CN109257064A - A kind of double antenna RF front-end module - Google Patents
A kind of double antenna RF front-end module Download PDFInfo
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- CN109257064A CN109257064A CN201811276125.1A CN201811276125A CN109257064A CN 109257064 A CN109257064 A CN 109257064A CN 201811276125 A CN201811276125 A CN 201811276125A CN 109257064 A CN109257064 A CN 109257064A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention belongs to data-link wireless communication technology fields, and in particular to a kind of double antenna RF front-end module based on double antenna operating mode theory structure inside full duplex radio-frequency front-end.Transmission power controls upper and lower antenna by the phase adjustment of phase shifter in the output power of some frequency point in the module, and transmission power is realized by phase measurements mode.And whole frequency points that antenna covers up and down, it is distinguished in the form of high low band by two groups of different cavity body filters, there is very high degree of suppression between the filter of high low band, full duplex work may be implemented.It can be ensured in the state of antenna port open circuit in the high power amplitude limiter of receiving portion, when high-power signal is totally reflected, can protect reception circuit, high-power signal is reflexed into load port.Limiter protects receiving channel component for preventing high-power signal from entering receives link.
Description
Technical field
The invention belongs to data-link wireless communication technology fields, and in particular to one kind is based on double inside full duplex radio-frequency front-end
The double antenna RF front-end module of antenna operating mode theory structure.
Background technique
In data-link wireless communication link, it is light to play act foot as essential component part for RF front-end module
The effect of weight.In the design process of RF front-end module, double antenna operating mode is also rather common.Two days can generally be used
The mode of line switching realizes also there is double antenna certainly while the working method of radiation and reception signal.According to half-duplex operation with
The mode of full-duplex communication is different, and the circuit design method of RF front-end module is also not quite similar.Half duplex mode of communication is to receive
Photos and sending messages time-sharing work, not by time restriction, i.e. receiving and transmitting signal can carry out full-duplex communication mode simultaneously, and not generate mutually dry
It disturbs.
Common double antenna operating mode are as follows:
1, switching selects antenna, as shown in Figure 1.Wherein, signal is amplified by driving amplifier 3, final amplifier 4
Afterwards, access switch 13 is protected by the matching of isolator 5, is switched to different antennas 9 by discrete cavity body filter 14 respectively,
Complete signal radiation.Although this double antenna design branch can share, can only an Antenna Operation in antenna 9, do not have
It is standby to work at the same time condition, therefore can not realize full-duplex mode.
2, constant power radiates two antennas, i.e., so-called power averaging distribution, as shown in Figure 2.Wherein, signal passes through promotion
After amplifier 3, final amplifier 4 and isolator 5, two antennas of antenna 9 are averagely allocated to by high-power power splitter 15, by
In the Insertion Loss and power capacity of power splitter, radio frequency amplification link efficiency will be greatly reduced, and double antenna radiation level can drop
It is low, and can not achieve full duplex operating mode.
3, two paths of signals individually exports emission mode.
Conventional double antenna radio-frequency front-end is designed, double antenna is respectively two-way independent structure, although circuit is relatively simple
It is single, but have a single function, it can not achieve full duplex operating mode.
Summary of the invention
(1) technical problems to be solved
The present invention proposes a kind of double antenna RF front-end module, to solve how to realize the full duplex work under double antenna mode
The technical issues of operation mode, i.e. whichever antenna, emit signal, do not influence real-time information and receive.
(2) technical solution
In order to solve the above-mentioned technical problem, the present invention proposes a kind of double antenna RF front-end module, the RF front-end module
Including power splitter, phase shifter, driving amplifier, final amplifier, isolator, high-power electric bridge, circulator, cavity body filter,
Antenna, limiter, low-noise amplifier and temperature compensation attenuator；Wherein, RF front-end module includes the first branch and second branch
Two paths of signals, two paths of signals are coupled into different branch at high-power electric bridge；The radiofrequency signal for inputting the first branch passes through function point
Device enters two-way difference amplifying circuit, controls the road first branch Zhong Mei signal phase by phase shifter, guarantees that signal successively passes through
After driving amplifier, final amplifier, isolator and high-power electric bridge, synthesis maximum power enters the first branch or second branch
The forward end of circulator pass through the output power levels of antenna port after cavity body filter frequency-selecting；Input second
The radiofrequency signal on road guarantees that the output power levels of antenna are maximum after the amplification of same link；Receives link is to pass through day
Line receives the signal being radiated in the air, into the common end of cavity body filter, enters clipping by the reverse link of circulator
Device, then successively the signal received is amplified and is given to radio frequency reception channel by low-noise amplifier and temperature compensation attenuator.
