CN110830071A - Multi-antenna radio frequency front-end circuit - Google Patents
Multi-antenna radio frequency front-end circuit Download PDFInfo
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- CN110830071A CN110830071A CN201911100103.4A CN201911100103A CN110830071A CN 110830071 A CN110830071 A CN 110830071A CN 201911100103 A CN201911100103 A CN 201911100103A CN 110830071 A CN110830071 A CN 110830071A
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- antenna
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- throw switch
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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
Abstract
The invention discloses a multi-antenna radio frequency front-end circuit, which comprises: the system comprises a radio frequency signal processing link, a single-pole multi-throw switch and a plurality of paths of parallel transmission links, wherein each path of transmission link comprises a final power amplifier and an antenna, and each antenna corresponds to a respective independent receiving channel; after radio frequency signal processing, switching to a final power amplifier of different transmitting links through a single-pole multi-throw switch, and radiating the amplified signal through an antenna; and the antenna in the emission chain which is not switched and gated by the single-pole multi-throw switch receives the signal and receives the signal through the corresponding independent receiving channel. The invention can receive multi-direction information while radiating signals, realizes parallel signal processing, solves related information and provides a real-time hardware platform for data distribution.
Description
Technical Field
The invention belongs to the related technical field of radio frequency front-end circuit design in a data link wireless communication link, and relates to a multi-antenna radio frequency front-end circuit which has a one-transmitting multi-receiving function.
Background
In a data link communication link, a radio frequency front end module mainly amplifies small signal power to a large signal and then radiates the large signal through an antenna, and small signals received by the antenna can be amplified through low noise and sent to a baseband for information processing. In the design process of the radio frequency front-end module, a multi-antenna working mode is quite common, and according to the task requirement of the whole machine, a working mode that a plurality of antennas simultaneously transmit and receive is generally adopted, namely, each antenna realizes a half-duplex or full-duplex working mode. The half-duplex communication mode is used for receiving and sending information in a time-sharing mode, and the full-duplex communication mode is not limited by time, namely, the receiving and sending of signals can be carried out simultaneously and do not interfere with each other. Common multi-antenna operating modes are: 1. equal power, simultaneous radiation of multiple antennas, so-called power averaging; 2. multiple signals output separately in a transmission mode, and so on.
Disclosure of Invention
Objects of the invention
The purpose of the invention is: aiming at the defects of the common working mode of the multi-antenna radio frequency front end, the multi-antenna radio frequency front end circuit is provided, and the half-duplex working mode under the multi-antenna mode is completed, namely when the antenna signal is transmitted, the antenna cannot be received, but other antennas can realize the real-time receiving function.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a multi-antenna rf front-end circuit, which includes: the circuit comprises a radio frequency signal input end 1, a first isolator 2, a first temperature compensator 3, a push amplifier 4, a first filter 5, a single-pole multi-throw switch 6 and a plurality of parallel transmission links, wherein each transmission link comprises a final power amplifier 7 and an antenna 10, and each antenna 10 corresponds to a respective independent receiving channel; radio frequency signals are input through a radio frequency signal input end 1, are matched with the input end through a first isolator 2, enter a first filter 5 after passing through a first temperature compensation attenuator 3 and a push amplifier 4 and initially filter a communication band unexpected noise signal amplified by a gain of a front-stage channel, and are switched to a final power amplifier 7 of different transmitting links through a single-pole multi-throw switch 6, and the amplified signals are radiated out through an antenna 10; the single-pole multi-throw switch 6 receives signals through the antenna in the non-switching gated transmitting chain and receives the signals through the corresponding independent receiving channel.
Wherein each of the transmit chains further comprises: and a second filter 9, wherein the signal amplified by the final power amplifier 7 is filtered by the second filter 9 and radiated by an antenna 10.
Wherein, a double-section circulator 8 is also arranged between the final power amplifier 7 and the second filter 9, and the double-section circulator 8 is communicated with an antenna receiving channel.
Wherein each of the antenna receiving channels comprises: the signal received by the antenna 10 passes through the second filter 9, enters the amplitude limiter 11 through the two-section circulator 8, passes through the low noise amplifier 12, the second temperature compensator 13 and the second isolator 14, and is output to the received signal output end 15 to be processed by the channel information.
