CN201238301Y - WLAN trunk amplifier - Google Patents
WLAN trunk amplifier Download PDFInfo
- Publication number
- CN201238301Y CN201238301Y CNU2008200941895U CN200820094189U CN201238301Y CN 201238301 Y CN201238301 Y CN 201238301Y CN U2008200941895 U CNU2008200941895 U CN U2008200941895U CN 200820094189 U CN200820094189 U CN 200820094189U CN 201238301 Y CN201238301 Y CN 201238301Y
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- amplifier
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- frequency
- switch
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Abstract
The utility model discloses a WLAN trunk amplifier, which is used for amplifying the trunk signal of an indoor coverage system, and comprises a radio-frequency amplification module and a synchronic control module, wherein, the radio-frequency amplification module adopts a time division multiplexing mode to perform the low-noise amplification processing for the signal that is inputted by the upstream link and to perform the power amplification processing for the signal that is imputed by the downstream link; the radio-frequency amplification module comprises an upstream low-noise link and a downstream power amplification link; the synchronic control module comprises a coupler, a radio detector, a comparison amplifier and an inverter. The upstream and the downstream links of the WLAN trunk amplifier can realize the automatic switchover and the automatic electric level control, so as to output the stable power, and to be convenient for the application and the maintenance of the engineering; the WLAN trunk amplifier can realize the gain adjustment.
Description
[technical field]
The utility model relates to the mobile communication indoor distribution system technology, relates in particular to the trunk amplifier of the indoor covering of a kind of WLAN of being applicable to.
[background technology]
The WLAN trunk amplifier is a very important part in the mobile communication indoor distribution system, and its main effect is the wireless signal that amplifies input, in order to loss that compensates telecommunication cable in the indoor distributed system and the covering that improves the indoor wireless signal.At present, the technical indicators such as power output of most of indoor trunk amplifier equipment all need the engineering staff manually to be provided with according to the signal conditioning of measure field, when in case signal conditioning has greatly changed, just require the engineering staff to debug once more to the scene, reset the indexs such as power output of trunk amplifier, this brings inconvenience greatly for the maintenance and management of equipment, therefore, be necessary to design a kind of automatic electric-level of realizing and control, the trunk amplifier of stablizing power output solves the problems referred to above.
[utility model content]
The purpose of this utility model just provides a kind of automatic electric-level control of realizing, stablizes power output and can realize the WLAN trunk amplifier of gain-adjusted.
In order to address the above problem, the utility model provides following technical scheme:
A kind of WLAN trunk amplifier, the main signal that is used for indoor covering system amplifies, it comprises RF Amplifier Module and synchronization control module, described RF Amplifier Module adopts time division multiplexing, input signal to up link carries out the low noise processing and amplifying, input signal to down link carries out the power amplification processing, described RF Amplifier Module comprises up low noise link and descending power amplifier link, and up low noise link comprises the radio-frequency (RF) switch 110 that is serially connected in successively on the link, radio-frequency (RF) switch 111, low noise pipe 112, voltage-controlled attenuator 113, amplifier tube 114, numerical-control attenuator 115, filter 116, coupler 117, radio-frequency (RF) switch 101, wave detector 119, comparator 120; Descending power amplifier link comprises radio-frequency (RF) switch 101, voltage-controlled attenuator 102, amplifier tube 103, numerical-control attenuator 104, orthocoupler 105, amplifier tube 106, amplifier tube 107, orthocoupler 108, coupler 109, radio-frequency (RF) switch 110, wave detector 126, the comparison amplifier 125 that is serially connected in successively on the link.
Further, described synchronization control module comprises coupler 100, wave detector 121, comparison amplifier 122, inverter 123.
Further, described coupler (100,109,117) is microstrip coupler, under the prerequisite that satisfies the every technical indicator of WLAN trunk amplifier, reduces manufacturing cost.
Further, described numerical-control attenuator (104,115) is that attenuation range 31db, stepping are the numerical-control attenuator of 1db.
Further, the amplifier tube of described descending power amplifier link (106,107) adopts balanced type to connect.
