitting multi-frequency-band signal - Google Patents
Cell phone capable of receiving and transmitting multi-frequency-band signal Download PDFInfo
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- CN102801832B CN102801832B CN201210271790.8A CN201210271790A CN102801832B CN 102801832 B CN102801832 B CN 102801832B CN 201210271790 A CN201210271790 A CN 201210271790A CN 102801832 B CN102801832 B CN 102801832B
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Abstract
The invention discloses a cell phone capable of receiving and transmitting multi-frequency-band signal, and the cell phone comprises a baseband chip, a radio frequency circuit, a first antenna and a second antenna, wherein the first antenna and the second antenna have different work frequency bands; one end of the radio frequency circuit is respectively connected with the first antenna and the second antenna; and the other end of the radio frequency circuit is connected with a phase circuit of the baseband chip. According to the cell phone capable of receiving and transmitting the multi-frequency-band signal disclosed by the invention, each antenna does not bear a task of receiving and transmitting radio frequency signals of a plurality of the frequency bands in the prior art, so that the defect in the prior art that the design of a single antenna requires that the antenna has a larger size is overcome and the space in a cell phone shell can be more effectively utilized; and therefore, the structural design of the cell phone is more flexile, the volume of the cell phone is convenient to reduce, and the portability of the cell phone is improved.
Description
Technical field
The present invention relates to electronic communication field, particularly relate to the radio-frequency technique of mobile phone.
Background technology
Antenna for mobile phone is the vitals of mobile phone, for receiving and electromagnetic signals, to reach the object of communication.In prior art, no matter be GSM(global system for mobile communications, global system for mobile communications) standard, or WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)) standard, an antenna is all only set, both for receiving and dispatching high-frequency signal also for receiving and dispatching low frequency signal.As China Intellectual Property Office discloses a kind of antenna for mobile phone on December 29th, 2010, its publication number is CN 201689979U, this antenna for mobile phone comprises unipole antenna and earth terminal, the feed side that unipole antenna comprises sheet metal and extends from sheet metal, earth terminal extends from sheet metal, preferably, feed side and earth terminal all extend from the edge of sheet metal, earth terminal is near feed side, earth terminal and feed side be arranged in parallel, and can by suitably adjusting this earth terminal relative position in antennas, the impedance matching of antenna and transmission line is improved, at least one slotted eye is offered in sheet metal.
, though the transmitting-receiving that also can realize multi-band signal, there is following defect in this antenna for mobile phone:
1. this antenna needs to have larger volume, takes up room comparatively large, is unfavorable for the portability design of mobile phone;
2. the design of this antenna, has higher requirement to surrounding enviroment;
3. debugging difficulty is large;
4. because high-frequency signal and mutual between low frequency signal from peripheral parts (as battery, loudspeaker, metal shell etc.) disturb different, if for receiving and dispatching high-frequency signal and the antenna for receiving and dispatching low frequency signal is provided separately, can come to arrange the cabling of antenna and feeder line thereof respectively according to the arrangement situation of peripheral devices, good signal transmitting and receiving effect can be reached.
Summary of the invention
The object of this invention is to provide a kind of mobile phone receiving and dispatching multi-band signal.
The mobile phone receiving and dispatching multi-band signal provided by the present invention, comprise baseband chip, radio circuit, first antenna and the second antenna, described first antenna and the second antenna have different working frequency range, described radio circuit one end respectively circuit connect the first antenna with the second antenna and the other end be connected with described baseband chip circuitry phase.
The mobile phone receiving and dispatching multi-band signal provided by the present invention, because the task of multiple frequency range radiofrequency signal transmitting-receiving all no longer born by each antenna as prior art, solving single antenna design in prior art needs antenna to have the defect of large-size, can more effectively utilize mobile phone shell intracorporeal space, handset structure is designed more flexible, be convenient to reduce mobile phone volume, improve the portability of mobile phone.
