CN2819660Y - Band-width adjusting selecting direct broadcast station for mobile-telecommunication - Google Patents
Band-width adjusting selecting direct broadcast station for mobile-telecommunication Download PDFInfo
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- CN2819660Y CN2819660Y CN 200520091495 CN200520091495U CN2819660Y CN 2819660 Y CN2819660 Y CN 2819660Y CN 200520091495 CN200520091495 CN 200520091495 CN 200520091495 U CN200520091495 U CN 200520091495U CN 2819660 Y CN2819660 Y CN 2819660Y
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- frequency
- link
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- filter
- repeater
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- 238000010295 mobile communication Methods 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 8
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000010897 surface acoustic wave method Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
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Abstract
The adjustable choosing band of a kind of mobile communication bandwidth repeater, it comprises two duplexers that link to each other with donor antenna and domestic aerial respectively and places between two duplexers and is connected in series down link and the up link that constitutes mutually by low noise amplifier, filter, power amplifier respectively, its technical characterstic is: be connected in series two frequency range selectors on down link and up link respectively, the filter on down link and the up link places between two frequency range selectors.Two frequency range selectors are the low side frequency and the high-end frequency of frequency-selecting bands respectively, and bandwidth is adjustable, and the filter in the middle of the choosing band device is used for filtering clutter and interference.Scope that will choosing band narrows down to minimum, and the carrier frequency of required usefulness is included in selects in the band scope, the result who does like this, effective more a lot of than common choosing band repeater, and price is cheap again more a lot of than overloading frequency selecting repeater frequently.
Description
Technical field:
The utility model relates to a kind of Wireless Telecom Equipment, the adjustable choosing band of specifically a kind of mobile communication bandwidth repeater.
Background technology:
Mobile communication technology is in develop rapidly at present, traffic carrying capacity is in sustainable growth, need perfect, a good network urgently, when utilizing the repeater to carry out the network optimization, some index of frequency selecting repeater is more much better than some index of choosing band repeater, but price is more expensive, especially many frequency selecting repeaters of carrier frequency quantity, as mobile operator, consider cost performance, so the more expensive frequency selecting repeater of price is obviously uneconomical for special mobile operator.In addition, existing choosing band repeater bandwidth is non-adjustable, thereby effect 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 low, the effective adjustable choosing band of the mobile communication bandwidth repeater of a kind of price.
The purpose of this utility model is to realize like this, it comprises two duplexers that link to each other with donor antenna and domestic aerial respectively and places between two duplexers and is connected in series down link and the up link that constitutes mutually by low noise amplifier, filter, power amplifier respectively, it is characterized in that: be connected in series two frequency range selectors on down link and up link respectively, the filter on down link and the up link places between two frequency range selectors.The GSM repeater receives the base station down signal by donor antenna, after sending downstream signal descending low noise amplifier to amplify, duplexer send the band downlink selector, the low side frequency and the high-end frequency of two frequency range selector difference frequency-selecting bands, filter in the middle of the choosing band device is used for filtering clutter and interference, adjusting filter makes it reach the complete machine flatness index, power amplifier carries out the frequency-selecting section and amplifies, 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 serves line frequency segment selector choosing band after duplexer is delivered to up low noise amplifier amplification, carry out the amplification of wideband section through frequency-selecting Duan Houzai ingoing power amplifier, and the upward signal of amplification is delivered to the base station by donor antenna again through duplexer.
The utility model has the advantages that will choosing band scope narrow down to minimum, the carrier frequency of required usefulness is included in selects in the band scope, the result who does like this, effective more a lot of than common choosing band repeater, and price is cheap again more a lot of than overloading frequency selecting repeater frequently.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Fig. 1 is a BREATHABLE BANDWIDTH choosing band repeater block diagram;
Fig. 2 is a BREATHABLE BANDWIDTH frequency range schematic diagram;
Fig. 3 is the frequency range selector electrical schematic diagram.
Embodiment:
By accompanying drawing as can be known, the utility model comprises 2 duplexers, 1 descending low noise amplifier, 1 up low noise amplifier, 2 band downlink selectors (frequency range selector 1 and frequency range selector 2), 2 uplink band selectors (frequency range selector 1 and frequency range selector 2), 1 downlink power amplifier, 1 ascending power amplifier, 1 downstream filter, 1 upstream filter.Constitute down link by 1 descending low noise amplifier, 1 downstream filter and 2 band downlink selectors, downstream filter places between 2 band downlink selectors; Constitute up link by 1 up low noise amplifier, 1 upstream filter and 2 uplink band selectors, upstream filter places between 2 band downlink selectors.
Band downlink is identical with the uplink band operation principle.