The utility model WLAN trunk amplifier has the following advantages compared to existing technology:
(1) the uplink and downlink link of the utility model WLAN trunk amplifier can be realized automaticallying switch and automatic electric-level control, stablizes power output, is convenient to the application and the maintenance of engineering;
(2) this WLAN trunk amplifier can also be realized gain-adjusted.
[accompanying drawing]
Fig. 1 is the structured flowchart of the utility model WLAN trunk amplifier.
[embodiment]
The purpose of this utility model just provides a kind of automatic electric-level control of realizing, stablizes power output and can realize the WLAN trunk amplifier of gain-adjusted.
The utility model is further described below in conjunction with accompanying drawing.See also accompanying drawing, the main signal that WLAN trunk amplifier of the present utility model is used for indoor covering system amplifies, it comprises RF Amplifier Module and synchronization control module, described RF Amplifier Module adopts time division multiplexing, input signal to up link carries out the low noise processing and amplifying, the input signal of down link is carried out power amplification handle.
Described RF Amplifier Module comprises up low noise link and descending power amplifier link, and described up low noise link comprises radio-frequency (RF) switch 110, radio-frequency (RF) switch 111, low noise pipe 112, voltage-controlled attenuator 113, amplifier tube 114, numerical-control attenuator 115, filter 116, coupler 117, radio-frequency (RF) switch 101, wave detector 119, the comparator 120 that is serially connected in successively on the link; Described descending power amplifier link comprises radio-frequency (RF) switch 101, voltage-controlled attenuator 102, amplifier tube 103, numerical-control attenuator 104, orthocoupler 105, amplifier tube 106, amplifier tube 107, orthocoupler 108, coupler 109, radio-frequency (RF) switch 110, wave detector 126, the comparison amplifier 125 that is serially connected in successively on the link; Described synchronization control module comprises coupler 100, wave detector 121, comparison amplifier 122, the inverter 123 that is serially connected in successively on the link.
Up input signal is by radio-frequency (RF) switch 110, radio-frequency (RF) switch 111, after entering LNA pipe 112 and amplifying, again by voltage-controlled attenuator 113, entering amplifier tube 114 amplifies, entering numerical-control attenuator 115 then decays, carry out filtering by filter 116 again, by coupler 117, at last by radio-frequency (RF) switch 101, coupler 100 outputs; Descending input signal is by radio-frequency (RF) switch 101, voltage-controlled attenuator 102, after entering into amplifier tube 103, amplifying by it, entering numerical-control attenuator 104 decays, by orthocoupler 105 signal is divided into identical two paths of signals then, enter amplifier tube 106 respectively, amplifier tube 107 amplifies, again by orthocoupler 108 synthetic one road signals, by coupler 109, at last by radio-frequency (RF) switch 110 outputs.
The coupler 100 of synchronization control module, wave detector 121, comparator 122, inverter 123 constitute synchronization control circuit with radio-frequency (RF) switch 101, radio-frequency (RF) switch 110, radio-frequency (RF) switch 111.Radio-frequency (RF) switch 110, radio-frequency (RF) switch 111, radio-frequency (RF) switch 101 are designed to do not have signal when input to point to up link descending, i.e. during down link no signal input, up link is in normally open, and this moment, down link was a normally off.When downstream signal is imported, signal inputs to wave detector 121 by a part of signal of coupler 100 couplings, wave detector 121 is converted into DC level, input to comparator 122 then, the flat inverter 123 that enters of comparison amplifier output DC, control radio-frequency (RF) switch 101, radio-frequency (RF) switch 110, radio-frequency (RF) switch 111 respectively by inverter output control voltage, make these three radio-frequency (RF) switch all point to down link, thereby up link is closed, down link is opened, and realizes uplink and downlink link time-sharing multiplex and automatic switchover.
Described coupler 100,109,117 is microstrip coupler, can reduce the manufacturing cost of trunk amplifier; Described amplifier tube 106,107 connects by balanced type, adopts the balanced type amplification principle, both can improve the power output of descending power amplifier link, can guarantee the linear index of descending power amplifier link again.
