CN2819658Y - Mobile telecommunication frequency-shift direct broadcast station - Google Patents
Mobile telecommunication frequency-shift direct broadcast station Download PDFInfo
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- CN2819658Y CN2819658Y CN 200520091217 CN200520091217U CN2819658Y CN 2819658 Y CN2819658 Y CN 2819658Y CN 200520091217 CN200520091217 CN 200520091217 CN 200520091217 U CN200520091217 U CN 200520091217U CN 2819658 Y CN2819658 Y CN 2819658Y
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Abstract
The utility model relates to a mobile telecommunication frequency shift direct amplifying station which comprises a near end frequency shift relay station, a far end frequency shift terminal station, and a microwave antenna which is arranged on the frequency shift relay station, a microwave antenna and a resending antenna, wherein the microwave antenna and the resending antenna are arranged on the frequency shift terminal station. Upper converters and lower converters in the frequency shift relay station and the frequency shift terminal station respectively adopt a converter module which is composed of a frequency mixer, a sound surface filter, an amplifier, and a circuit chip ADF4306-2 which integrates a PLL lock-phase loop frequency synthesizer and a VCO pressing control oscillator. The converter module is provided with three wire connecting terminals, wherein one wire connecting terminal is an input terminal of a carrier frequency signal, and one wire connecting terminal is an input terminal of a constant-temperature crystal oscillator, and another wire connecting terminal is an output terminal of a radio frequency signal. The telecommunication frequency shift direct amplifying station has advantages that the mobile telecommunication frequency shift direct amplifying station, which can be used at a place which does not have the conditions of using an optical fiber direct amplifying station, has no interference in a base station and can realize extensive seamless coverage, and the mobile telecommunication frequency shift direct amplifying station especially adopts the converter module so as to make the structure of the mobile telecommunication frequency shift direct amplifying station simple and the performance of the mobile telecommunication frequency shift direct amplifying station more reliable; the problem of sending and receiving synchronization frequency self excitation does not exist, and the isolation degree of an antenna feeder does to need be.
Description
Technical field:
The utility model relates to a kind of Wireless Telecom Equipment, specifically a kind of mobile communication frequency-shift 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, will be according to the characteristics of repeater series of products and the demand of mobile communications network, different geographical environment and application scenarios, design different system schemes, this needs serious analysis, treats with a certain discrimination.
For wireless discharging-directly station, it is particularly important that the isolation of signal seems.Wireless discharging-directly station is from the space received signal, certainly will require spacing wave pure as far as possible; And in the base station close quarters comparatively, the difficulty of separating different base station or sector signals will increase greatly, and the repeater is increased base station interference.So the close quarters comparatively in the base station, the introducing mode of wire signal is adopted in suggestion as far as possible, such as optical fiber repeater.But, then be difficult to make network to reach perfect, good effect not possessing the place of using the optical fiber repeater condition.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides is not a kind ofly possessing the mobile communication frequency-shift repeater that the place of using the optical fiber repeater condition is noiseless, simple in structure to the base station, can realize the seamless covering of large tracts of land.
The purpose of this utility model is achieved in that it comprises the shift frequency terminal station of the shift frequency relay station of near-end and far-end and is located at microwave antenna and the microwave antenna and the retransmitting antenna that are located on the shift frequency terminal station on the shift frequency relay station; The shift frequency relay station comprises two duplexers and places down link and the up link that is made of upconverter, filter, power amplifier and low noise amplifier, low-converter, filter respectively between two duplexers, between upconverter and low-converter, be provided with the constant-temperature crystal oscillator circuit, one of two duplexer links to each other with the base station through coupler, and another links to each other with microwave antenna; The shift frequency terminal station comprises two duplexers and places between two duplexers respectively by low noise amplifier, low-converter, filter, power puts down link and the up link that people's device and low noise amplifier, upconverter, filter, power amplifier constitute, between upconverter and low-converter, be provided with the constant-temperature crystal oscillator circuit, one of two duplexer links to each other with microwave antenna, and another links to each other with retransmitting antenna; It is characterized in that: the upper and lower frequency converter in shift frequency relay station and shift frequency terminal station adopts by frequency mixer, SAW (Surface Acoustic Wave) filter, amplifier respectively and integrates the frequency converter module that the integrated circuit (IC) chip ADF 4306-2 of PLL phase-locked loop frequency synthesizer, VCO voltage-controlled oscillator (VCO) constitutes; This module is provided with three binding posts, and one of them is the CF signal input, and one is the constant-temperature crystal oscillator input, and another is the radiofrequency signal output; The input that local frequency signal of exporting in this module and CF signal are delivered to frequency mixer, the output of frequency mixer is exported as radiofrequency signal behind SAW (Surface Acoustic Wave) filter, amplifier.