Accompanying drawing explanation
The electrical block diagram of the mobile phone of the multi-band signal received and dispatched that Fig. 1 provides for the embodiment of the present invention;
The circuit theory diagrams of the mobile phone of the multi-band signal received and dispatched that Fig. 2 provides for the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the mobile phone of the multi-band signal received and dispatched that the present embodiment provides, comprise baseband chip (not shown), radio circuit, first antenna 11 and the second antenna 12, described first antenna 11 and the second antenna 12 have different working frequency range, described radio circuit one end respectively circuit connect the first antenna 11 with the second antenna 12 and the other end be connected with described baseband chip circuitry phase.It will be appreciated by those skilled in the art that, described first antenna 11 and described second antenna 12 have different working frequency range, the task of multiple frequency range radiofrequency signal transmitting-receiving all no longer born by described first antenna 11 and described second antenna 12 as prior art, solving single antenna design in prior art needs antenna to have the defect of large-size, can more effectively utilize mobile phone shell intracorporeal space, handset structure is designed more flexible, be convenient to reduce mobile phone volume, improve the portability of mobile phone.Make described first antenna 11 and the second antenna 12 have different shapes, size and matching network resistance value, can be realized the two there is different working frequency range.
As shown in Figure 1, described radio circuit comprises rf chip 27, power amplifier 25(PA, power amplifier), low noise amplifier 26(LNA, Low Noise Amplifier), duplexer 24 and switch 23; Described power amplifier 25 two ends respectively circuit connect rf chip 27 and duplexer 24, for realize the radiofrequency signal that radio frequency transceiving chip 27 exports power amplification process after launched by the first antenna 11 or the second antenna 12; The two ends of described low noise amplifier 26 connect rf chip 27 and duplexer 24 respectively, send to baseband chip after carrying out signal transacting after the radiofrequency signal for receiving the first antenna 11 or the second antenna 12 carries out low noise amplification by radio frequency chip; Three ports of described switch 23 connect the first antenna 11, second antenna 12 and duplexer 24 respectively, be connected with the switching of described first antenna 11 and the second antenna 12 for realizing duplexer 24, and ensure to transmit and Received signal strength mutually isolated, ensure to receive and launch and can normally work simultaneously.
Described switch 23 is single-pole double-throw switch (SPDT), if model is HAXEWAVE(Chinese prestige) single-pole double-throw switch (SPDT) of M508.
As shown in Figure 2, described switch 23 comprises the first port RF2, the second port GND, the 3rd port RF1, the 4th port VC1, five-port RFC and the 6th port VC2; Described first antenna 11 circuit is connected to described 3rd port RF1; Described second antenna 12 circuit is connected to described first port RF2; Described duplexer 24 circuit is connected to described five-port RFC; Described second port GND ground connection; Described 4th port VC1 and the 6th port VC2 are connected with two BPI port circuitry phases of described baseband chip respectively.It will be appreciated by those skilled in the art that, described baseband chip switches the level height on described 4th port VC1 and the 6th port VC2 by two BPI ports, thus realize the switched conductive of described five-port RFC and described first port (RF2) and the 3rd port RF1, thus realize the switched conductive of the first antenna 11 and the second antenna 12 and described duplexer 24, concrete control logic is as shown in the table:
| VC1 | VC2 | 3rd port (RF1) | First antenna | First port (RF2) | Second antenna |
| 1 | 0 | Conducting | on | Disconnect | off |
| 0 | 1 | Disconnect | off | Conducting | on |
It will be understood by those skilled in the art that the switch 23 of described different model, the magnitude of voltage of its low and high level is different.The model that the present embodiment adopts is HAXEWAVE(Chinese prestige) single-pole double-throw switch (SPDT) 23 of M508, when on its 4th port VC1 or the 6th port VC2, magnitude of voltage is+2.7V to+5V, be high level, logical value is 1; When on its 4th port VC1 or the 6th port VC2, magnitude of voltage is 0V to 0.2V, be low level, logical value is 0.
Described two BPI ports are respectively BPI_BUS2 and BPI_BUS5, and described 4th port VC1 is connected with described BPI_BUS5 circuit; Described 6th port VC2 is connected with described BPI_BUS2 circuit.
Further, the first match circuit 21 is also comprised; Described first match circuit 21 two ends connect described first antenna 11 and described switch 23 respectively.It will be understood by those skilled in the art that described second match circuit 22 is for carrying out impedance matching with described second antenna 12, making its transmitting-receiving frequency range of described second antenna 12 have best radiofrequency signal transmitting-receiving effect.
In order to better realize mating with described first antenna, make described first antenna have best transmitting-receiving effect, described first match circuit 21 is pin network circuit.The resistance value of described first match circuit is 50 ohm.
