CN103634019A - Radio-frequency front end and communication device - Google Patents
Radio-frequency front end and communication device Download PDFInfo
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- CN103634019A CN103634019A CN201310553610.XA CN201310553610A CN103634019A CN 103634019 A CN103634019 A CN 103634019A CN 201310553610 A CN201310553610 A CN 201310553610A CN 103634019 A CN103634019 A CN 103634019A
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Abstract
The invention discloses a radio-frequency front end and a communication device, which belong to the technical field of wireless communication. The radio-frequency front end comprises an antenna, a modulation demodulation chip and at least two matching circuits, wherein the antenna is provided with at least two feed points; each feed point is connected with the modulation demodulation chip respectively through the different matching circuits. By adopting the radio-frequency front end and the communication device, the size of the antenna can be reduced.
Description
Technical field
The disclosure relates to wireless communication technology field, particularly a kind of radio-frequency front-end and communication equipment.
Background technology
Along with the develop rapidly of wireless communication technology, the mobile terminals such as mobile phone, panel computer, notebook are popularized and application widely fast, become requisite instrument in people's Working Life.In mobile terminal, radio-frequency front-end is important parts, and for the reception of signal, transmitting, modulation, demodulation etc., general radio-frequency front-end comprises the building blocks such as antenna, match circuit, modem chip.Antenna is a kind of very important parts, for reception and the transmission of signal.
The mobile terminal huge for the ease of quantity carries out radio communication, people have marked off a plurality of wireless communication frequency bands in frequency resource, comprise two GSM frequency ranges, a WCDMA frequency range, a CDMA frequency range, three TD-SCDMA frequency ranges and three TD-LTE frequency ranges etc., mobile terminal can carry out independently radio communication in any one wireless communication frequency band.On antenna, be provided with a distributing point, be connected with match circuit, for importing and the derivation of aerial signal.
In realizing process of the present disclosure, inventor finds that correlation technique at least exists following problem:
In order to make antenna can both there is higher antenna performance at more wireless communication frequency band, the method that correlation technique adopts is, by increase the mode of detail in antenna, increase the quantity of the wireless communication frequency band that antenna can support, yet, increase Zhi Jiehui and cause the volume of antenna to increase, thereby can cause the volume of mobile terminal larger.
Summary of the invention
In order to solve the problem of correlation technique, disclosure embodiment provides a kind of radio-frequency front-end and communication equipment.Described technical scheme is as follows:
On the one hand, provide a kind of radio-frequency front-end, described radio-frequency front-end comprises antenna, modem chip and at least two match circuits, wherein:
On described antenna, be provided with at least two distributing points;
Each distributing point is connected with described modem chip by different match circuits respectively.
Optionally, each distributing point is connected with described modem chip by a match circuit respectively.
Optionally, described radio-frequency front-end also comprises selector switch;
Each match circuit is connected with described modem chip by described selector switch;
Described selector switch is for controlling the break-make of circuit between each match circuit and described modem chip.
Optionally, described selector switch, for controlling the break-make of circuit between each match circuit and described modem chip, comprising:
Described selector switch for control a match circuit and be communicated with circuit between described modem chip and other match circuit and described modem chip between circuit all disconnect.
Optionally, described selector switch, for controlling the break-make of circuit between each match circuit and described modem chip, comprising:
Described selector switch, for according to the control signal of the processor transmission of described radio-frequency front-end place communication equipment, is controlled the break-make of circuit between each match circuit and described modem chip.
Optionally, each distributing point is preset with at least one corresponding wireless communication frequency band;
Each distributing point meets following locality condition:
At each distributing point place, in its corresponding wireless communication frequency band, the antenna efficiency of described antenna reaches predetermined threshold value.
Optionally, wireless communication frequency band corresponding to any two distributing points do not exist overlapping.
Optionally, for to there being the distributing point of a plurality of wireless communication frequency bands, a plurality of wireless communication frequency bands of its correspondence are adjacent wireless communication frequency band.
Optionally, the wireless communication frequency band that each distributing point is corresponding is included in the scope of working frequency range of match circuit of its connection.
On the other hand, provide a kind of communication equipment, described communication equipment comprises radio-frequency front-end as above.
Beneficial effects more of the present disclosure can comprise::
In disclosure embodiment, radio-frequency front-end comprises antenna, modem chip, at least two match circuits, is provided with at least two distributing points on antenna, and each distributing point is connected with modem chip by different match circuits respectively.By this scheme, without transmit the signal of all wireless communication frequency bands at a distributing point, each distributing point only need to be supported a small amount of wireless communication frequency band, like this, without increasing antenna detail, only need to increase distributing point quantity, just can increase the quantity of the wireless communication frequency band that antenna can support, thereby, can reduce the volume of antenna.
