CN201533410U - WCDMA wireless repeater with self-excitation elimination system - Google Patents
WCDMA wireless repeater with self-excitation elimination system Download PDFInfo
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- CN201533410U CN201533410U CN2009201393996U CN200920139399U CN201533410U CN 201533410 U CN201533410 U CN 201533410U CN 2009201393996 U CN2009201393996 U CN 2009201393996U CN 200920139399 U CN200920139399 U CN 200920139399U CN 201533410 U CN201533410 U CN 201533410U
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- excitation
- amplifier
- power amplifier
- noise amplifier
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Abstract
The utility model discloses a WCDMA wireless repeater with a self-excitation elimination system, which comprises a donor antenna, a repeating antenna, two duplexers, a downstream low-noise amplifier, a downstream power amplifier, an upstream low-noise amplifier, an upstream power amplifier, a power supply module and a downstream self-excitation elimination module, an upstream self-excitation elimination module and a monitoring system unit, wherein the downstream low-noise amplifier, the downstream power amplifier, the upstream low-noise amplifier and the upstream power amplifier are connected between the two duplexers, the downstream self-excitation module is connected between the downstream low-noise amplifier and the downstream power amplifier, and the upstream self-excitation elimination module is connected between the upstream low-noise amplifier and the upstream power amplifier. The WCDMA can realize self protection, self adapting and remote control in any signal covering environment, reduces requirements of the repeater to installation environments and decreases work load of mounting and debugging of engineering.
Description
Technical field
The utility model relates to communication technical field, and special and a kind of WCDMA wireless discharging-directly station with self-excitation elimination system is relevant.
Background technology
On 05 16th, 2007, the WCDMA digital cellular repeater industry standard of " YD/T1554-2007 " is implemented in The Ministry of Information Industry of the People's Republic of China, MOII's issue, CHINAUNICOM also obtains WCDMA system of Ministry of Industry and Information 3G license on January 7th, 2009, begin to distribute telephone numbers during " 517 " World Telecommunication Day, sign 3G WCDMA network formally enters commercialization, and networking is extremely urgent.If all adopt the method for newly-built base station, not only the speed of cost costliness but also networking also can not be guaranteed, and adopting the repeater is that cost performance is the highest, produces, installs method the most efficiently.
General networking is optimized the WCDMA wireless discharging-directly station, referring to Fig. 1, form by two links of up-downgoing, receive the signal that base station (BS) 1 sends from antenna for base station 2 by donor antenna 3, through amplifying and data processing, be transmitted into the aerial mobile device (MS) that supplies through retransmitting antenna 5 and receive, the link of this signal process is a down link; In like manner, retransmitting antenna 5 receives and supplies mobile device (MS) through up amplification link, is emitted to base station (BS) 1 by donor antenna 3 again and receives.
The repeater is again a kind of same audio amplifier, isolate inadequately so traditional repeater is easy to because of donor antenna in engineering is used and the retransmitting antenna installation site is limited, perhaps, other 2G, 3G network disturb because of covering the signal (Pin) that inserts, or because of the generation of the strong signal that happens suddenly, thereby produce self-excitation, the end various problems such as level increase, final stage power amplifier (PA) damage of making an uproar.In case system's generation problem all gets the technical staff and carries relevant instrument and meter and investigate one by one to engineering site, do so very and lose time and manpower.
Given this, the inventor has increased self-excitation and has eliminated system on the basis of traditional repeater, reduce the difficulty of engineering construction and debugging, simplifies the siting of station, normally opens, works in the assurance repeater, and this case produces thus.
The utility model content
The purpose of this utility model is to provide a kind of WCDMA wireless discharging-directly station with autonomous system, overcomes because of donor antenna and the retransmitting antenna installation site is limited or external interference produces self-excitation, makes things convenient for opening of repeater to use and safeguard.
