CN109212487B - Dual-band integrated TR (transmitter-receiver) assembly - Google Patents
Dual-band integrated TR (transmitter-receiver) assembly Download PDFInfo
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- CN109212487B CN109212487B CN201811129592.1A CN201811129592A CN109212487B CN 109212487 B CN109212487 B CN 109212487B CN 201811129592 A CN201811129592 A CN 201811129592A CN 109212487 B CN109212487 B CN 109212487B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a dual-band integrated TR component, which comprises a triangular wave generator, a VCO (voltage controlled oscillator) source, a 4-time frequency multiplier, a 32GHz filter, a first circulator, a first mixer, a 2-time frequency multiplier, a 64GHz filter, a second circulator, a second mixer and a dual-mode feed source antenna, wherein the VCO source is an 8GHz frequency source, the VCO source generates a 32GHz signal after passing through the 4 frequency multiplier, and one 8GHz source is adopted to respectively generate millimeter waves of two frequency bands of 32GHz and 64GHz by a frequency multiplication technology.
Description
Technical Field
The invention relates to the field of millimeter wave application, in particular to a dual-band integrated TR component.
Background
Along with the rapid development of the fields of satellites, electronic countermeasure, radars, precise guidance and the like, the requirements for miniaturization and integration development of TR components and subsystems are higher and higher. The existing TR component has the design difficulties of further volume reduction, weight reduction, function integration level improvement, 100 percent localization and the like. There is a need to find ways to implement TR modules with smaller size, lighter weight, and higher integration.
Disclosure of Invention
The invention aims to provide a dual-band integrated TR component, aiming at taking the excellent performance of millimeter waves and a detection mode with improved anti-interference capability into consideration, greatly improving the guidance of modern weapons and the reliability of a detected target, realizing the integration of an atmospheric window/a non-atmospheric window by adopting 32GHz and 64GHz dual-bands, improving the anti-interference capability, and reducing the cost and the volume by adopting an 8GHz source to respectively generate the millimeter waves of the 32GHz and 64GHz bands through a frequency doubling technology.
A dual-band integrated TR component comprises a triangular wave generator, a VCO source, a 4-time frequency multiplier, a 32GHz filter, a first circulator, a first mixer, a 2-time frequency multiplier, a 64GHz filter, a second circulator, a second mixer and a dual-mode feed source antenna;
the triangular wave generator is connected with a VCO source, the VCO source is further connected with a 4-time frequency multiplier, the 4-time frequency multiplier is further connected with a 32GHz filter and a 2-time frequency multiplier, the 32GHz filter is further connected with a first circulator and a first mixer, the first circulator is further connected with a first mixer and a dual-mode feed antenna, the 2-time frequency multiplier is further connected with a 64GHz filter, the 64GHz filter is further connected with a second circulator and a second mixer, and the second circulator is further connected with a second mixer and the dual-mode feed antenna;
the VCO source is an 8GHz frequency source, and generates a 32GHz signal after passing through a 4-frequency multiplier, wherein one path of signal is transmitted to the dual-mode feed source antenna through the 32GHz filter and the circulator I, and the fed back signal is transmitted to the mixer I through the circulator I to output a 32GHz difference frequency signal 1;
the other path of signal is multiplied to 64GHz after passing through a 2 frequency multiplier, the signal frequency is changed into 64GHz, the 64GHz signal is transmitted to the dual-mode feed source antenna through a 64GHz filter and a circulator II, the fed back signal is output to a mixer II through a circulator II to output a 64GHz difference frequency signal 2, and therefore the dual-band receiving and transmitting function is achieved through one TR component.
Preferably, the triangular wave generator uses a triangular wave as a carrier signal and adopts an LFMCW frequency modulation system.
Preferably, the VCO source is a signal source of 8GHz, the receiving and transmitting of two millimeter wave VCOs 32GHz and 64GHz are realized through a 4-time frequency multiplier and a 2-time frequency multiplier, and the cost and the volume of the TR component are reduced.
Preferably, the signal from the 32GHz filter is divided into 2 paths of signals after being multiplied by the frequency multiplier by 4 times, wherein one path of signal is sent to the first circulator, and the other path of signal is sent to the first mixer.
Preferably, the signal from the 64GHz filter is multiplied by the frequency of the frequency by 2 times and then divided into 2 paths of signals, wherein one path of signals goes to the second circulator and the other path of signals goes to the second mixer.
Preferably, the dual-mode feed antenna is a dual-path antenna integrating receiving and transmitting, and can simultaneously receive and transmit 32GHz signals and 64GHz signals.
Preferably, 2 groups of signals from the 32GHz filter and the circulator I are subjected to mixing processing in the mixer I, and differential frequency signals of 1-3 GHz are output.
Preferably, the 2 sets of signals from the 64GHz filter and the second circulator are mixed in the second mixer, and a difference frequency signal of 1 to 3GHz is output.
The invention has the advantages that: in order to give consideration to the detection modes of the excellent performance and the improved anti-interference capability of the millimeter waves and greatly improve the reliability of guidance and detection targets of modern weapons, the integration of an atmospheric window/a non-atmospheric window is realized by adopting 32GHz and 64GHz dual-frequency bands, the anti-interference capability is improved, the millimeter waves of the 32GHz and 64GHz bands are respectively generated by adopting an 8GHz source through a frequency doubling technology, and the cost and the volume are reduced.