Should be understood that, it is only exemplary that above general description and details are hereinafter described, and can not limit the disclosure.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the disclosure, forms the application's a part, does not form restriction of the present disclosure.In the accompanying drawings:
Fig. 1 is the exemplary block diagram of the radio-frequency front-end that provides of disclosure embodiment;
Fig. 2 is the exemplary block diagram of the antenna that provides of disclosure embodiment;
Fig. 3 is the exemplary block diagram of the radio-frequency front-end that provides of disclosure embodiment.
By above-mentioned accompanying drawing, the embodiment that the disclosure is clear and definite has been shown, will there is more detailed description hereinafter.These accompanying drawings and text description are not in order to limit the scope of disclosure design by any mode, but by reference to specific embodiment for those skilled in the art illustrate concept of the present disclosure.
Embodiment
For making object of the present disclosure, technical scheme and advantage clearer, below in conjunction with execution mode and accompanying drawing, the disclosure is described in further details.At this, exemplary embodiment of the present disclosure and explanation thereof are used for explaining the disclosure, but not as to restriction of the present disclosure.
Disclosure embodiment provides a kind of outer net is connected to the method and apparatus that parameter arranges, and below in conjunction with accompanying drawing, the disclosure is elaborated.
Embodiment mono-
Disclosure embodiment provides a kind of radio-frequency front-end, and as shown in Figure 1, this radio-frequency front-end comprises antenna, modem chip and at least two match circuits, wherein:
On antenna, be provided with at least two distributing points, each distributing point is connected with modem chip by different match circuits respectively.
In disclosure embodiment, radio-frequency front-end comprises antenna, modem chip, at least two match circuits, is provided with at least two distributing points on antenna, and each distributing point is connected with modem chip by different match circuits respectively.By this scheme, without transmit the signal of all wireless communication frequency bands at a distributing point, each distributing point only need to be supported a small amount of wireless communication frequency band, like this, without increasing antenna detail, only need to increase distributing point quantity, just can increase the quantity of the wireless communication frequency band that antenna can support, thereby, can reduce the volume of antenna.
Embodiment bis-
Disclosure embodiment provides a kind of radio-frequency front-end, below in conjunction with concrete execution mode, the radio-frequency front-end shown in Fig. 1 is described in detail.
This radio-frequency front-end comprises antenna, modem chip and at least two match circuits, wherein: on antenna, be provided with at least two distributing points, each distributing point is connected with modem chip by different match circuits respectively.
Wherein, antenna is the parts that receive and launch for signal, and the structure of antenna and the position of distributing point can be as shown in Figure 2, and match circuit is for regulating the parts of the impedance of antenna, and modem chip is for signal being carried out to the parts of modulation and demodulation processing.Distributing point is on antenna, to connect the point of the holding wire (as microstrip line) that leads to match circuit.
In force, each distributing point connects from different match circuits respectively, and each match circuit is connected with modem chip again.Each distributing point can connect a match circuit, also can connect a plurality of match circuits (selector switch can for by distributing point and one of them match circuit conducting) by selector switch.On circuit between match circuit and modulation-demodulation circuit, can be provided with some conventional radio-frequency devices.Modem chip can be for carrying out independent process to the signal of Different matching circuit respectively, and for example, different match circuits can be connected with the different port of modem chip respectively, and modem chip carries out independent process to the signal of different port respectively.
Optionally, each distributing point is connected with modem chip by a match circuit respectively.Like this, as shown in Figure 1, match circuit and distributing point have just formed relation one to one.
In disclosure embodiment, optional, in radio-frequency front-end, can also comprise selector switch, each match circuit is connected with modem chip by this selector switch, and this selector switch is for controlling the break-make of circuit between each match circuit and modem chip.
In force, selector switch can be arranged on the circuit between each match circuit and modem chip, selector switch can be controlled any one or more match circuits and be communicated with the circuit between modem chip, and the circuit between other match circuit and modem chip disconnects.The mode of selector switch execution control function can have a variety of, for example, selector switch can built-in process chip, and the wireless communication frequency band (as WCDMA frequency range) of selecting according to user in current communication equipment (communication equipment at radio-frequency front-end place), controls the break-make of respective lines.Optionally, selector switch can be connected with the processor of communication equipment, and selector switch, for according to the control signal of the processor transmission of radio-frequency front-end place communication equipment, is controlled the break-make of circuit between each match circuit and modem chip.
