CN102752010B - A kind of transceiver module for the base station that communicates - Google Patents
A kind of transceiver module for the base station that communicates Download PDFInfo
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- CN102752010B CN102752010B CN201110100892.9A CN201110100892A CN102752010B CN 102752010 B CN102752010 B CN 102752010B CN 201110100892 A CN201110100892 A CN 201110100892A CN 102752010 B CN102752010 B CN 102752010B
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Abstract
<b>a kind of transceiver module for the base station that communicates belongs to transmitter-receiver, namely emitter and receiving apparatus form a structure entirety, and wherein have at least a part to be used as to launch the device group technique field with receiving function, particularly relate to a kind of transceiver module for the base station that communicates. The present invention provides a kind of and is beneficial to the automatic calibration of system frequency, the transceiver module for the base station that communicates of reliable operation. The present invention comprises receiver, transmitting chain and local oscillator generation circuit, and receiver described in its structure main points has carried out twice frequency conversion, and radiofrequency signal downconverts to intermediate frequency signal, then intermediate frequency signal carries out demodulation generation simulation baseband signal; Described local oscillator generation circuit comprises two the comprehensive devices of frequency, single sideband mixers; Two comprehensive devices of frequency are respectively twice frequency conversion offer local oscillation signal of described receiver, and two comprehensive devices of frequency are that described transmitting chain provides local oscillation signal after carrying out frequency addition by single sideband mixer.</b>
Description
Technical field
The present invention divides by International Patent Classification (IPC) (IPC) and belongs to electric department, the big class of electrical communication technology, transmission group, big group of the selecting arrangement of user is connected by wireless link or induction link, transmitter-receiver, namely emitter and receiving apparatus form a structure entirety, and wherein have at least a part to be used as to launch the device group technique field with receiving function, particularly relate to a kind of transceiver module for the base station that communicates.
Background technology
According to relevant analysis, the speed that the demand of mobile communication data business amount increases by 100 times with every 6-7 is fast-developing. By 2010, having the mobile phone of more than 60% to have the PDA function of access WLAN (wireless local area network), the PDA of more than 40% has the cell-phone function of accessible mobile radio communication. The data business volume of mobile radio communication will reach more than 80%. Estimating 2015, the demand of mobile data services amount will reach current 100-1000 times. In 20 years of the past, International Telecommunication Association is devoted to coordinate the strength of national governments, industry and private sector always, to develop global broadband multi-media international telecommunication system, also it is called IMT (InternationalMobileTelecommunications). Since two thousand, started to be introduced in IMT concept first the standard family grown up. Since in May, 2007, the IMT-2000 user in the whole world has reached 1,000,000,000 more than. " IMT-Advanced " provides a global platform, can release various mobile service of future generation on this platform.
Along with Union Internationale des Telecommunications (InternationalTelecommunicationUnion, ITU) IMT-Advanced(4G) the formal startup of standardized process, each country, international and domestic standardization body, telecom operators, communications equipment manufacturer, scientific research institutions etc. all actively are participating in IMT-Advanced system standard formulation work.According to ITU to the minimum essential requirement target of IMT-Advanced system, IMT-Advanced needs the data speed realizing 100Mbps to 1Gbps, and the radio-frequency front-end performance of system is proposed higher requirement. Currently, the standardization body such as 3GPP, 3GPP2, IETF is actively developing and is working towards IMT-Advanced system standardization.
The number of users of mobile communication is huge, wide market, mobile communication base station is the nucleus equipment of network, and its demand is very big, and wherein the one-tenth our station of radio-frequency apparatus is to about the 30% of whole base station cost, therefore RF receiving and transmission module has huge market outlook.
Mobile communication system is primarily of transfer table, base station sub-system and network subsystem composition. Base station transceiver platform (BTS) and base station controller (BaseStationController) constitute base station sub-system. Complete BTS comprises radio transmitting/receiving apparatus, antenna and all without the distinctive signal processing of line interface. BTS can regard a radio modem as, is responsible for reception and the transmission processing of movable signal. Generally in certain region, multiple subbase station and transmitting-receiving platform form a cellular network mutually, are mutually transmitted by the signal between control transmitting-receiving platform and transmitting-receiving platform and are received, reaching the transmission of mobile communication signal. Automatic calibration difficulties, the working reliability of existing base station transceiver module system frequency are poor, and the routine work for base station causes disadvantageous effect.
