CN103546189A - Radio-frequency front end circuit and system - Google Patents
Radio-frequency front end circuit and system Download PDFInfo
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- CN103546189A CN103546189A CN201310572197.1A CN201310572197A CN103546189A CN 103546189 A CN103546189 A CN 103546189A CN 201310572197 A CN201310572197 A CN 201310572197A CN 103546189 A CN103546189 A CN 103546189A
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- radio
- diverter switch
- power amplifier
- frequency
- signal transceiver
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Abstract
The invention discloses a radio-frequency front end circuit and system. The radio-frequency front end circuit comprises a diverter switch, an attenuator, a filter, a power amplification device, a transmitting antenna, a low-noise amplifier and a receiving antenna, wherein the attenuator and the filter are respectively connected with the diverter switch, the power amplification device is connected with the attenuator, the transmitting antenna is connected with the power amplification device, the low-noise amplifier is connected with the filter, and the receiving antenna is connected with the low-noise amplifier. By the adoption of the radio-frequency front end circuit and system, due to the fact that a diverter switch used for controlling the antennas to transmit or receive a wireless radio-frequency signal is not required to be arranged, noise introduced by the diverter switch and unnecessary attenuation can be eliminated, and communication quality of both wireless communication sides is improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of radio-frequency (RF) front-end circuit and system.
Background technology
In wireless communication system, radio-frequency (RF) front-end circuit generally all can be set the radio frequency signal that is about to send or the radio frequency signal of reception are amplified, so that radio communication both sides have good communication quality.
Wherein, for the TDD wireless communication system of extensive use, as shown in Figure 2, visible emission link 11 shares an antenna 13 with receiver 12 to the structure of its radio-frequency (RF) front-end circuit; Wherein, the second diverter switch 14 can control antenna 13 transmittings or reception radio frequency signal.Its specific works process is as follows:
When the second diverter switch 13 is connected with transmitting chain 11, will disconnect and being connected of receiver 12, now antenna 13 will be launched radio frequency signal; In like manner, when the second diverter switch 14 is connected with receiver 12, will disconnects and send being connected of link 11, now antenna 13 will receive radio frequency signal.Due in real work, the radio frequency signal of reception or the radio frequency signal of transmission all transmit by the second diverter switch 14, and this will certainly introduce some unnecessary noises and unnecessary decay, thereby do not utilize radio communication both sides' communication.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of radio-frequency (RF) front-end circuit and system, to eliminate noise that the second diverter switch introduced and unnecessary decay, thereby improve radio communication both sides' communication quality.
For achieving the above object, the embodiment of the present invention provides following technical scheme:
, comprising:
Diverter switch;
The attenuator and the filter that are connected with described diverter switch respectively;
The power amplifier device being connected with described attenuator;
The transmitting antenna being connected with described power amplifier device;
The low noise amplifier being connected with described filter;
The reception antenna being connected with described low noise amplifier.
Preferably, described power amplifier device comprises:
The first power divider being connected with described attenuator;
The first power amplifier and the second power amplifier that are connected with described the first power divider respectively;
One end is connected with the second power amplifier with described the first power amplifier respectively, the power combiner that the other end is connected with described transmitting antenna.
Preferably, described filter comprises band pass filter.
Preferably, described diverter switch comprises radio frequency converting switch.
, comprising:
Radio-frequency (RF) front-end circuit as described in claim 1-4 any one and wireless signal transceiver;
Wherein, described wireless signal transceiver is connected with the diverter switch in described radio-frequency (RF) front-end circuit.
Preferably, described wireless signal transceiver comprises wireless router.
Preferably, described wireless signal transceiver comprises wireless network card.
Preferably, described wireless signal transceiver comprises wireless bridge.
Preferably, described wireless signal transceiver comprises radio network gateway.
Preferably, described system also comprises:
The second power divider being connected with wireless signal transceiver with described diverter switch respectively.