Optionally, selector switch for control a match circuit and be communicated with circuit between modem chip and other match circuit and modem chip between circuit all disconnect.
In force, as shown in Figure 3, selector switch can adopt single pole multiple throw (as single-pole double-throw switch (SPDT) etc.), and the port of respectively selecting of single pole multiple throw can be connected with each match circuit respectively, and the public port of single pole multiple throw can be connected with modem chip.On selector switch, can be provided with GPIO(General Purpose Input Output, universal input output) port, for connecting the processor of communication equipment, for the situation of m match circuit, n GPIO port (2 can be set
n>=m), each connects a GPIO control signal wire.
In disclosure embodiment, each distributing point can be preset with at least one corresponding wireless communication frequency band, wherein, the quantity that the corresponding wireless communication frequency band of each distributing point can be set is less than the quantity of the wireless communication frequency band that antenna need to support, each distributing point can meet following locality condition: at each distributing point place, in its corresponding wireless communication frequency band, the antenna efficiency of antenna reaches predetermined threshold value.
Wherein, antenna efficiency is the parameter of reflection distributing point ability, the external transmitting power transmitting of antenna and the ratio of this power while entering antenna feed point that transmits, or the ratio of the received power of antenna feed point place when receiving the power of signal and this reception signal and entering antenna.Predetermined threshold value can arrange arbitrarily according to the actual requirements.Distributing point is on antenna, to connect the point of the holding wire that leads to match circuit, and the position of distributing point can arrange arbitrarily as requested.Because, different in the antenna efficiency at the diverse location place of antenna, so, optional, can be chosen in one or more wireless communication frequency band internal antenna efficiency all higher point as distributing point.Generally, when the wireless communication frequency band that need to support when antenna is more, be difficult to find a distributing point of supporting all wireless communication frequency bands (antenna efficiency in all wireless communication frequency bands can both reach the distributing point of requirement numerical value), so, if only have a distributing point, the detail that need to increase antenna promotes antenna efficiency.Yet, if be provided with a plurality of distributing points on antenna, in all wireless communication frequency bands that need to support at antenna, each distributing point only need to be supported part wireless communication frequency band, be that each distributing point only need to guarantee the antenna efficiency in part wireless communication frequency band, such distributing point relatively easily finds, and corresponding, the quantity of required antenna detail is relatively less.
In force, the default corresponding wireless communication frequency band of each distributing point, it can be the wireless communication frequency band that distributing point need to be supported, the quantity that the corresponding wireless communication frequency band of each distributing point can be set is less than the quantity of the wireless communication frequency band that antenna need to support, and all wireless communication frequency bands that the summation of wireless communication frequency band corresponding to all distributing points need to be supported with antenna are identical.Optionally, wireless communication frequency band corresponding to any two distributing points can be set and not exist overlappingly, the wireless communication frequency band that each distributing point is corresponding is not identical.
Optionally, for to there being the distributing point of a plurality of wireless communication frequency bands, a plurality of wireless communication frequency bands of its correspondence are adjacent wireless communication frequency band.Wherein, two wireless communication frequency bands are adjacent is between them, there is no other wireless communication frequency band of interval.,, between a plurality of wireless communication frequency bands corresponding to certain distributing point, there is not other wireless communication frequency band yet.
Optionally, the wireless communication frequency band that each distributing point is corresponding is included in the scope of working frequency range of match circuit of its connection.
Wherein, match circuit is for regulating the impedance of antenna, by regulating the impedance of antenna can guarantee that radio-frequency front-end has higher transmitting receiving efficiency in certain frequency range, the operating frequency of match circuit, it is a frequency range, based on this match circuit, can guarantee that the transmitting receiving efficiency of radio-frequency front-end in this frequency range reaches certain numerical value requirement.
In force, match circuit for distributing point and its connection, all wireless communication frequency bands that distributing point is corresponding can be set all within the scope of the working frequency range of this match circuit, like this, can guarantee the signal transmitting receiving efficiency of each wireless communication frequency band that this distributing point is corresponding.
In disclosure embodiment, radio-frequency front-end comprises antenna, modem chip, at least two match circuits, is provided with at least two distributing points on antenna, and each distributing point is connected with modem chip by different match circuits respectively.By this scheme, without transmit the signal of all wireless communication frequency bands at a distributing point, each distributing point only need to be supported a small amount of wireless communication frequency band, like this, without increasing antenna detail, only need to increase distributing point quantity, just can increase the quantity of the wireless communication frequency band that antenna can support, thereby, can reduce the volume of antenna.