Described first match circuit 21 comprises electric capacity C11, electric capacity C12, electric capacity C13 and resistance R1; Described electric capacity C12 one end ground connection and the other end connect one end of described resistance R1; Described electric capacity C13 one end ground connection and the other end connect the other end of described resistance R1; Described electric capacity C11 two ends connect the first antenna 11 and resistance R1 respectively.
Distance L11 between described first match circuit 21 and described first antenna 11 is less than the distance L12 between described first match circuit 21 and described switch 23.Closer first antenna of described like this first match circuit, is convenient to realize the debugging to described first antenna.
Further, the second match circuit 22 is also comprised; Described second match circuit 22 two ends connect described second antenna 12 and described switch 23 respectively.It will be understood by those skilled in the art that described second match circuit 22 is for carrying out impedance matching with described second antenna 12, making its transmitting-receiving frequency range of described second antenna 12 have best radiofrequency signal transmitting-receiving effect.
In order to better realize mating with described second antenna, make described second antenna have best transmitting-receiving effect, described second match circuit 22 is pin network circuit.The resistance value of described second match circuit is 50 ohm.
Described second match circuit 22 comprises electric capacity C21, electric capacity C22, electric capacity C23 and resistance R2; Described electric capacity C22 one end ground connection and the other end connect one end of described resistance R2; Described electric capacity C23 one end ground connection and the other end connect the other end of described resistance R2; Described electric capacity C21 two ends connect the first antenna 11 and resistance R2 respectively.
Distance L21 between described second match circuit 22 and described second antenna 12 is less than the distance L22 between described second match circuit 22 and described switch 23.Closer second antenna of described like this second match circuit, is convenient to realize the debugging to described second antenna.
It will be understood by those skilled in the art that this mobile phone can adopt the mode of the standing-wave ratio of debugging two antennas respectively in the design process, realize the impedance matching of two match circuits and respective antenna respectively, thus reach the object optimizing antenna performance.
Described first antenna 11 is for receiving and dispatching DSC1800 frequency range radiofrequency signal unipole antenna.
Described second antenna 12 is the PIFA antenna (Planar Inverted F Antenna, planar inverted-F antenna) for receiving and dispatching GSM900 frequency range radiofrequency signal.
It will be appreciated by those skilled in the art that, the low about 3dbm of power of GSM900 frequency range radiofrequency signal described in the power ratio of described DSC1800 frequency range radiofrequency signal, therefore described first antenna 11 is compared with the second antenna 12, and the signal disturbing between microphone (MIC) or loudspeaker (SPK) is less, but described DSC1800 frequency range radiofrequency signal is owing to having higher frequency, easy and battery produces and disturbs, therefore when designing handset structure, first antenna 11 can be arranged on closer MIC or SPK, but compared with away from the position of battery.
It will be understood by those skilled in the art that described unipole antenna has less volume, but design needs larger clear space.In the present embodiment, be arranged on the bottom position in handset shell due to MIC, and the design space that top has is less, therefore described first antenna 11 is arranged on the bottom position in handset shell; And though mobile phone top has more space, not clear space, cannot arrange unipole antenna, therefore described second antenna 12 is arranged on the tip position in handset shell.It will be understood by those skilled in the art that its position need be arranged according to its signal disturbing and the parameter such as antenna pattern, volume situation when described first antenna 11 and the second antenna 12 are for receiving and dispatching other radiofrequency signals, should by the restriction of the present embodiment.
Further, also comprising the ground current feed circuit be connected with described second antenna 12, for coordinating the field structure of described PIFA antenna, making described second antenna 12 have good antenna performance.
Further, also comprise electric capacity C3, described electric capacity C3 one end connects described 4th port (VC1) and other end ground connection.It will be understood by those skilled in the art that described electric capacity C3 is for playing filter action, preventing signal disturbing from arriving the normal work of described switch 23.
Further, also comprise electric capacity C4, described electric capacity C4 one end connects described 6th port (VC2) and other end ground connection.It will be understood by those skilled in the art that described electric capacity C4 is for playing filter action, preventing signal disturbing from arriving the normal work of described switch 23.In order to better realize mating with described radio circuit, the mobile phone that the present embodiment is provided has best transmitting-receiving effect, the present embodiment also comprises the 3rd match circuit, and described 3rd match circuit one end is connected with described five-port RFC and the other end is connected with described duplexer 24.