When the single-pole multi-throw switch 6 gates a certain transmission link to transmit signals, other antennas can receive the signals simultaneously.
(III) advantageous effects
According to the multi-antenna radio frequency front-end circuit provided by the technical scheme, the transmission signal is switched to different antennas by switching the switch at the last front stage, and the signal can be radiated outwards in a time-sharing manner when the whole machine works; relative to the transmitting antenna, other antennas can simultaneously receive multidirectional information, and data chain networking communication can be completed; the advantages of this mode are: while radiating signals, the multi-directional information can be received, parallel signal processing is realized, related information is resolved, and a real-time hardware platform is provided for data distribution.
Drawings
Fig. 1 is a schematic block diagram of a novel multi-antenna rf front-end circuit according to the present invention.
Detailed Description
In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The invention designs a brand-new multi-antenna radio frequency front-end circuit, wherein the transmitting power is switched to different final-stage tubes through a final-stage switch, amplified by the final-stage power and then output to an antenna for radiation; each antenna is provided with an independent receiving channel, so that when one antenna radiates signals outwards, although the receiving channel corresponding to the antenna is blocked by high-power signals, other receiving channels can receive signals normally.
Referring to fig. 1, a schematic diagram of a multi-antenna rf front-end circuit of the present invention is shown, and the circuit includes: the circuit comprises a radio frequency signal input end 1, a first isolator 2, a first temperature compensator 3, a push amplifier 4, a first filter 5, a single-pole multi-throw switch 6 and a plurality of parallel transmission links, wherein each transmission link comprises a final power amplifier 7 and an antenna 10, and each antenna 10 corresponds to a respective independent receiving channel; radio frequency signals are input through a radio frequency signal input end 1, are matched with the input end through a first isolator 2, enter a first filter 5 after passing through a first temperature compensation attenuator 3 and a push amplifier 4 and initially filter a communication band unexpected noise signal amplified by a gain of a front-stage channel, and are switched to a final power amplifier 7 of different transmitting links through a single-pole multi-throw switch 6, and the amplified signals are radiated out through an antenna 10; the single-pole multi-throw switch 6 receives signals through the antenna in the non-switching gated transmitting chain and receives the signals through the corresponding independent receiving channel.
Each transmission chain further comprises: and a second filter 9, wherein the signal amplified by the final power amplifier 7 is filtered by the second filter 9 and radiated by an antenna 10.
A double-section circulator 8 is also arranged between the final power amplifier 7 and the second filter 9, and the double-section circulator 8 is communicated with an antenna receiving channel.
The antenna reception path includes: the signal received by the antenna 10 passes through the second filter 9, enters the amplitude limiter 11 through the two-section circulator 8, passes through the low noise amplifier 12, the second temperature compensator 13 and the second isolator 14, and is output to the received signal output end 15 to be processed by the channel information.
When a single-pole multi-throw switch 6 gates a certain transmission link to transmit signals, other paths can receive signals simultaneously.
The single-pole multi-throw switch 6 is positioned at the output end of the push power amplifier 5, the signal power is not large, therefore, the switch has a large space on the model selection, and the switching speed of the switch can reach nanosecond level due to small power, and the switch has fast switching capability. Each antenna is respectively provided with a receiving channel, when any one antenna radiates signals outwards, other multi-path antennas can simultaneously receive signals from different directions, but the radiating antenna cannot receive the signals.