From above-mentioned technical scheme, can find out, in embodiments of the present invention, for the transmitting chain being comprised of attenuator and power amplifier device arranges a transmitting antenna, for launching radio frequency signal; And be that the receiver being comprised of filter and low noise amplifier also arranges a reception antenna, for receiving radio frequency signal.Therefore, in radio-frequency (RF) front-end circuit in the present invention and system, all without being set, a diverter switch for control antenna, launches or reception radio frequency signal, therefore can eliminate the noise introduced by this diverter switch and unnecessary decay, thereby improve radio communication both sides' communication quality.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the module map of radio-frequency (RF) front-end circuit of the prior art;
The module map of the radio-frequency (RF) front-end circuit that Fig. 2 provides for the embodiment of the present invention;
The another module map of the radio-frequency (RF) front-end circuit that Fig. 3 provides for the embodiment of the present invention;
One module map of the radio-frequency front-end system that Fig. 4 provides for the embodiment of the present invention;
The another module map of the radio-frequency front-end system that Fig. 5 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present embodiment part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of protection of the present invention.
A kind of structure that the invention discloses radio-frequency (RF) front-end circuit, as shown in Figure 2, comprising:
Concrete, diverter switch 21 can be radio frequency converting switch;
The attenuator 22 being connected with diverter switch 21 respectively and filter 23;
Concrete, filter 23 can be band pass filter;
The power amplifier device 24 being connected with attenuator 22;
The transmitting antenna 25 being connected with power amplifier device 24;
The low noise amplifier 26 being connected with filter 23;
The reception antenna 27 being connected with low noise amplifier 26;
Therefore, in embodiments of the present invention, for the transmitting chain being comprised of attenuator 22 and power amplifier device 24 arranges a transmitting antenna 25, for launching radio frequency signal; And be that the receiver being comprised of filter 23 and low noise amplifier 26 also arranges a reception antenna 27, for receiving radio frequency signal.Therefore, in radio-frequency (RF) front-end circuit in the present invention, without a diverter switch being set for control antenna transmitting or receiving radio frequency signal, therefore can eliminate the noise that this diverter switch is introduced, thereby improve radio communication both sides' communication quality.In addition, due to without above-mentioned diverter switch is set, also can save the energy consumption of radio-frequency (RF) front-end circuit and the power output of increasing power amplifier.
In other embodiment of the present invention, as shown in Figure 3, the power amplifier device 24 in above-mentioned all embodiment can comprise:
The first power divider 31 being connected with attenuator 22;
The first power amplifier 32 being connected with the first power divider 31 respectively and the second power amplifier 33;
One end is connected with the second power amplifier 33 with the first power amplifier 32 respectively, the power combiner 34 that the other end is connected with transmitting antenna 25.
The invention also discloses a kind of radio-frequency front-end system, as shown in Figure 4, comprising:
Above-mentioned radio-frequency (RF) front-end circuit 41 and wireless signal transceiver 42;
Wherein, wireless signal transceiver 42 is connected with the diverter switch 21 in radio-frequency (RF) front-end circuit 41.
Concrete, wireless signal transceiver 42 can comprise wireless router, wireless network card, wireless bridge and radio network gateway etc.
Therefore above-mentioned radio-frequency front-end system, also, without a diverter switch being set for control antenna transmitting or receiving radio frequency signal, therefore can eliminate the noise that this diverter switch is introduced, thereby improve radio communication both sides' communication quality.
In other embodiment of the present invention, the system in above-mentioned all embodiment, as shown in Figure 5, also can comprise:
The second power divider 43 being connected with wireless signal transceiver 42 with diverter switch 21 respectively.
Wherein, the radio frequency signal that the second power divider 43 can be inputted wireless signal transceiver 42 is divided into two-way ，Yi road and is sent to diverter switch 21, and another road can be sent to wave detector.
Therefore, by said system, add the second power divider 43, can carry out detection to the radio frequency signal of input.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a radio-frequency (RF) front-end circuit, is characterized in that, comprising:
Diverter switch;
The attenuator and the filter that are connected with described diverter switch respectively;
The power amplifier device being connected with described attenuator;
The transmitting antenna being connected with described power amplifier device;
The low noise amplifier being connected with described filter;
The reception antenna being connected with described low noise amplifier.
2. circuit according to claim 1, is characterized in that, described power amplifier device comprises:
The first power divider being connected with described attenuator;
The first power amplifier and the second power amplifier that are connected with described the first power divider respectively;
One end is connected with the second power amplifier with described the first power amplifier respectively, the power combiner that the other end is connected with described transmitting antenna.