Embodiment tri-
Disclosure embodiment opens provides a kind of communication equipment, and this communication equipment comprises the radio-frequency front-end as described in above-described embodiment.
Optionally, for radio-frequency front-end, comprise the situation of selector switch, the processor of this communication equipment can with radio-frequency front-end in selector switch be connected, for transmitting control signal to selector switch.
In disclosure embodiment, radio-frequency front-end comprises antenna, modem chip, at least two match circuits, is provided with at least two distributing points on antenna, and each distributing point is connected with modem chip by different match circuits respectively.By this scheme, without transmit the signal of all wireless communication frequency bands at a distributing point, each distributing point only need to be supported a small amount of wireless communication frequency band, like this, without increasing antenna detail, only need to increase distributing point quantity, just can increase the quantity of the wireless communication frequency band that antenna can support, thereby, can reduce the volume of antenna.
In addition, typically, the mobile terminal described in the disclosure can be various hand-held terminal devices, such as mobile phone, personal digital assistant (PDA) etc., and therefore protection range of the present disclosure should not be defined as the mobile terminal of certain particular type.
In addition, according to method of the present disclosure, can also be implemented as the computer program of being carried out by CPU.When this computer program is carried out by CPU, carry out the above-mentioned functions limiting in method of the present disclosure.
In addition, said method step and system unit also can utilize controller and realize for storing the computer readable storage devices of the computer program that makes controller realize above-mentioned steps or Elementary Function.
In addition, should be understood that, computer readable storage devices as herein described (for example, memory) can be volatile memory or nonvolatile memory, or can comprise volatile memory and nonvolatile memory.And nonrestrictive, nonvolatile memory can comprise read-only memory (ROM), programming ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory as an example.Volatile memory can comprise random access memory (RAM), and this RAM can serve as External Cache memory.As an example and nonrestrictive, RAM can obtain in a variety of forms, such as synchronous random access memory (DRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate SDRAM (DDR SDRAM), enhancing SDRAM (ESDRAM), synchronization link DRAM (SLDRAM) and direct RambusRAM (DRRAM).The memory device of disclosed aspect is intended to include but not limited to the memory of these and other suitable type.
Those skilled in the art will also understand is that, in conjunction with the described various illustrative logical blocks of disclosure herein, module, circuit and algorithm steps, may be implemented as electronic hardware, computer software or both combinations.For this interchangeability of hardware and software is clearly described, with regard to the function of various exemplary components, square, module, circuit and step, it has been carried out to general description.This function is implemented as software or is implemented as hardware and depends on concrete application and the design constraint that imposes on whole system.Those skilled in the art can realize described function in every way for every kind of concrete application, but this realization determines should not be interpreted as causing departing from the scope of the present disclosure.
In conjunction with the described various illustrative logical blocks of disclosure herein, module and circuit, can utilize the following parts that are designed to carry out function described here to realize or carry out: general processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete nextport hardware component NextPort or any combination of these parts.General processor can be microprocessor, but alternatively, processor can be any conventional processors, controller, microcontroller or state machine.Processor also may be implemented as the combination of computing equipment, and for example, the combination of DSP and microprocessor, multi-microprocessor, one or more microprocessor are in conjunction with DSP core or any other this configuration.
Step in conjunction with the described method of disclosure herein or algorithm can directly be included in the software module of carrying out in hardware, by processor or in the two combination.Software module can reside in the storage medium of RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, removable dish, CD-ROM or any other form known in the art.Exemplary storage medium is coupled to processor, make processor can be from this storage medium reading information or to this storage medium writing information.In an alternative, described storage medium can be integral to the processor together.Processor and storage medium can reside in ASIC.ASIC can reside in user terminal.In an alternative, processor and storage medium can be used as discrete assembly and reside in user terminal.