The utility model has the advantages that and can use not possessing the place of using the optical fiber repeater condition, noiseless to the base station, can realize the seamless covering of large tracts of land, especially adopt the frequency converter module can make structure simpler, more reliable performance.There is not transmit-receive cofrequency self-excitation problem, the isolation of the antenna feeder of need not worrying.
Below in conjunction with accompanying drawing the utility model is done to describe in detail.
Description of drawings:
Fig. 1 is the utility model theory diagram;
Fig. 2 is a mobile communication shift frequency relay station theory diagram;
Fig. 3 is a mobile communication shift frequency terminal station theory diagram;
Fig. 4 is frequency converter module principle figure;
Fig. 5 is an integrated circuit (IC) chip ADF 4306-2 theory diagram.
Embodiment:
By accompanying drawing as can be known, the mobile communication frequency-shift repeater is made up of the shift frequency relay station of near-end and the shift frequency terminal station of far-end and the microwave antenna of near-end and the microwave antenna and the retransmitting antenna of far-end.The cdma mobile communication frequency-shift repeater is identical on operation principle with GSM mobile communication frequency-shift repeater, and difference is its working frequency range difference, and is succinct in order to narrate, clear, is that example is set forth with GSM900MHz mobile communication frequency-shift repeater below.
The shift frequency relay station comprises that (the 900MHz frequency conversion is 1800MHz for 2 duplexers, upconverter, according to field condition and customer requirements decision frequency conversion frequency, be generally 1800MHz), constant-temperature crystal oscillator, 1800MHz filter, descending 1800MHz power amplifier, up 1800MHz low noise amplifier, low-converter (the 1800MHz frequency conversion is 900MHz), 900MHz filter form.
The shift frequency terminal station comprises 2 duplexers, descending 1800MHz low noise amplifier, low-converter (the 1800MHz frequency conversion is 900MHz), constant-temperature crystal oscillator, 900MHz filter, descending 900MHz power amplifier, up 900MHz low noise amplifier, upconverter (the 900MHz frequency conversion is 1800MHz) 1800MHz filter, up 1800MHz power amplifier composition.
Main devices of the present invention is upconverter, constant-temperature crystal oscillator, low-converter, and the basic composition of frequency converter has three parts: nonlinear device, local oscillator and SAW (Surface Acoustic Wave) filter.Constant-temperature crystal oscillator is local oscillator, its local frequency is 12.8MHz can produce new frequency component according to nonlinear device a principle, when 2 different sinusoidal voltages of frequency act on nonlinear device simultaneously, can produce the multiple combination of frequency component that is formed by 2 incoming frequencies in its output signal, the frequency of establishing 2 sinusoidal voltages is respectively signal carrier frequency f
CWith local frequency f
L, at frequency converter output and frequency f
I=f
L+ f
C, and f
I＞f
CThe time, be called upconverter, at frequency converter output difference frequency f
I=f
L-f
C(f
L＞f
C), and f
I＜f
CThe time, being called low-converter, the SAW (Surface Acoustic Wave) filter in the frequency converter is used for the useless frequency component of filtering.
Mobile communication frequency-shift repeater system operating mode is seen Fig. 1
Frequency-shift repeater makes full use of idle frequency resource, and the GSM frequency range shift frequency of 900MHz is carried out remote some signal transmission to multiple access to the 1800MHz frequency range.The near-end of GSM frequency-shift repeater (shift frequency relay station) is coupled descending F1-900MHz signal shift frequency in the F2-1800MHz frequency range from the base station, be transferred to far-end (shift frequency terminal station) by the big line of microwave, far-end (shift frequency terminal station) is reduced into the F1-900MHz downstream signal to the F2-1800MHz microwave signal that receives the area of coverage is carried out omnidirectional's covering; The far-end of GSM frequency-shift repeater (shift frequency terminal station) receives the up F1-900MHz signal of area of coverage mobile phone shift frequency to the F2-1800MHz frequency range, be transferred to near-end (shift frequency relay station) by microwave antenna, near-end (shift frequency relay station) is reduced into the F1-900MHz upward signal to the F2-1800MHz microwave transmission signal that receives and is coupled to the base station.Thereby realize the remote large-area covering of GSM900MHz signal.