3. circuit according to claim 1, is characterized in that, described filter comprises band pass filter.
4. circuit according to claim 1, is characterized in that, described diverter switch comprises radio frequency converting switch.
5. a radio-frequency front-end system, is characterized in that, comprising:
Radio-frequency (RF) front-end circuit as described in claim 1-4 any one and wireless signal transceiver;
Wherein, described wireless signal transceiver is connected with the diverter switch in described radio-frequency (RF) front-end circuit.
6. system according to claim 5, is characterized in that, described wireless signal transceiver comprises wireless router.
7. system according to claim 5, is characterized in that, described wireless signal transceiver comprises wireless network card.
8. system according to claim 5, is characterized in that, described wireless signal transceiver comprises wireless bridge.
9. system according to claim 5, is characterized in that, described wireless signal transceiver comprises radio network gateway.
10. system according to claim 5, is characterized in that, also comprises:
The second power divider being connected with wireless signal transceiver with described diverter switch respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572197.1A CN103546189B (en) | 2013-11-13 | 2013-11-13 | Radio-frequency (RF) front-end circuit and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310572197.1A CN103546189B (en) | 2013-11-13 | 2013-11-13 | Radio-frequency (RF) front-end circuit and system |
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| CN103546189A true CN103546189A (en) | 2014-01-29 |
| CN103546189B CN103546189B (en) | 2016-04-13 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218903A (en) * | 2014-08-15 | 2014-12-17 | 苏州华士无线科技有限公司 | WiFi (wireless fidelity) signal amplifier based on automatic gain control technology |
| WO2015067163A1 (en) * | 2013-11-05 | 2015-05-14 | Tencent Technology (Shenzhen) Company Limited | Method, server and system for controling authority |
| CN108768415A (en) * | 2018-05-22 | 2018-11-06 | Oppo广东移动通信有限公司 | Radio circuit, antenna module and electronic equipment |
| CN109962721A (en) * | 2017-12-26 | 2019-07-02 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of RF front-end circuit for software radio transceiver |
| CN111355508A (en) * | 2020-02-13 | 2020-06-30 | 芯朴科技(上海)有限公司 | Radio frequency circuit |
| CN114270712A (en) * | 2019-06-04 | 2022-04-01 | 株式会社Kmw | Time division duplex antenna device |
| CN114710178A (en) * | 2022-02-16 | 2022-07-05 | 晋江三伍微电子有限公司 | Radio frequency front-end module, communication circuit and electronic equipment |
| CN115297490A (en) * | 2022-07-27 | 2022-11-04 | 欧智通科技股份有限公司 | Device for expanding WI-FI radiation range |
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| US7110381B1 (en) * | 2001-03-19 | 2006-09-19 | Cisco Systems Wireless Networking (Australia) Pty Limited | Diversity transceiver for a wireless local area network |
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| WO2015067163A1 (en) * | 2013-11-05 | 2015-05-14 | Tencent Technology (Shenzhen) Company Limited | Method, server and system for controling authority |
| CN104218903A (en) * | 2014-08-15 | 2014-12-17 | 苏州华士无线科技有限公司 | WiFi (wireless fidelity) signal amplifier based on automatic gain control technology |
| CN109962721A (en) * | 2017-12-26 | 2019-07-02 | 天津大学（青岛）海洋工程研究院有限公司 | A kind of RF front-end circuit for software radio transceiver |
| CN108768415A (en) * | 2018-05-22 | 2018-11-06 | Oppo广东移动通信有限公司 | Radio circuit, antenna module and electronic equipment |
| CN114270712A (en) * | 2019-06-04 | 2022-04-01 | 株式会社Kmw | Time division duplex antenna device |
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| CN111355508A (en) * | 2020-02-13 | 2020-06-30 | 芯朴科技(上海)有限公司 | Radio frequency circuit |
| CN114710178A (en) * | 2022-02-16 | 2022-07-05 | 晋江三伍微电子有限公司 | Radio frequency front-end module, communication circuit and electronic equipment |
| CN115297490A (en) * | 2022-07-27 | 2022-11-04 | 欧智通科技股份有限公司 | Device for expanding WI-FI radiation range |
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|---|---|
| CN103546189B (en) | 2016-04-13 |
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