In order to achieve the above object, solution of the present utility model is:
Have self-excitation and eliminate the WCDMA wireless discharging-directly station of system, comprise donor antenna, retransmitting antenna, two duplexers and be connected descending low noise amplifier, downlink power amplifier, up low noise amplifier, ascending power amplifier between the duplexer, and power module; Also comprise the descending self-excitation cancellation module that is connected between descending low noise amplifier and the downlink power amplifier, be connected the up self-excitation cancellation module between up low noise amplifier and the ascending power amplifier, and the supervisory control system unit; The supervisory control system unit links to each other with up-downgoing low noise amplifier, up and down power amplifier and up-downgoing self-excitation cancellation module.
Described descending self-excitation cancellation module is identical with up self-excitation cancellation module structure, comprise the input mixer, input amplifier tube, the A/D analog to digital converter that connect successively, DSP (digitalsingnal processor) data processing unit, D/A digital to analog converter, output amplifier tube, output frequency mixer; Local oscillation signal is connected with CPU element by phase-locked loop, and CPU element is connected on the supervisory control system unit by the serial ports control unit.
Described ascending power amplifier also has forward power detecting unit and automatic electric-level control (being called for short ALC) controller, be used to transmit the forward power detecting unit connection supervisory control system unit of forward direction power output, the ALC controller connects ALC and supervisory control system unit, and the numerical control decay (ATT) of ascending power amplifier is connected on the supervisory control system unit.
After adopting such scheme, automatic protection, self-adaptation, remote monitoring be can in any signal overlay environment, realize, the requirement to the repeater installation environment, the workload of minimizing project installation and commissioning reduced.
Description of drawings
Fig. 1 is existing WCDMA wireless discharging-directly station structure chart;
Fig. 2 is the structural representation of the utility model preferred embodiment;
Fig. 3 is the structural representation of self-excitation cancellation module in the utility model preferred embodiment;
Fig. 4 is the structural representation of ascending power amplifier in the utility model preferred embodiment.
Embodiment
As shown in Figure 2, having self-excitation eliminates the WCDMA wireless discharging-directly station of system and comprises donor antenna 3, retransmitting antenna 5, two duplexers 6 and 14.Duplexer 6 and 14 is the 15MHzWCDMA duplexer.
Between duplexer 6 and 14 two links are arranged, one is descending low noise amplifier 7, descending self-excitation cancellation module 8 and the downlink power amplifier 9 that connects in turn.Another is up low noise amplifier 13, up self-excitation cancellation module 12 and the ascending power amplifier 11 that connects in turn.
The utility model also comprises supervisory control system unit 10, and descending low noise amplifier 7, descending self-excitation cancellation module 8, downlink power amplifier 9, up low noise amplifier 13, up self-excitation cancellation module 12 and ascending power amplifier 11 all are connected on the supervisory control system unit 10.
In the utility model, import descending low noise amplifier 7 after signal process duplexer 6 filtering of down link by donor antenna 3 reception base stations 1, handled by descending self-excitation cancellation module 8, process downlink power amplifier 9, duplexer 14, retransmitting antenna 5 are to end user terminal 15 again.Up link through duplexer 14, up low noise amplifier 13, up self-excitation cancellation module 12 and ascending power amplifier 11, duplexer 6, is sent to base station 1 by donor antenna 3 for to send signal to retransmitting antenna 5 from end user terminal 15 at last.
In the utility model, descending self-excitation cancellation module 8 is identical with up self-excitation cancellation module 12 structures, present embodiment is an example with descending self-excitation cancellation module 8, comprise the input mixer 16, input amplifier tube 17, the A/D analog to digital converter 18 that connect successively, DSP data processing unit 22, D/A digital to analog converter 19, output amplifier tube 20, output frequency mixer 21.Local oscillation signal 25 is connected on the DSP data processing unit 22 after handling by phase-locked loop 24 and CPU element 23 simultaneously, and CPU element 23 is connected on the supervisory control system unit 10 by serial ports control unit 26.
