CN2819659Y - Direct WCDMA broadcast station of mobile telecommunication - Google Patents
Direct WCDMA broadcast station of mobile telecommunication Download PDFInfo
- Publication number
- CN2819659Y CN2819659Y CN 200520091494 CN200520091494U CN2819659Y CN 2819659 Y CN2819659 Y CN 2819659Y CN 200520091494 CN200520091494 CN 200520091494 CN 200520091494 U CN200520091494 U CN 200520091494U CN 2819659 Y CN2819659 Y CN 2819659Y
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- CN
- China
- Prior art keywords
- amplifier
- power amplifier
- control circuit
- duplexers
- wcdma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a WCDMA direct amplifying station of mobile communication, which comprises two duplexers, a downlink and an uplink, wherein the two duplexers are respectively connected with a donor antenna and a retransmission antenna, and the downlink and the uplink are arranged between the two duplexers and respectively formed by connecting a low noise amplifier, a frequency selector and a power amplifier in series. The utility model is characterized in that the power amplifier comprises a pi-shaped attenuator, a isolator, an ALC automaticity control circuit, a sonic surface wave filter, and a four-stage amplifier which is composed of an amplifying module (04), an amplifier (BFG591), an integrated circuit (MW41C2230) and a power synthesis circuit, wherein a power amplifier gain control circuit is arranged between the amplifying module (04) and the amplifier (BFG591). The four-stage amplifier can be utilized to cause the high linearity of the power amplifier, and then, multi-channel working without any noise wave can be guaranteed.
Description
Technical field:
The utility model relates to a kind of Wireless Telecom Equipment, specifically a kind of mobile communication WCDMA repeater.
Background technology:
Mobile communication technology is in develop rapidly at present, the extensive use in the world in 2004 of 3G mobile communication, China also wants large-area applications in the recent period, therefore, also need perfect, a good network urgently, employing WCDMA repeater can enlarge the coverage of WCDMA system base-station, saves the investment of WCDMA networking greatly, particularly under particular surroundingss such as high-rise building, underground (as subway), blind area, its advantage will be given full play in the WCDMA repeater.But the linearity of WCDMA repeater power amplifier is also lower at present, and result of use is relatively poor.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of mobile communication WCDMA repeater of superlinearity power amplifier, makes it to guarantee that multichannel work do not have clutter, improves result of use greatly.
The purpose of this utility model is to realize like this, it comprises two duplexers that link to each other with donor antenna and retransmitting antenna respectively and places between two duplexers respectively by low noise amplifier, frequency-selector, power amplifier is connected in series the down link and the up link of formation mutually, it is characterized in that: described power amplifier comprises Π type attenuator, isolator, the ALC automatic level control circuit, SAW (Surface Acoustic Wave) filter and by amplification module (04), amplifier (BFG591), integrated circuit (MW41C2230) amplifies with the level Four that power synthesis circuit constitutes, between amplification module (04) and amplifier (BFG591), be provided with the power amplifier gain control circuit, the signal output part of frequency-selector is through Π type attenuator, isolator links to each other with the input of ALC automatic level control circuit, the output of ALC automatic level control circuit links to each other through the input of SAW (Surface Acoustic Wave) filter with amplification module (04), and the signal output part of power synthesis circuit links to each other with duplexer RX end through isolator.
The utility model has the advantages that and adopt the superlinearity power amplifier that the work of assurance multichannel does not have clutter.The WCDMA repeater is applied in the WCDMA mobile communications network, two-way relay wireless signal extension radio coverage, realization covers extreme terrain and eliminates coverage hole, the allotment Zone, the telephone traffic of each sub-district of balance, strengthen dominant pilot or the like in " pilot pollution " area, to reach the low-cost purpose that enlarges the wireless network coverage, optimizes network.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Fig. 1 is the utility model circuit block diagram;
Fig. 2 is the power amplifier electrical schematic diagram.
Embodiment:
By accompanying drawing as can be known, the utility model comprises 2 duplexers, descending low noise amplifier, down frequency selection device, downlink power amplifier, up low noise amplifier, up frequency-selector, ascending power amplifier.
The WCDMA repeater receives the base station down signal by donor antenna, through duplexer downstream signal extracted and to send the down frequency selection device after sending descending low noise amplifier to amplify, after the frequency-selector frequency-selecting, enter downlink power amplifier and amplify, be sent to cable and distribution system through low-loss, high-isolation duplexer, through domestic aerial to area of coverage radiation.Domestic aerial receives the mobile phone upward signal and extracts to serve through duplexer and serves capable frequency-selector frequency-selecting after capable low noise amplifier amplifies, and enters the ascending power amplifier again and amplifies, and the upward signal of amplification is through duplexer, deliver to the base station by donor antenna again.Its circuit structure and principle and prior art are basic identical, and institute's difference key is power amplifier (downlink power amplifier is identical with ascending power amplifier circuit structure and operation principle).
This power amplifier is made of Π type attenuator, two isolators (2.14.1117), ALC automatic level control circuit (HSMP3810), SAW (Surface Acoustic Wave) filter (SAW), amplification module (04), amplifier (BFG591), integrated circuit (MW41C2230), power synthesis circuit (two MRF5S2113 and two electric bridge LOT-90208).