Summary of the invention
The present invention is exactly for the problems referred to above, it is provided that a kind of be beneficial to the automatic calibration of system frequency, the transceiver module for the base station that communicates of reliable operation.
For achieving the above object, the present invention adopts following technical scheme, the present invention comprises receiver, transmitting chain and local oscillator generation circuit, receiver described in its structure main points has carried out twice frequency conversion, radiofrequency signal is downconverted to intermediate frequency signal, then intermediate frequency signal is carried out demodulation generation simulation baseband signal; Described local oscillator generation circuit comprises two the comprehensive devices of frequency, single sideband mixers; Two comprehensive devices of frequency are respectively twice frequency conversion offer local oscillation signal of described receiver, and two comprehensive devices of frequency are that described transmitting chain provides local oscillation signal after carrying out frequency addition by single sideband mixer.
As a kind of preferred version, the gain control in receiver of the present invention adopts intermediate frequency variable gain amplifier and simulation base band variable gain amplifier to regulate simultaneously.
As another kind of preferred version, transmitting chain of the present invention adopts Direct Conversion structure, will simulate baseband signal up-conversion to radiofrequency signal.
As another kind of preferred version, transmitting chain of the present invention adopts RF variable gain amplifier to regulate transmitted power.
As another kind of preferred version, intermediate frequency variable gain amplifier of the present invention is two, and two intermediate frequency variable gain amplifiers are connected by intermediate frequency filtering device.
As another kind of preferred version, RF variable gain amplifier of the present invention is two, and two RF variable gain amplifiers are connected.
The useful effect of the present invention: (1) receiver provides local oscillation signal by two comprehensive devices of frequency, the signal that transmitting chain then is produced to be added through single sideband mixing by the two of receiver comprehensive devices of frequency provides local oscillator for emitter, thus ensure that the same frequency receiving and launching carrier wave, it is beneficial to the automatic calibration of system frequency.
(2) receiver of the present invention divides at intermediate frequency and analog baseband section, carries out variable gain amplification to received signal simultaneously, substantially increases gain control scope, and add the handiness of system.
(3) first radiofrequency signal is downconverted to intermediate frequency by the present invention in receiver, and then intermediate frequency signal carries out demodulation generation simulation baseband signal, avoids and receives DC maladjustment effect, adds reliability.
(4) in transmitting chain, adopt the single-conversion scheme that directly simulation baseband signal is modulated to radio frequency carrier wave, decrease device count.
Accompanying drawing explanation
In order to make technical problem solved by the invention, technical scheme and useful effect clearly understand, below in conjunction with the drawings and the specific embodiments, the present invention is further elaborated. It is to be understood that embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
Fig. 1 is principle of the invention figure.
Embodiment
As shown in the figure, the present invention comprises receiver, transmitting chain and local oscillator generation circuit, and receiver described in its structure main points has carried out twice frequency conversion, and radiofrequency signal downconverts to intermediate frequency signal, then intermediate frequency signal carries out demodulation generation simulation baseband signal; Described local oscillator generation circuit comprise the comprehensive device of two frequencies 25,27, single sideband mixer 26; Two comprehensive devices of frequency 25,27 are respectively twice frequency conversion offer local oscillation signal of described receiver, and two comprehensive devices of frequency 25,27 are that described transmitting chain provides local oscillation signal after carrying out frequency addition by single sideband mixer 26.
Gain control in described receiver adopts intermediate frequency variable gain amplifier 9,11 and simulation base band variable gain amplifier 14 to regulate simultaneously.
Described transmitting chain adopts Direct Conversion structure, will simulate baseband signal up-conversion to radiofrequency signal.
Described transmitting chain adopts RF variable gain amplifier 21,22 to regulate transmitted power.