The frequency range selector (see figure 3) is made up of high-end selections device and low side selections device, and two selections devices are controlled respectively by signal high-end by frequency and low side by frequency, and two is selected frequency range by the frequency intermediate bands.Each selections device has two ports, is respectively RF
INAnd RF
OUT.Frequency is F
CRadio frequency frequently signal from RF
INPort input selections device, 2SC2351 carries out preposition amplification by the radio-frequency (RF) power amplification pipe, gains to be 11dB.Signal after the amplification mates the brachium pontis 1 that the back signal enters electric bridge by Л type network, brachium pontis 4,6 ends of electric bridge connect PIN pipe BAP64-05, change the supply power voltage of PIN pipe and then change the power output of the resistance control brachium pontis 3 of 4,6 arms by potentiometer, thereby realize the gain controlling of selections device.Frequency mixer is a nonlinear device, can produce new frequency component, and frequency mixer is made up of chip 004E and peripheral circuit, 1 terminal input signal carrier frequency F of frequency mixer
C, 3 terminals inputs local frequency F
L, after the 2 terminals output frequency conversion with frequently and difference frequency.Local oscillation signal is produced by VCO and phase-locked loop circuit, and its local frequency can arbitrarily be adjusted in the scope of application by Single-chip Controlling, and stepping is 100KHz.Local oscillation signal is divided into two-way by electric bridge, is respectively applied for down-conversion to guarantee the output signal frequency error.In the practical application, high-end selections device high-end by frequency F
C1With selections device centre frequency F
CHThe pass be: F
CI=F
CH+ bandwidth/2; The low side of low side selections device is by frequency F
C2With selections device centre frequency F
CLThe pass be: F
C2=F
CL-bandwidth/2, wherein bandwidth is the repeater operational frequency bandwidth.Radiofrequency signal in frequency mixer with the local oscillation signal mixing, the generation frequency is F
IIntermediate-freuqncy signal, in the up selections device, F
I=F
C-F
L, in the descending selections device, F
I=F
L-F
CLocal oscillation signal frequency F is set
LWith the pass of selections device centre frequency be F
LH-F
CH=F
LL-F
CL=90MHz (descending) or F
CH-F
LH=F
CL-F
LL=90MHz (up), the intermediate-freuqncy signal frequency after the input signal down-conversion is near 90MHz like this.Intermediate-freuqncy signal after the frequency conversion is amplified network through the intermediate frequency of being made up of intermediate frequency power tube 2SC2053 and peripheral circuit thereof and is amplified to compensate the decay of frequency mixer, and gaining is 15dB.Amplified IF signal enters Frequency Band Selection intermediate frequency SAW (Surface Acoustic Wave) filter.SAW (Surface Acoustic Wave) filter is a kind of electroacoustic transduction element, the signal of telecommunication of input converts surface acoustic wave to by interdigital transducer and propagates along the element Piezoelectric Substrates, interdigital transducer by output is reduced into the signal of telecommunication, finish bandpass filtering treatment, the centre frequency of intermediate frequency SAW (Surface Acoustic Wave) filter is 90MHz, the bandpass filtering bandwidth equals the repeater operational frequency bandwidth, and squareness factor is very good, has only F
IIn the time of in the passband of intermediate frequency sound table, signal could normally pass through.In high-end selections device if F
C＞F
CH, F then
I＞90MHz+ bandwidth/2, intermediate-freuqncy signal will be by filterings outside filter passband.In low side selections device if F
C＜F
CL, F then
I＜90MHz-bandwidth/2, intermediate-freuqncy signal also will be by filterings outside filter passband.Be the loss of passing through of compensation sound table 22dB, add the one-level intermediate frequency amplifier circuit, gain 15dB in the output of intermediate frequency sound table.Finish up-conversion to revert back frequency be F for enter frequency mixer and another road local oscillation signal mixing through filtering and amplified IF signal
CRadiofrequency signal.Radiofrequency signal after the up-conversion enters radio frequency sound table, the band connection frequency of radio frequency sound table is equal to the operating frequency with the repeater, filtering local oscillation signal and other useless mixed frequency signals, enter radio-frequency (RF) power amplification pipe 2SC2351 again and carry out gain compensation, mate laggardly to go into radio frequency power tube 05 and carry out final stage and amplify by Л type network, finally by radio frequency sound table from radio frequency delivery outlet RF
OUT, output.Has only the F of satisfying
CL＜F
C＜F
CHSignal could normal filter network by forming by high and low end selections device, put the centre frequency F of high and low end selections device by the software adjustment
C1And F
C2Thereby change is passed through the high low side of signal by frequency, finishes variable Frequency Band Selection.
Claims (1)
1, the adjustable choosing band of a kind of mobile communication bandwidth repeater, it comprises two duplexers that link to each other with donor antenna and domestic aerial respectively and places between two duplexers and is connected in series down link and the up link that constitutes mutually by low noise amplifier, filter, power amplifier respectively, it is characterized in that: be connected in series two frequency range selectors on down link and up link respectively, the filter on down link and the up link places between two frequency range selectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091495 CN2819660Y (en) | 2005-06-27 | 2005-06-27 | Band-width adjusting selecting direct broadcast station for mobile-telecommunication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091495 CN2819660Y (en) | 2005-06-27 | 2005-06-27 | Band-width adjusting selecting direct broadcast station for mobile-telecommunication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2819660Y true CN2819660Y (en) | 2006-09-20 |
Family
ID=37005721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520091495 Expired - Fee Related CN2819660Y (en) | 2005-06-27 | 2005-06-27 | Band-width adjusting selecting direct broadcast station for mobile-telecommunication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2819660Y (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 |
| CN101742631B (en) * | 2009-11-23 | 2012-07-04 | 福建京奥通信技术有限公司 | Repeater for solving covering of moving body and control method thereof |
| CN110224735A (en) * | 2019-05-13 | 2019-09-10 | 中国联合网络通信集团有限公司 | A kind of radio relay method and equipment |
-
2005
- 2005-06-27 CN CN 200520091495 patent/CN2819660Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101742631B (en) * | 2009-11-23 | 2012-07-04 | 福建京奥通信技术有限公司 | Repeater for solving covering of moving body and control method thereof |
| 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 |
| CN110224735A (en) * | 2019-05-13 | 2019-09-10 | 中国联合网络通信集团有限公司 | A kind of radio relay method and equipment |
| CN110224735B (en) * | 2019-05-13 | 2021-05-11 | 中国联合网络通信集团有限公司 | Wireless relay method and equipment |
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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 110179 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 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060920 Termination date: 20130627 |