(3) beneficial effect
Double antenna RF front-end module proposed by the present invention, transmission power are controlled up and down by the phase adjustment of phase shifter
Antenna in the output power of some frequency point, realized by phase measurements mode by transmission power.And all frequencies that antenna covers up and down
Point is distinguished in the form of high low band by two groups of different cavity body filters, is had between the filter of high low band
Full duplex work may be implemented in very high degree of suppression.It can ensure in the high power amplitude limiter of receiving portion and be opened in antenna port
In the state of road, when high-power signal is totally reflected, it can protect reception circuit, high-power signal reflexed into load port.Limit
Width device protects receiving channel component for preventing high-power signal from entering receives link.
It is knob by electric bridge combination success rate mode based on the present invention changes the phase of two-way unlike signal by phase shifter
Band realizes radio-frequency front-end double antenna operating mode.The advantages of mode, is: when bookbinding parameter works in upper antenna or lower day
When ray mode, output power can be synthesized by the different amplifier of two-way and be realized, high low band is amplified using different links,
And receives link can choose and be received for the different-waveband information under a certain antenna mode.In addition, no matter day line options fill
Whether ordering, double antenna default mode is reception signal, thus can real-time reception and processing relevant information more.
Beneficial effect is mainly reflected in following several respects:
1, the present invention is realized using phase shifter and electric bridge power suitable method, will not only drop link gain, can also have
Effect improves output power；
2, the single antenna that the present invention uses is divided into height band form, has not only solved the problems, such as full duplex operating mode, but also
Interference free performance can be improved；
3, low noise amplification mode built in the receives link limiter that the present invention uses, both can be improved tolerance power, protect
Receives link component is protected, receives link performance can also be improved with noise-reduction coefficient.
Detailed description of the invention
Fig. 1 is ordinary tap switching selection antenna mode double antenna RF front-end module schematic diagram；
Fig. 2 is ordinary power mean allocation mode double antenna RF front-end module schematic diagram；
Fig. 3 is the double antenna RF front-end module schematic block circuit diagram of the embodiment of the present invention.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to tool of the invention
Body embodiment is described in further detail.
The present embodiment proposes a kind of double antenna RF front-end module, and circuit theory is as shown in Figure 3.The RF front-end module
Including power splitter 1, phase shifter 2, driving amplifier 3, final amplifier 4, isolator 5, high-power electric bridge 6, circulator 7, cavity
Filter 8, antenna 9, limiter 10, low-noise amplifier 11 and temperature compensation attenuator 12.
The RF front-end module mainly includes branch 1 and 2 two paths of signals of branch, two paths of signals coupling at high-power electric bridge 6
Synthesize different branch.The radiofrequency signal for inputting branch 1 enters two-way difference amplifying circuit by power splitter 1, is controlled by phase shifter 2
1 road Zhong Mei signal phase of branch processed, guarantee signal successively pass through driving amplifier 3, final amplifier 4, isolator 5 with it is high-power
After electric bridge 6, the forward end that maximum power enters the circulator 7 of branch 1 or branch 2 can be synthesized, is selected using cavity body filter 8
After frequency, pass through the output power levels of 9 port of antenna；The radiofrequency signal of branch 2 is inputted after the amplification of same link, it can also
Guarantee that the output power levels of antenna 9 are maximum.Receives link is the signal being radiated in the air to be received by antenna 9, into chamber
The common end of fluid filter 8 enters limiter 10 by the reverse link of circulator 7, then successively passes through low-noise amplifier 11
The signal received is amplified with temperature compensation attenuator 12 and is sent to radio frequency reception channel.On the one hand receives link will ensure antenna 9
The reflection of port open high-power signal will not be burnt, and also to ensure effectively can amplify to low noise the useful signal received.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (1)
1. a kind of double antenna RF front-end module, which is characterized in that the RF front-end module includes power splitter, phase shifter, pushes away
Dynamic amplifier, final amplifier, isolator, high-power electric bridge, circulator, cavity body filter, antenna, limiter, low noise are put
Big device and temperature compensation attenuator；Wherein, the RF front-end module includes the first branch and second branch two paths of signals, two paths of signals