Described intermediate frequency variable gain amplifier 9,11 is two, and two intermediate frequency variable gain amplifiers 9,11 are connected by intermediate frequency filtering device 10;
Described RF variable gain amplifier 21,22 is two, and two RF variable gain amplifiers 21,22 are connected; Expand gain control scope.
Below in conjunction with accompanying drawing, the principle of work of the present invention is done to set forth: at receiver, first wireless signal receives through antenna 1, select to enter reception channel by the control of switch 2, amplify by first entering low-noise amplifier 3 after switch 2, then by bandpass filter 4, through once amplifying and enter low-noise amplifier 5 after filtering and bandpass filter 6 carries out second time and amplifies and filtering, the prevention at radio-frequency port of down coversion device 7 is directly inputted by the radiofrequency signal after twice amplification filtering, the local oscillator port of down coversion device 7 is provided by first step local oscillator 25, after down coversion device 7, signal fades to intermediate frequency by radio frequency, first intermediate frequency signal enters midband bandpass filter 8 and carries out filtering, first step intermediate frequency variable gain amplifier 9 is inputed to after filtering, signal enters into bandpass filter 12 filtering again after second stage intermediate frequency filtering device 10 and second stage intermediate frequency variable gain amplifier 11 subsequently, so far completes amplification and the filtering process of intermediate frequency, the prevention at radio-frequency port of receiving demodulation device 13 is inputed to after IF signal processing, its local oscillator port receives local oscillator 27 by the second stage and provides, signal after demodulation fades to four orthogonal tunnel simulation baseband signals of IQ by the intermediate frequency of single channel, the two paths of differential signals on I road and the two paths of differential signals on Q road input to two variable gain amplifier 14(differential amplifiers) in, after amplifying, input to analog baseband filter 15 carry out low-pass filtering with filter out-band external signal, simulation baseband signal inputs to afterwards after filtering after converting numerary signal in analog to digital converter 16 and gives base band 28 and carry out digital processing.
At transmitting chain, the numerary signal that baseband signal 28 exports inputs to IQ difference No. four low-pass filters 18 after being converted to simulation baseband signal by digital to analog converter 17 carry out filtering, four road signals input to the low frequency input terminal mouth of transmit modulator 19 subsequently, its local oscillator port is produced after single sideband mixer 26 mixing by first step local oscillator 25 and second stage local oscillator 27, its frequency is the frequency sum of two-stage local oscillator, the simulation baseband signal of four road orthogonal differentials is modulated to radio frequency carrier wave and exports by transmit modulator 19, the rear signal of modulation inputs to bandpass filter 20 and carries out filtering, after filtering, signal inputs to first step variable gain amplifier 21 and second stage variable gain amplifier 22 tentatively amplifies, amplified signal is directly inputted to power amplifier 24 after inputing to bandpass filter 23, power amplifier 24 inputs to switch 2 and selects transmitting chain and finally transfer to antenna 1 and launch after rf modulated signal is amplified to the transmitted power of needs.
Local oscillator generation circuit contains and receives first step local oscillator 25, receive second stage local oscillator 27 and single sideband mixing circuit 26, wherein receiver is directly provided by first step local oscillator 25 and second stage local oscillator 27 respectively, transmitting chain is carried out being added generation by first step local oscillator 25 and second stage local oscillator 27 after single sideband mixer 26, thus ensure that transmitting is consistent with reception carrier frequency.
It is understandably, above about the specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention only not it is limited to for illustration of the present invention, it will be understood by those within the art that, still the present invention can be modified or equivalent replace, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meeting.