The signal that receives from descending low noise amplifier 7 becomes intermediate-freuqncy signal by input mixer 16 mixing through input amplifier 17, converts digital signal to by A/D analog to digital converter 18 again and inputs to DSP data processing unit 22.DSP data processing unit 22 is also accepted the local oscillation signal 25 through phase-locked loop 24 and CPU element 23 processing simultaneously, and digital signal carried out phase-detection, filtering, differentiate base station signal and self-excitation signal, simultaneously self-excitation signal is handled, be reduced to intermediate-freuqncy signal by D/A digital to analog converter 19 then, pass to downlink power amplifier 9 after the amplification mixing.
Ascending power amplifier 11 in the present embodiment also has forward power detecting unit 31 and automatic electric-level control (being called for short ALC) controller 30.Forward power detecting unit 31 detects the forward direction power output (Pout) of the power amplifier in the up link, forward direction power output (Pout) is converted to a power detection level inputs to supervisory control system unit 10.ALC controller 30 connects ALC28 and supervisory control system unit 10, and the automatic control initial control level among the ALC28 is delivered to supervisory control system unit 10, analyzes relatively through doing with the parameter of equipment requirements, judges whether direct discharging station is in the self-excitation state.When system was in the self-excitation state, supervisory control system unit 10 was done the signal attenuation of adaptivity simultaneously by numerical control decay (ATT) 27 pairs of uplink downlinks, eliminate up to self-excitation, reaches adaptive effect.
Claims (3)
1. have self-excitation and eliminate the WCDMA wireless discharging-directly station of system, comprise donor antenna, retransmitting antenna, two duplexers and be connected descending low noise amplifier, downlink power amplifier, up low noise amplifier, ascending power amplifier between the duplexer, and power module, it is characterized in that: also comprise the descending self-excitation cancellation module that is connected between descending low noise amplifier and the downlink power amplifier, be connected the up self-excitation cancellation module between up low noise amplifier and the ascending power amplifier, and the supervisory control system unit; The supervisory control system unit links to each other with up-downgoing low noise amplifier, up and down power amplifier and up-downgoing self-excitation cancellation module.
2. the described WCDMA wireless discharging-directly station that system is eliminated in self-excitation that has as claimed in claim 1, it is characterized in that: descending self-excitation cancellation module is identical with up self-excitation cancellation module structure, comprise the input mixer, input amplifier tube, the A/D analog to digital converter that connect successively, DSP data processing unit, D/A digital to analog converter, output amplifier tube, output frequency mixer; Local oscillation signal is connected with CPU element by phase-locked loop, and CPU element is connected on the supervisory control system unit by the serial ports control unit.
3. the described WCDMA wireless discharging-directly station that system is eliminated in self-excitation that has as claimed in claim 2, it is characterized in that: described ascending power amplifier also has forward power detecting unit and automatic electric-level control controller, be used to transmit the forward power detecting unit connection supervisory control system unit of forward direction power output, the ALC controller connects ALC and supervisory control system unit, and the numerical control decay of ascending power amplifier is connected on the supervisory control system unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201393996U CN201533410U (en) | 2009-07-13 | 2009-07-13 | WCDMA wireless repeater with self-excitation elimination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201393996U CN201533410U (en) | 2009-07-13 | 2009-07-13 | WCDMA wireless repeater with self-excitation elimination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201533410U true CN201533410U (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201393996U Expired - Fee Related CN201533410U (en) | 2009-07-13 | 2009-07-13 | WCDMA wireless repeater with self-excitation elimination system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711151A (en) * | 2012-05-02 | 2012-10-03 | 京信通信系统（中国）有限公司 | Intelligent digital radio-frequency repeater and control method thereof |
-
2009
- 2009-07-13 CN CN2009201393996U patent/CN201533410U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711151A (en) * | 2012-05-02 | 2012-10-03 | 京信通信系统（中国）有限公司 | Intelligent digital radio-frequency repeater and control method thereof |
| CN102711151B (en) * | 2012-05-02 | 2014-11-12 | 京信通信系统（中国）有限公司 | Control method of intelligent digital radio-frequency repeater and intelligent digital radio-frequency repeater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20130713 |