Its operation principle is: from RF IN input WCDMA radiofrequency signal, through the decay of Π type, adjust the input size of signal, through isolator, signal is unidirectional by preventing that signal reflex from influencing the previous stage circuit of power amplifier.After the control circuit of the ALC that forms by two HSMP3810 chips through (automatic electric-level control), the WCDMA signal of input enters the SAW (Surface Acoustic Wave) filter of a 60MHz bandwidth, keeps the signal in the service band and the outer useless signal of frequency band is filtered.The WCMDA signal enters amplification module 04, its gain has about 14dB, through a H273 control circuit, realize control then, make the step gain heading of power amplifier regulate 1-31dB down the power amplifier gain, the signal that comes out passes through the amplification of BFG591 amplifier again, this amplifier is about 7dB in the gain of WCMDA frequency range, and that 3rd level amplifies use is integrated circuit MW4IC2230, and it is the integrated circuit of one kind of multiple frequencies, be widely used in the WCMDA device, gain can reach more than the 30dB.It is power synthesis circuit that afterbody amplifies the circuit that adopts, what single channel was amplified use is the MRF of Motorola family chip, thereby realize high-power, high linear radiofrequency signal power amplification, about gain 13dB, the WCDMA radiofrequency signal of amplification is exported from RF OUT by an isolator.
RF IN and RF OUT joint are sub-miniature A connector.
Claims (2)
1, a kind of mobile communication WCDMA repeater, it comprises two duplexers that link to each other with donor antenna and retransmitting antenna respectively and places between two duplexers respectively by low noise amplifier, frequency-selector, power amplifier is connected in series the down link and the up link of formation mutually, it is characterized in that: described power amplifier comprises ∏ type attenuator, isolator, the ALC automatic level control circuit, SAW (Surface Acoustic Wave) filter and by amplification module (04), amplifier (BFG591), integrated circuit (MW41C2230) amplifies with the level Four that power synthesis circuit constitutes, between amplification module (04) and amplifier (BFG591), be provided with the power amplifier gain control circuit, the signal output part of frequency-selector is through ∏ type attenuator, isolator links to each other with the input of ALC automatic level control circuit, the output of ALC automatic level control circuit links to each other through the input of SAW (Surface Acoustic Wave) filter with amplification module (04), and the signal output part of power synthesis circuit links to each other with duplexer RX end through isolator.
2, mobile communication WCDMA as claimed in claim 1 repeater is characterized in that: to amplify what use be the MRF of Motorola family chip to single channel in the described power synthesis circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091494 CN2819659Y (en) | 2005-06-27 | 2005-06-27 | Direct WCDMA broadcast station of mobile telecommunication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091494 CN2819659Y (en) | 2005-06-27 | 2005-06-27 | Direct WCDMA broadcast station of mobile telecommunication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2819659Y true CN2819659Y (en) | 2006-09-20 |
Family
ID=37005720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520091494 Expired - Lifetime CN2819659Y (en) | 2005-06-27 | 2005-06-27 | Direct WCDMA broadcast station of mobile telecommunication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2819659Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867405A (en) * | 2010-06-02 | 2010-10-20 | 青岛中嘉轨道交通技术有限公司 | Special mobile repeater for high-speed train |
| CN103595145A (en) * | 2013-10-31 | 2014-02-19 | 浙江大学 | System for achieving high-speed communication and wireless energy transmission on basis of public inductive coupling |
| CN106253962A (en) * | 2016-08-02 | 2016-12-21 | 大连金盛义电子科技有限公司 | A kind of wireless signal extension apparatus |
-
2005
- 2005-06-27 CN CN 200520091494 patent/CN2819659Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867405A (en) * | 2010-06-02 | 2010-10-20 | 青岛中嘉轨道交通技术有限公司 | Special mobile repeater for high-speed train |
| CN103595145A (en) * | 2013-10-31 | 2014-02-19 | 浙江大学 | System for achieving high-speed communication and wireless energy transmission on basis of public inductive coupling |
| CN103595145B (en) * | 2013-10-31 | 2015-08-05 | 浙江大学 | A kind of system realizing high speed communication and wireless energy transfer based on public inductance coupling high |
| CN106253962A (en) * | 2016-08-02 | 2016-12-21 | 大连金盛义电子科技有限公司 | A kind of wireless signal extension apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ALLWIN TELECOMM CO., LTD. Free format text: FORMER NAME OR ADDRESS: AOWEI COMMUNICATION TECHNOLOGY CO., LTD., SHENYANG |
|
| CP03 | Change of name, title or address |
Address after: At 110044 Shenyang Road, Liaoning Province Hunnan New District No. 6 Patentee after: Allwin Telecommunication Co., Ltd. Address before: 110044 No. 168, Dadong Avenue, Dadong District, Liaoning, Shenyang Patentee before: Aowei Communication Technology Co., Ltd., Shenyang |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150627 Granted publication date: 20060920 |
|
| EXPY | Termination of patent right or utility model |