The scheme of the invention adopts a mode of switching the last stage tube to realize power radiation and time-sharing work, and can effectively disperse the heat consumption of the module; while any single antenna radiates signals, other antennas can receive the signals in real time, networking communication of the data link is achieved, and working efficiency of the data link processor is improved; the last-stage switch can adopt a low-power switch, so that the switching noise in a channel is reduced compared with a high-power switch while the switching speed is improved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. A multi-antenna rf front-end circuit, comprising: the radio frequency signal transmission system comprises a radio frequency signal input end 1, a first isolator (2), a first temperature compensator (3), a push amplifier (4), a first filter (5), a single-pole multi-throw switch (6) and a plurality of transmission links connected in parallel, wherein each transmission link comprises a final power amplifier (7) and an antenna (10), and each antenna (10) corresponds to a respective independent receiving channel; radio-frequency signals are input through a radio-frequency signal input end (1), are matched with the input end through a first isolator (2), enter a first filter (5) after passing through a first temperature compensation attenuator (3) and a push amplifier (4) and primarily filter bottom noise signals with unexpected communication frequency bands amplified by gain of a front-stage channel, are switched to final power amplifiers (7) of different transmitting links through a single-pole multi-throw switch (6), and the amplified signals are radiated out through an antenna (10); the single-pole multi-throw switch (6) receives signals through antennas in the unswitched and gated transmitting chain and receives the signals through the corresponding independent receiving channels.
2. The multi-antenna radio frequency front-end circuit of claim 1, wherein each of the transmit chains further comprises: and the second filter (9), the signal amplified by the final power amplifier (7) is filtered by the second filter (9) and radiated by the antenna (10).
3. The multi-antenna rf front-end circuit according to claim 2, wherein a double-section circulator (8) is further disposed between the final power amplifier (7) and the second filter (9), the double-section circulator (8) communicating with the antenna receiving channel.
4. The multi-antenna rf front-end circuit of claim 3, wherein each of the antenna receive channels comprises: the device comprises an amplitude limiter (11), a low-noise amplifier (12), a second temperature compensator (13) and a second isolator (14), wherein signals received by an antenna (10) pass through a second filter (9), enter the amplitude limiter (11) through a double-section circulator (8), pass through the low-noise amplifier (12), the second temperature compensator (13) and the second isolator (14), and are output to a received signal output end (15) for channel information processing.
5. The multi-antenna radio frequency front-end circuit according to claim 4, wherein when the single-pole multi-throw switch (6) gates one transmission link to transmit signals, other antennas can receive signals simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911100103.4A CN110830071A (en) | 2019-11-12 | 2019-11-12 | Multi-antenna radio frequency front-end circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911100103.4A CN110830071A (en) | 2019-11-12 | 2019-11-12 | Multi-antenna radio frequency front-end circuit |
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| CN110830071A true CN110830071A (en) | 2020-02-21 |
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| CN201911100103.4A Pending CN110830071A (en) | 2019-11-12 | 2019-11-12 | Multi-antenna radio frequency front-end circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800147A (en) * | 2020-05-29 | 2020-10-20 | 深圳市豪恩声学股份有限公司 | Radio frequency transmitting device and earphone |
| CN114628919A (en) * | 2022-03-11 | 2022-06-14 | 上海旷通科技有限公司 | 5G active antenna assembly |
| 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 |
| WO2022166653A1 (en) * | 2021-02-07 | 2022-08-11 | 锐石创芯(深圳)科技股份有限公司 | Radio frequency front-end module and antenna apparatus |
| CN115378448A (en) * | 2022-08-26 | 2022-11-22 | 天津津航计算技术研究所 | Cross-beam switching system and method for multi-channel receiver |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111800147A (en) * | 2020-05-29 | 2020-10-20 | 深圳市豪恩声学股份有限公司 | Radio frequency transmitting device and earphone |
| WO2022166653A1 (en) * | 2021-02-07 | 2022-08-11 | 锐石创芯(深圳)科技股份有限公司 | Radio frequency front-end module and antenna apparatus |
| CN114628919A (en) * | 2022-03-11 | 2022-06-14 | 上海旷通科技有限公司 | 5G active antenna assembly |
| CN114628919B (en) * | 2022-03-11 | 2023-08-29 | 上海旷通科技有限公司 | 5G active antenna assembly |
| 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 |
| CN115378448A (en) * | 2022-08-26 | 2022-11-22 | 天津津航计算技术研究所 | Cross-beam switching system and method for multi-channel receiver |
| CN115378448B (en) * | 2022-08-26 | 2023-06-30 | 天津津航计算技术研究所 | Cross-beam switching system and method for multichannel receiver |
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