Claims (3)
1. the transceiver module for the base station that communicates, comprise receiver, transmitting chain and local oscillator generation circuit, it is characterized in that, after described receiver carries out single-conversion, radiofrequency signal downconverts to intermediate frequency signal, then carry out single-conversion and intermediate frequency signal is carried out demodulation produce simulation baseband signal; Described local oscillator generation circuit comprises two the comprehensive devices of frequency (25,27), single sideband mixers (26); Two comprehensive devices of frequency (25,27) are respectively twice frequency conversion offer local oscillation signal of described receiver, and two comprehensive devices of frequency (25,27) are that described transmitting chain provides local oscillation signal after carrying out frequency addition by single sideband mixer (26);
Gain control in described receiver adopts intermediate frequency variable gain amplifier (9,11) and simulation base band variable gain amplifier (14) to regulate simultaneously;
Described transmitting chain adopts Direct Conversion structure, will simulate baseband signal up-conversion to radiofrequency signal;
Described intermediate frequency variable gain amplifier (9,11) is two, and two intermediate frequency variable gain amplifiers (9,11) are connected by intermediate frequency filtering device (10).
2. a kind of transceiver module for the base station that communicates according to claim 1, it is characterised in that described transmitting chain adopts RF variable gain amplifier (21,22) to regulate transmitted power.
3. a kind of transceiver module for the base station that communicates according to claim 2, it is characterised in that described RF variable gain amplifier (21,22) is two, two RF variable gain amplifiers (21,22) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110100892.9A CN102752010B (en) | 2011-04-21 | 2011-04-21 | A kind of transceiver module for the base station that communicates |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110100892.9A CN102752010B (en) | 2011-04-21 | 2011-04-21 | A kind of transceiver module for the base station that communicates |
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| CN102752010A CN102752010A (en) | 2012-10-24 |
| CN102752010B true CN102752010B (en) | 2016-06-15 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103067037B (en) * | 2012-12-28 | 2015-04-08 | 成都泰格微波技术股份有限公司 | Wireless ad hoc network MESH communication module |
| CN103117768B (en) * | 2013-01-25 | 2015-09-23 | 中国科学院微电子研究所 | A kind of wireless transmitter |
| CN104242828A (en) * | 2014-10-17 | 2014-12-24 | 绵阳雷迪创微电子科技有限公司 | Low noise frequency converter |
| CN105933258B (en) * | 2016-06-22 | 2022-12-13 | 安徽天兵电子科技股份有限公司 | Calibration local oscillator module of modularized microwave assembly |
| CN107819489B (en) * | 2017-11-23 | 2019-07-30 | 中国电子科技集团公司第四十一研究所 | A kind of ultra wide band high bandwidth radio-frequency receiving-transmitting two-way integral integration module |
| CN109412619A (en) * | 2018-12-11 | 2019-03-01 | 中国电子科技集团公司第五十四研究所 | A kind of high neighboring trace inhibition radio-frequency transmitter |
| WO2021134638A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳迈瑞生物医疗电子股份有限公司 | Signal transmitting circuit, signal receiving circuit, and portable monitoring device |
| CN113437992A (en) * | 2021-06-30 | 2021-09-24 | 展讯通信（上海）有限公司 | Radio frequency transceiver circuit |
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| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
| CN101425816A (en) * | 2008-09-26 | 2009-05-06 | 中国科学院微电子研究所 | Transceiver used for wireless ultra-wideband and method for transceiving signal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100598437B1 (en) * | 2004-10-22 | 2006-07-11 | 한국전자통신연구원 | Direct-conversion frequency mixer |
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| CN1166728A (en) * | 1995-12-30 | 1997-12-03 | 三星电子株式会社 | Automatic frequency control circuit for digital radio communication system |
| CN1166730A (en) * | 1996-03-22 | 1997-12-03 | 松下电器产业株式会社 | Multiple-band mobile transceiver having smaller number of local oscillators |
| US6028850A (en) * | 1998-07-10 | 2000-02-22 | Hyundai Electronics America, Inc. | Wireless transceiver and frequency plan |
| US6370361B1 (en) * | 1998-10-09 | 2002-04-09 | Industrial Technology Research Institute | Transceiver with a receive/transmit fast switch function |
| CN1454432A (en) * | 2000-08-02 | 2003-11-05 | 科内森特系统公司 | Block communication transceivers with GPS capability |
| EP1795914A1 (en) * | 2005-12-07 | 2007-06-13 | Electronics And Telecommunications Research Institute | RF transceiver module and millimeter-wave FMCW radar sensor using the same |
| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
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| CN102752010A (en) | 2012-10-24 |
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