In one or more exemplary design, described function can realize in hardware, software, firmware or its combination in any.If realized in software, described function can be transmitted on computer-readable medium or by computer-readable medium as one or more instructions or code storage.Computer-readable medium comprises computer-readable storage medium and communication media, and this communication media comprises and contributes to computer program to be sent to from a position any medium of another position.Storage medium can be can be by any usable medium of universal or special computer access.As an example and nonrestrictive, this computer-readable medium can comprise RAM, ROM, EEPROM, CD-ROM or other optical disc memory apparatus, disk storage device or other magnetic storage apparatus, or can for carry or file layout be instruction or data structure required program code and can be by any other medium of universal or special computer or universal or special processor access.In addition, any connection can suitably be called computer-readable medium.For example, if use coaxial cable, optical fiber cable, twisted-pair feeder, digital subscriber line (DSL) or such as the wireless technology of infrared ray, radio and microwave come from website, server or other remote source send software, above-mentioned coaxial cable, optical fiber cable, twisted-pair feeder, DSL or include the definition at medium such as the wireless technology of infrared first, radio and microwave.As used herein, disk and CD comprise compact disk (CD), laser disk, CD, digital versatile disc (DVD), floppy disk, Blu-ray disc, disk rendering data magnetically conventionally wherein, and cd-rom using laser optics ground rendering data.The combination of foregoing also should be included in the scope of computer-readable medium.
Although disclosed content shows exemplary embodiment of the present disclosure above, it should be noted that under the prerequisite of the scope of the present disclosure that does not deviate from claim restriction, can carry out multiple change and modification.According to the function of the claim to a method of disclosed embodiment described herein, step and/or action, need not carry out with any particular order.In addition, although element of the present disclosure can be with individual formal description or requirement, also it is contemplated that a plurality of, unless be clearly restricted to odd number.
Above-described embodiment; object of the present disclosure, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only embodiment of the present disclosure; and be not used in and limit protection range of the present disclosure; all within spirit of the present disclosure and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present disclosure.
Claims (10)
1. a radio-frequency front-end, is characterized in that, described radio-frequency front-end comprises antenna, modem chip and at least two match circuits, wherein:
On described antenna, be provided with at least two distributing points;
Each distributing point is connected with described modem chip by different match circuits respectively.
2. radio-frequency front-end according to claim 1, is characterized in that, each distributing point is connected with described modem chip by a match circuit respectively.
3. radio-frequency front-end according to claim 1, is characterized in that, described radio-frequency front-end also comprises selector switch;
Each match circuit is connected with described modem chip by described selector switch;
Described selector switch is for controlling the break-make of circuit between each match circuit and described modem chip.
4. radio-frequency front-end according to claim 3, is characterized in that, described selector switch, for controlling the break-make of circuit between each match circuit and described modem chip, comprising:
Described selector switch for control a match circuit and be communicated with circuit between described modem chip and other match circuit and described modem chip between circuit all disconnect.
5. radio-frequency front-end according to claim 3, is characterized in that, described selector switch, for controlling the break-make of circuit between each match circuit and described modem chip, comprising:
Described selector switch, for according to the control signal of the processor transmission of described radio-frequency front-end place communication equipment, is controlled the break-make of circuit between each match circuit and described modem chip.
6. radio-frequency front-end according to claim 1, is characterized in that, each distributing point is preset with at least one corresponding wireless communication frequency band;
Each distributing point meets following locality condition:
At each distributing point place, in its corresponding wireless communication frequency band, the antenna efficiency of described antenna reaches predetermined threshold value.
7. radio-frequency front-end according to claim 6, is characterized in that, wireless communication frequency band corresponding to any two distributing points do not exist overlapping.
8. radio-frequency front-end according to claim 6, is characterized in that, for to there being the distributing point of a plurality of wireless communication frequency bands, a plurality of wireless communication frequency bands of its correspondence are adjacent wireless communication frequency band.
9. radio-frequency front-end according to claim 6, is characterized in that, the wireless communication frequency band that each distributing point is corresponding is included in the scope of working frequency range of match circuit of its connection.
10. a communication equipment, is characterized in that, described communication equipment comprises the radio-frequency front-end as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310553610.XA CN103634019A (en) | 2013-11-08 | 2013-11-08 | Radio-frequency front end and communication device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310553610.XA CN103634019A (en) | 2013-11-08 | 2013-11-08 | Radio-frequency front end and communication device |
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| CN103634019A true CN103634019A (en) | 2014-03-12 |
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| CN201310553610.XA Pending CN103634019A (en) | 2013-11-08 | 2013-11-08 | Radio-frequency front end and communication device |
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| CN109525270A (en) * | 2018-11-23 | 2019-03-26 | 上海庆科信息技术有限公司 | Wiring board and wireless communication module |
| CN111835372A (en) * | 2019-04-18 | 2020-10-27 | 北京小米移动软件有限公司 | Radio frequency circuit and wireless communication equipment |
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Application publication date: 20140312 |