Above-described only is the utility model preferred implementation, and it describes comparatively concrete and detailed, can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (5)
1, a kind of WLAN trunk amplifier, the main signal that is used for indoor covering system amplifies, it comprises RF Amplifier Module and synchronization control module, described RF Amplifier Module adopts time division multiplexing, input signal to up link carries out the low noise processing and amplifying, input signal to down link carries out the power amplification processing, it is characterized in that: described RF Amplifier Module comprises up low noise link and descending power amplifier link, and up low noise link comprises the radio-frequency (RF) switch (110) that is serially connected in successively on the link, radio-frequency (RF) switch (111), low noise pipe (112), voltage-controlled attenuator (113), amplifier tube (114), numerical-control attenuator (115), filter (116), coupler (117), radio-frequency (RF) switch (101), wave detector (119), comparator (120); Descending power amplifier link comprises radio-frequency (RF) switch (101), voltage-controlled attenuator (102), amplifier tube (103), numerical-control attenuator (104), orthocoupler (105), amplifier tube (106), amplifier tube (107), orthocoupler (108), coupler (109), radio-frequency (RF) switch (110), wave detector (126), the comparison amplifier (125) that is serially connected in successively on the link.
2, WLAN trunk amplifier according to claim 1 is characterized in that: described synchronization control module comprises coupler (100), wave detector (121), comparison amplifier (122), inverter (123).
3, WLAN trunk amplifier according to claim 1 is characterized in that: described coupler (100,109,117) is microstrip coupler.
4, WLAN trunk amplifier according to claim 1 is characterized in that: described numerical-control attenuator (104), 115) be that attenuation range is that 31db, stepping are the numerical-control attenuator of 1db.
5, WLAN trunk amplifier according to claim 1 is characterized in that: the amplifier tube of described descending power amplifier link (106,107) adopts balanced type to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941895U CN201238301Y (en) | 2008-05-23 | 2008-05-23 | WLAN trunk amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941895U CN201238301Y (en) | 2008-05-23 | 2008-05-23 | WLAN trunk amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201238301Y true CN201238301Y (en) | 2009-05-13 |
Family
ID=40651034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200941895U Expired - Fee Related CN201238301Y (en) | 2008-05-23 | 2008-05-23 | WLAN trunk amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201238301Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181940A1 (en) * | 2016-04-20 | 2017-10-26 | 深圳国人通信股份有限公司 | Power amplifier module supporting mimo technology |
| CN107743039A (en) * | 2017-11-18 | 2018-02-27 | 国家电网公司 | A kind of GPRS acquisition terminals signal strength self-adapting data test and transmitting device |
| CN107819476A (en) * | 2017-11-18 | 2018-03-20 | 国家电网公司 | The lightning protection antenna and system of a kind of extremely strong and pole weak signal for GPRS acquisition terminals |
| CN113726397A (en) * | 2021-08-24 | 2021-11-30 | 昂科信息技术（上海）股份有限公司 | Anti-interference self-adaptive trunk amplifier, system and signal processing system |
-
2008
- 2008-05-23 CN CNU2008200941895U patent/CN201238301Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017181940A1 (en) * | 2016-04-20 | 2017-10-26 | 深圳国人通信股份有限公司 | Power amplifier module supporting mimo technology |
| CN107743039A (en) * | 2017-11-18 | 2018-02-27 | 国家电网公司 | A kind of GPRS acquisition terminals signal strength self-adapting data test and transmitting device |
| CN107819476A (en) * | 2017-11-18 | 2018-03-20 | 国家电网公司 | The lightning protection antenna and system of a kind of extremely strong and pole weak signal for GPRS acquisition terminals |
| CN107743039B (en) * | 2017-11-18 | 2023-06-02 | 国家电网公司 | GPRS acquisition terminal signal strength self-adaptive data testing and transmitting device |
| CN107819476B (en) * | 2017-11-18 | 2023-08-11 | 国家电网公司 | Lightning protection antenna and system for GPRS acquisition terminal |
| CN113726397A (en) * | 2021-08-24 | 2021-11-30 | 昂科信息技术（上海）股份有限公司 | Anti-interference self-adaptive trunk amplifier, system and signal processing system |
| CN113726397B (en) * | 2021-08-24 | 2022-08-16 | 昂科信息技术（上海）股份有限公司 | Anti-interference self-adaptive trunk amplifier, system and signal processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Guoren Communication Co., Ltd., Shenzhen Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20100523 |