Mobile communication shift frequency relay station operation principle is seen Fig. 2
The 900MHz downstream signal of GSM base station is coupled to duplexer through coupler, extract downstream signal, deliver to upconverter, through upconverter with 900MHz signal shift frequency to 1800MHz, this signal again through the 1800MHz filter with the unwanted signal filtering, after entering the amplification of 1800MHz power amplifier again, through duplexer the 1800MHz signal is delivered to microwave antenna, this antenna must be aimed at the 1800MHz microwave antenna in shift frequency terminal station, the 900MHz downstream signal of base station, and is received by the wireless microwave antenna that is sent to the shift frequency terminal station of microwave antenna to the 1800MHz signal through shift frequency relay station shift frequency like this.
Simultaneously, the microwave antenna of shift frequency relay station receives the 1800MHz upward signal that send in the shift frequency terminal station, extract the 1800MHz signal to up 1800MHz low noise amplifier through duplexer, amplify the back to low-converter, through low-converter 1800MHz signal shift frequency is returned 900MHz, this signal again through the 900MHz filter with the unwanted signal filtering, enter duplexer again the 900MHz upward signal be sent to the base station.
Mobile communication shift frequency terminal station operation principle is seen Fig. 3
The 1800MHz microwave antenna in shift frequency terminal station receives the 1800MHz downstream signal that shift frequency relay station 1800MHz microwave antenna sends, extract the 1800MHz downstream signal through duplexer and deliver to the descending low noise amplifier of 1800MHz, amplify the back to low-converter, through low-converter with 1800MHz signal shift frequency to 900MHz, this signal again through the 900MHz filter with the unwanted signal filtering, after entering the amplification of 900MHz downlink power amplifier again, extract the 900MHz downstream signal through duplexer and deliver to retransmitting antenna, retransmitting antenna covers the blind area.
Simultaneously, the 900MHz retransmitting antenna receives the 900MHz upward signal that mobile phone is sent, extract the 900MHz upward signal through duplexer and deliver to the up low noise amplifier of 900MHz, amplify the back to upconverter, through upconverter with 900MHz signal shift frequency to 1800MHz, this signal again through the 1800MHz filter with the unwanted signal filtering, after entering the 1800MHz power amplifier again and amplifying, deliver to the 1800MHz microwave antenna through duplexer, upward signal is sent to the shift frequency relay station.
Frequency converter module operation principle is seen Fig. 4, Fig. 5
The frequency converter module has 3 SMA external cabling terminals, is respectively signal carrier frequency f
CSignal (12.8MHz) that input, constant-temperature crystal oscillator produce and the radiofrequency signal f after the frequency conversion
IOutput.Main circuit has frequency mixer, and frequency mixer is a nonlinear device, can produce new frequency component, and frequency mixer is made up of chip RMS-11X and peripheral circuit, 1 terminal input signal carrier frequency f of frequency mixer
C, 4 terminals inputs local frequency f
L, after the 2 terminals output frequency conversion with frequently and difference frequency.