Described 3rd match circuit is pin network circuit.
Described 3rd match circuit comprises electric capacity C31, electric capacity C32 and resistance R3, and described electric capacity C31 one end ground connection and the other end connect one end of described resistance R3; Described electric capacity C32 one end ground connection and the other end connect the other end of described resistance R3; The two ends of described resistance R3 are connected with described five-port RFC and described duplexer 24 respectively.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (17)
1. a multi-band signal transmit-receive mobile phone, it is characterized in that: comprise baseband chip, radio circuit, first antenna (11) and the second antenna (12), described first antenna (11) and the second antenna (12) have different working frequency range, described radio circuit one end respectively circuit connect the first antenna (11) with the second antenna (12) and the other end be connected with described baseband chip circuitry phase; Described radio circuit comprises rf chip (27), power amplifier (25), low noise amplifier (26), duplexer (24) and switch (23); Described power amplifier (25) two ends respectively circuit connect rf chip (27) and duplexer (24); The two ends of described low noise amplifier (26) connect rf chip (27) and duplexer (24) respectively, and three ports of described switch (23) connect the first antenna (11), the second antenna (12) and duplexer (24) respectively; Described switch (23) comprises the first port (RF2), the second port (GND), the 3rd port (RF1), the 4th port (VC1), five-port (RFC) and the 6th port (VC2); Described first antenna (11) circuit is connected to described 3rd port (RF1); Described second antenna (12) circuit is connected to described first port (RF2); Described duplexer (24) circuit is connected to described five-port (RFC); Described second port (GND) ground connection; Described 4th port (VC1) and the 6th port (VC2) are connected with two BPI port circuitry phases of described baseband chip respectively.
2. multi-band signal transmit-receive mobile phone as claimed in claim 1, it is characterized in that: described two BPI ports are respectively BPI_BUS2 and BPI_BUS5, described 4th port (VC1) is connected with described BPI_BUS5 circuit; Described 6th port (VC2) is connected with described BPI_BUS2 circuit.
3. multi-band signal transmit-receive mobile phone as claimed in claim 1, is characterized in that: also comprise the first match circuit (21) and the second match circuit (22); Described first match circuit (21) two ends connect described first antenna (11) and described switch (23) respectively; Described second match circuit (22) two ends connect described second antenna (12) and described switch (23) respectively.
4. multi-band signal transmit-receive mobile phone as claimed in claim 3, is characterized in that: described first match circuit (21) is pin network circuit.
5. multi-band signal transmit-receive mobile phone as claimed in claim 4, is characterized in that: described first match circuit (21) comprises electric capacity (C11), electric capacity (C12), electric capacity (C13) and resistance (R1); Described electric capacity (C12) one end ground connection and the other end connect one end of described resistance (R1); Described electric capacity (C13) one end ground connection and the other end connect the other end of described resistance (R1); Described electric capacity (C11) two ends connect the first antenna (11) and resistance (R1) respectively.
6. multi-band signal transmit-receive mobile phone as claimed in claim 3, is characterized in that: the distance (L11) between described first match circuit (21) and described first antenna (11) is less than the distance (L12) between described first match circuit (21) and described switch (23).
7. multi-band signal transmit-receive mobile phone as claimed in claim 3, is characterized in that: the distance (L21) between described second match circuit (22) and described second antenna (12) is less than the distance (L22) between described second match circuit (22) and described switch (23).
8. multi-band signal transmit-receive mobile phone as claimed in claim 3, is characterized in that: described second match circuit (22) is pin network circuit.
9. multi-band signal transmit-receive mobile phone as claimed in claim 8, is characterized in that: described second match circuit (22) comprises electric capacity (C21), electric capacity (C22), electric capacity (C23) and resistance (R2); Described electric capacity (C22) one end ground connection and the other end connect one end of described resistance (R2); Described electric capacity (C23) one end ground connection and the other end connect the other end of described resistance (R2); Described electric capacity (C21) two ends connect the first antenna (11) and resistance (R2) respectively.
10. multi-band signal transmit-receive mobile phone as claimed in any one of claims 1-9 wherein, is characterized in that: described first antenna (11) is for receiving and dispatching DSC1800 frequency range radiofrequency signal unipole antenna.
11. multi-band signal transmit-receive mobile phones as claimed in any one of claims 1-9 wherein, is characterized in that: described second antenna (12) is the PIFA antenna for receiving and dispatching GSM900 frequency range radiofrequency signal.