Different branch is coupled at high-power electric bridge；The radiofrequency signal for inputting the first branch enters two-way difference by power splitter
Amplifying circuit controls the road first branch Zhong Mei signal phase by phase shifter, guarantees that signal successively passes through driving amplifier, final stage
After amplifier, isolator and high-power electric bridge, synthesis maximum power enters the forward direction of the circulator of the first branch or second branch
End, after cavity body filter frequency-selecting, passes through the output power levels of antenna port；Input the radio frequency letter of the second branch
Number after the amplification of same link, guarantee that the output power levels of antenna are maximum；Receives link is to receive sky by antenna
In the signal that is radiated limiter is entered by the reverse link of circulator, then successively pass through into the common end of cavity body filter
It crosses low-noise amplifier and the signal received is amplified and sent to radio frequency reception channel by temperature compensation attenuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276125.1A CN109257064A (en) | 2018-10-30 | 2018-10-30 | A kind of double antenna RF front-end module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811276125.1A CN109257064A (en) | 2018-10-30 | 2018-10-30 | A kind of double antenna RF front-end module |
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| CN109257064A true CN109257064A (en) | 2019-01-22 |
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| CN201811276125.1A Pending CN109257064A (en) | 2018-10-30 | 2018-10-30 | A kind of double antenna RF front-end module |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166063A (en) * | 2019-05-17 | 2019-08-23 | 中国工程物理研究院电子工程研究所 | A kind of radio-frequency front-end spread spectrum and de-spread spectrum processing method based on amplifier drain modulation effect |
| CN110708023A (en) * | 2019-09-30 | 2020-01-17 | 南京微通电子技术有限公司 | High-power ultra-bandwidth power amplifier |
| CN111130587A (en) * | 2019-12-27 | 2020-05-08 | 上海大际电子科技有限公司 | Novel SC frequency channel broadband TR subassembly |
| CN114759940A (en) * | 2022-04-11 | 2022-07-15 | 无锡华睿芯微电子科技有限公司 | Front-end equipment for multichannel receiving and transmitting of X-band radio-frequency signals |
| CN115051716A (en) * | 2021-03-09 | 2022-09-13 | 诺思(天津)微***有限责任公司 | Multiplexer and communication device |
| CN115865125A (en) * | 2023-03-01 | 2023-03-28 | 成都九洲迪飞科技有限责任公司 | Dual-channel transceiver unit |
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| CN103780280A (en) * | 2014-02-27 | 2014-05-07 | 华为技术有限公司 | Radio frequency path |
| CN106100648A (en) * | 2016-07-29 | 2016-11-09 | 北京慧清科技有限公司 | Two-band double antenna receiving and transmitting front end Circuits System |
| US20170257152A1 (en) * | 2016-03-03 | 2017-09-07 | Tho Le-Ngoc | System and method for self-interference suppression structure |
| CN107146956A (en) * | 2016-03-01 | 2017-09-08 | 南宁富桂精密工业有限公司 | Antenna element and MIMO antenna system using codebook |
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| CN101888252A (en) * | 2010-04-20 | 2010-11-17 | 宁波成电泰克电子信息技术发展有限公司 | Method and system for improving dynamic range in RF system |
| CN103780280A (en) * | 2014-02-27 | 2014-05-07 | 华为技术有限公司 | Radio frequency path |
| CN107146956A (en) * | 2016-03-01 | 2017-09-08 | 南宁富桂精密工业有限公司 | Antenna element and MIMO antenna system using codebook |
| US20170257152A1 (en) * | 2016-03-03 | 2017-09-07 | Tho Le-Ngoc | System and method for self-interference suppression structure |
| CN106100648A (en) * | 2016-07-29 | 2016-11-09 | 北京慧清科技有限公司 | Two-band double antenna receiving and transmitting front end Circuits System |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166063A (en) * | 2019-05-17 | 2019-08-23 | 中国工程物理研究院电子工程研究所 | A kind of radio-frequency front-end spread spectrum and de-spread spectrum processing method based on amplifier drain modulation effect |
| CN110708023A (en) * | 2019-09-30 | 2020-01-17 | 南京微通电子技术有限公司 | High-power ultra-bandwidth power amplifier |
| CN110708023B (en) * | 2019-09-30 | 2023-06-09 | 南京微通电子技术有限公司 | High-power ultra-bandwidth power amplifier |
| CN111130587A (en) * | 2019-12-27 | 2020-05-08 | 上海大际电子科技有限公司 | Novel SC frequency channel broadband TR subassembly |
| CN115051716A (en) * | 2021-03-09 | 2022-09-13 | 诺思(天津)微***有限责任公司 | Multiplexer and communication device |
| CN115051716B (en) * | 2021-03-09 | 2023-11-28 | 诺思(天津)微***有限责任公司 | Multiplexer and communication device |
| CN114759940A (en) * | 2022-04-11 | 2022-07-15 | 无锡华睿芯微电子科技有限公司 | Front-end equipment for multichannel receiving and transmitting of X-band radio-frequency signals |
| CN114759940B (en) * | 2022-04-11 | 2023-04-11 | 无锡华睿芯微电子科技有限公司 | Front-end equipment for multichannel receiving and transmitting of X-band radio-frequency signals |
| CN115865125A (en) * | 2023-03-01 | 2023-03-28 | 成都九洲迪飞科技有限责任公司 | Dual-channel transceiver unit |
| CN115865125B (en) * | 2023-03-01 | 2023-06-30 | 成都九洲迪飞科技有限责任公司 | Dual-channel receiving and transmitting unit |
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Application publication date: 20190122 |