ADF 4306-2 produces local frequency f
L, it is the integrated circuit (IC) chip that integrates PLL phase-locked loop frequency synthesizer, VCO voltage-controlled oscillator (VCO), and this chip operating voltage is 3～3.6V, can drop-downly enter energy-saving mode obsolete the time, and its operation principle is as shown in Figure 5.It is that to be designed to be applied to centre frequency be 2GHz, can realize optional frequency F from 1850MHz～2150MHz by serial port programming
VCO=N * (F
Crystal oscillator/ R), in addition can be with output frequency 2 frequency divisions, thereby can obtain radio frequency output 925MHz～1075MHz, and can realize power output from-6dBm～-variation of 13dBmd, the control section of this chip is finished by single-chip microcomputer, chip 16 terminals need provide 10MHz above crystal oscillator, provide the constant frequency of 12.8MHz as a reference source by the constant-temperature crystal oscillator module, 4 Single-chip Controlling line (CE also need be provided, LE, CLK, DATA), the N of chip internal, the R register needs by 3 line (LE, CLK, DATA) serial ports is finished, at first select CE to be changed to high voltage sheet, move the LE Enable Pin to high potential by electronegative potential, provide lasting periodic signal by single-chip microcomputer to chip 17 terminal CLK, rising edge begins to transmit data, trailing edge transmits and finishes, chip 18 terminal DATA provide R, the data of N register under the control of CLK, transmit in the mode of serial, register R is 14, (P * B)+A, P are 8/16/32 optional to register N=, and B is 2
13, A is 2
5By programming crystal oscillator frequency R frequency division is entered the input of PFD phase frequency comparator, the output of VCO voltage-controlled oscillator (VCO) is through behind the Fractional-N frequency, also enter another input of PFD phase frequency comparator, two input signals carry out the phase bit comparison, produce a voltage and remove to control charge pump, chip 24 terminal output currents pass through low pass filter and change into voltage signal and import from chip 7 terminals, the output frequency of control VCO, through comparing repeatedly, proofreading and correct repeatedly, have only when both frequencies equate, finally realize the locking of frequency, the frequency F of VCO output
OUT=N * F
PFDBe local frequency f
L
The multiple combination of frequency component of frequency mixer output is exported and frequency f at frequency converter after amplifier 05 amplifies through the useless frequency component of SAW (Surface Acoustic Wave) filter SAW filtering
I=+f
C, and f
I＞f
CThe time, be upconverter, at frequency converter output difference frequency f
I=f
L-f
C(f
L＞f
C), and f
I＜f
CThe time, be low-converter.
Claims (2)
1, a kind of mobile communication frequency-shift repeater, it comprises the shift frequency terminal station of the shift frequency relay station of near-end and far-end and is located at microwave antenna and the microwave antenna and the retransmitting antenna that are located on the shift frequency terminal station on the shift frequency relay station; The shift frequency relay station comprises two duplexers and places down link and the up link that is made of upconverter, filter, power amplifier and low noise amplifier, low-converter, filter respectively between two duplexers, between upconverter and low-converter, be provided with the constant-temperature crystal oscillator circuit, one of two duplexer links to each other with the base station through coupler, and another links to each other with microwave antenna; The shift frequency terminal station comprises two duplexers and places down link and the up link that is made of low noise amplifier, low-converter, filter, power amplifier and low noise amplifier, upconverter, filter, power amplifier respectively between two duplexers, between upconverter and low-converter, be provided with the constant-temperature crystal oscillator circuit, one of two duplexer links to each other with microwave antenna, and another links to each other with retransmitting antenna; It is characterized in that: the upper and lower frequency converter in shift frequency relay station and shift frequency terminal station adopts by frequency mixer, SAW (Surface Acoustic Wave) filter, amplifier respectively and integrates the frequency converter module that the integrated circuit (IC) chip ADF 4306-2 of PLL phase-locked loop frequency synthesizer, VCO voltage-controlled oscillator (VCO) constitutes; This module is provided with three binding posts, and one of them is the CF signal input, and one is the constant-temperature crystal oscillator input, and another is the radiofrequency signal output; The input that local frequency signal of exporting in this module and CF signal are delivered to frequency mixer, the output of frequency mixer is exported as radiofrequency signal behind SAW (Surface Acoustic Wave) filter, amplifier.