12. multi-band signal transmit-receive mobile phones as claimed in claim 11, is characterized in that: also comprise the ground current feed circuit be connected with described second antenna (12).
13. multi-band signal transmit-receive mobile phones as claimed in any one of claims 1-9 wherein, is characterized in that: also comprise electric capacity (C3), and described electric capacity (C3) one end connects described 4th port (VC1) and other end ground connection.
14. multi-band signal transmit-receive mobile phones as claimed in any one of claims 1-9 wherein, is characterized in that: also comprise electric capacity (C4), and described electric capacity (C4) one end connects described 6th port (VC2) and other end ground connection.
15. multi-band signal transmit-receive mobile phones as claimed in any one of claims 1-9 wherein, it is characterized in that: also comprise the 3rd match circuit, described 3rd match circuit one end is connected with described five-port (RFC) and the other end is connected with described duplexer (24).
16. multi-band signal transmit-receive mobile phones as claimed in claim 15, is characterized in that: described 3rd match circuit is pin network circuit.
17. multi-band signal transmit-receive mobile phones as claimed in claim 16, it is characterized in that: described 3rd match circuit comprises electric capacity (C31), electric capacity (C32) and resistance (R3), described electric capacity (C31) one end ground connection and the other end connect one end of described resistance (R3); Described electric capacity (C32) one end ground connection and the other end connect the other end of described resistance (R3); The two ends of described resistance (R3) are connected with described five-port (RFC) and described duplexer (24) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210271790.8A CN102801832B (en) | 2012-08-02 | 2012-08-02 | Cell phone capable of receiving and transmitting multi-frequency-band signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210271790.8A CN102801832B (en) | 2012-08-02 | 2012-08-02 | Cell phone capable of receiving and transmitting multi-frequency-band signal |
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| CN102801832A CN102801832A (en) | 2012-11-28 |
| CN102801832B true CN102801832B (en) | 2015-05-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475386A (en) * | 2013-09-25 | 2013-12-25 | 小米科技有限责任公司 | Radio frequency front end terminal and terminal equipment |
| CN103634019A (en) * | 2013-11-08 | 2014-03-12 | 小米科技有限责任公司 | Radio-frequency front end and communication device |
| CN104900984B (en) * | 2014-03-07 | 2018-08-10 | 联想(北京)有限公司 | Antenna assembly, Wearable and the method for antenna assembly to be arranged |
| CN105140657B (en) * | 2015-07-08 | 2019-01-29 | 北京玛施德利科技有限公司 | Mobile terminal antenna with comprehensive frequency range |
| CN106059617B (en) * | 2016-07-15 | 2019-02-01 | 上海捷士太通讯技术有限公司 | A kind of antenna integrated Universal wireless communication module |
| CN106452471B (en) * | 2016-09-29 | 2019-10-11 | 宇龙计算机通信科技(深圳)有限公司 | A kind of GSM radio circuit and the terminal including the circuit |
| CN106954206B (en) * | 2017-04-18 | 2020-02-21 | 深圳铂睿智恒科技有限公司 | Configuration method and device of modem |
| CN108429555A (en) * | 2018-05-08 | 2018-08-21 | 绍兴心越科技有限公司 | A kind of wireless sensor network multi-band remote communication board |
| US20190379130A1 (en) * | 2018-06-06 | 2019-12-12 | Mediatek Inc. | Antenna device used to perform dynamic control for feeding points and radio frequency chain circuit |
| CN109217904A (en) * | 2018-11-20 | 2019-01-15 | 漳州高新区远见产业技术研究有限公司 | A kind of near field communication means |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080007464A1 (en) * | 2006-07-06 | 2008-01-10 | Cho-Kang Hsu | Multi-function antenna apparatus |
| CN202004812U (en) * | 2010-12-01 | 2011-10-05 | 惠州Tcl移动通信有限公司 | Multi-antenna structure of mobile terminal |
| CN102263857A (en) * | 2011-07-12 | 2011-11-30 | 康佳集团股份有限公司 | Shared antenna circuit for mobile terminal |
| CN202759493U (en) * | 2012-08-02 | 2013-02-27 | 上海华勤通讯技术有限公司 | Handset capable of transmitting and receiving multi-band frequency signals |
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