2, mobile communication frequency-shift repeater as claimed in claim 1, it is characterized in that: frequency mixer is made up of chip RMS-11X and peripheral circuit, 1 terminal input signal carrier frequency f of frequency mixer
C, 4 terminals input local frequency f
L, after the 2 terminals output frequency conversion with frequently and difference frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091217 CN2819658Y (en) | 2005-06-09 | 2005-06-09 | Mobile telecommunication frequency-shift direct broadcast station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520091217 CN2819658Y (en) | 2005-06-09 | 2005-06-09 | Mobile telecommunication frequency-shift direct broadcast station |
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| Publication Number | Publication Date |
|---|---|
| CN2819658Y true CN2819658Y (en) | 2006-09-20 |
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ID=37005719
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520091217 Expired - Fee Related CN2819658Y (en) | 2005-06-09 | 2005-06-09 | Mobile telecommunication frequency-shift direct broadcast station |
Country Status (1)
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207852B (en) * | 2006-12-21 | 2010-09-15 | 京信通信技术(广州)有限公司 | Straight amplification station for self-adapting eliminating self excitation disturbance |
| WO2011110111A1 (en) * | 2010-08-16 | 2011-09-15 | 华为技术有限公司 | Wireless transmission device and self-checking method thereof |
| CN102204402A (en) * | 2011-05-25 | 2011-09-28 | 华为技术有限公司 | Base station equipment and signal transmission method thereof |
| CN101534147B (en) * | 2009-04-29 | 2013-01-09 | 重庆四联微电子有限公司 | Frequency conversion relay device and multi-terminal equipment access system based on frequency conversion relay |
| CN103165967A (en) * | 2011-12-14 | 2013-06-19 | 景略半导体(上海)有限公司 | Coupler and public transmission system based on repeater room subsystem |
| CN103220687A (en) * | 2013-04-11 | 2013-07-24 | 四川邮科通信技术有限公司 | Multi-standard type category 5 cable home-entry covering system |
| CN104301022A (en) * | 2014-10-28 | 2015-01-21 | 成都锐新科技有限公司 | Microwave communication device based on UHF frequency bands |
| CN104363027A (en) * | 2014-10-28 | 2015-02-18 | 成都锐新科技有限公司 | Microwave frequency hopping transceiver |
| CN104469990A (en) * | 2014-11-21 | 2015-03-25 | 北京佰才邦技术有限公司 | Wireless communication method and device |
| CN109560827A (en) * | 2018-12-19 | 2019-04-02 | 重庆邮电大学 | The miniature frequency-shift repeater of VHF wave band DMB |
| CN111866900A (en) * | 2020-06-28 | 2020-10-30 | 四川省大见通信技术有限公司 | Frequency shift mobile communication indoor microdistribution system, method and application |
-
2005
- 2005-06-09 CN CN 200520091217 patent/CN2819658Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101207852B (en) * | 2006-12-21 | 2010-09-15 | 京信通信技术(广州)有限公司 | Straight amplification station for self-adapting eliminating self excitation disturbance |
| CN101534147B (en) * | 2009-04-29 | 2013-01-09 | 重庆四联微电子有限公司 | Frequency conversion relay device and multi-terminal equipment access system based on frequency conversion relay |
| WO2011110111A1 (en) * | 2010-08-16 | 2011-09-15 | 华为技术有限公司 | Wireless transmission device and self-checking method thereof |
| US8665938B2 (en) | 2010-08-16 | 2014-03-04 | Huawei Technologies Co., Ltd. | Wireless transmission apparatus and self-checking method of wireless transmission apparatus |
| CN102204402B (en) * | 2011-05-25 | 2013-08-28 | 华为技术有限公司 | Base station equipment and signal transmission method thereof |
| CN102204402A (en) * | 2011-05-25 | 2011-09-28 | 华为技术有限公司 | Base station equipment and signal transmission method thereof |
| CN103165967A (en) * | 2011-12-14 | 2013-06-19 | 景略半导体(上海)有限公司 | Coupler and public transmission system based on repeater room subsystem |
| CN103165967B (en) * | 2011-12-14 | 2016-01-06 | 景略半导体(上海)有限公司 | A kind of coupler and the common transport system based on repeater room subsystem |
| CN103220687A (en) * | 2013-04-11 | 2013-07-24 | 四川邮科通信技术有限公司 | Multi-standard type category 5 cable home-entry covering system |
| CN104301022A (en) * | 2014-10-28 | 2015-01-21 | 成都锐新科技有限公司 | Microwave communication device based on UHF frequency bands |
| CN104363027A (en) * | 2014-10-28 | 2015-02-18 | 成都锐新科技有限公司 | Microwave frequency hopping transceiver |
| CN104469990A (en) * | 2014-11-21 | 2015-03-25 | 北京佰才邦技术有限公司 | Wireless communication method and device |
| CN109560827A (en) * | 2018-12-19 | 2019-04-02 | 重庆邮电大学 | The miniature frequency-shift repeater of VHF wave band DMB |
| CN111866900A (en) * | 2020-06-28 | 2020-10-30 | 四川省大见通信技术有限公司 | Frequency shift mobile communication indoor microdistribution system, method and application |
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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: 20130609 |