Drawings
FIG. 1 is a functional block diagram of a dual band integrated TR assembly of the present invention;
101, a triangular wave generator, 102, a VCO source, 103, 4-time frequency multipliers, 104, 32GHz filters, 105, a first circulator, 106, a first mixer, 107, 2-time frequency multipliers, 108, 64GHz filters, 109, a first circulator, 110, a first mixer, 111 and a dual-mode feed antenna.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.
The first embodiment is as follows:
as shown in fig. 1, a dual-band integrated TR module is characterized in that: the double-frequency-multiplication double-frequency feed antenna comprises a triangular wave generator 101, a VCO source 102, a 4-time frequency multiplier 102, a 32GHz filter 104, a circulator I105, a mixer I106, a 2-time frequency multiplier 107, a 64GHz filter 108, a circulator II 109, a mixer II 110 and a double-mode feed antenna 111;
the triangular wave generator 101 is connected with a VCO source 102, the VCO source 102 is further connected with a 4-time frequency multiplier 103, the 4-time frequency multiplier 103 is further connected with a 32GHz filter 104 and a 2-time frequency multiplier 107, the 32GHz filter 104 is further connected with a circulator I105 and a mixer I106, the circulator I105 is further connected with a mixer I106 and a dual-mode feed antenna 111, the 2-time frequency multiplier 107 is further connected with a 64GHz filter 108, the 64GHz filter 108 is further connected with a circulator II 109 and a mixer II 110, and the circulator II 109 is further connected with a mixer II 110 and the dual-mode feed antenna 111;
the VCO source 102 is an 8GHz frequency source, the VCO source 102 generates a 32GHz signal after passing through a 4-frequency multiplier 103, wherein one path of signal passes through a 32GHz filter 104 and a circulator I105 to a dual-mode feed antenna 111 for transmitting the 32GHz signal, and the fed back signal passes through the circulator I105 to a mixer I106 to output a 32GHz difference frequency signal 1;
the other path of signal is multiplied to 64GHz after passing through a 2 frequency multiplier 107, the signal frequency is changed into 64GHz, the 64GHz signal is transmitted to a dual-mode feed antenna 111 through a 64GHz filter 108 and a circulator II 109, the fed back signal is transmitted to a mixer II 110 through the circulator II 109, and a 64GHz difference frequency signal 2 is output, so that the dual-band receiving and transmitting function is realized through one TR component.
The LFMCW frequency modulation signs are adopted, two millimeter wave VCO are realized through one 8GHz VCO, the cost and the size are reduced, an atmospheric window/non-atmospheric window are combined, and the anti-interference performance of signals is improved. Therefore, the dual-band transceiving function is realized through one TR component.
Example two:
as shown in fig. 1, a dual-band integrated TR module is characterized in that: the VCO source 102 is an 8GHz frequency source, the VCO source 102 generates a 32GHz signal after passing through a 4-time multiplier 103, wherein one path of signal passes through the 32GHz filter 104 and the circulator I105 to transmit the 32GHz signal to the dual-mode feed antenna 111, and the fed back signal passes through the circulator I105 to the mixer I106 to output a 32GHz difference frequency signal 1;
the other path of signal is multiplied to 64GHz after passing through a 2 frequency multiplier 107, the signal frequency is changed into 64GHz, the 64GHz signal is transmitted to a dual-mode feed antenna 111 through a 64GHz filter 108 and a circulator II 109, the fed back signal is transmitted to a mixer II 110 through the circulator II 109, and a 64GHz difference frequency signal 2 is output, so that the dual-band receiving and transmitting function is realized through one TR component.
The VCO source 102 is connected to a triangular wave generator 101, and uses a LFMCW frequency modulation system with the triangular wave as a carrier signal.
The VCO source 102 is an 8GHz signal source, and the 4-time frequency multiplier 103 and the 2-time frequency multiplier 107 are used for realizing the transceiving of two millimeter wave VCOs (VCO) at 32GHz and 64GHz, so that the cost and the volume of the TR (transmitter-receiver) component are reduced.
The signal from the 32GHz filter 104 is divided into 2 paths of signals after being multiplied by the frequency multiplier 103 by 4 times, wherein one path of signals goes to the first circulator 105 and the other path of signals goes to the first mixer 106.
The signal from the 64GHz filter 108 is multiplied by the frequency 107 by 2 times and then divided into 2 paths of signals, one path of signal goes to the second circulator 109, and the other path of signal goes to the second mixer 110.
The dual-mode feed antenna 111 is a dual-path antenna integrating receiving and transmitting, and can simultaneously receive and transmit 32GHz signals and 64GHz signals.
And 2 groups of signals from the 32GHz filter and the first circulator are subjected to mixing processing in the first mixer, and a difference frequency signal of 1-3 GHz is output. Facilitating subsequent signal processing.
And 2 groups of signals from the 64GHz filter and the second circulator are subjected to mixing processing in the second mixer, and a difference frequency signal of 1-3 GHz is output. Facilitating subsequent signal processing.
The cost and the volume are reduced, and 100 percent of domestic products can be realized.
The specific implementation mode and principle are as follows:
the dual-band integrated TR component adopts an LFMCW frequency modulation system, and generates triangular waves as carrier waves of signals through a triangular wave generator 101. The VCO source 102 is an 8GHz signal source, frequency multiplication is carried out through the 4-time frequency multiplier 102 firstly, the frequency is multiplied to a 32GHz signal source, the 32GHz signal source is divided into two paths, one path is multiplied to the 2-time frequency multiplier 107, the frequency is multiplied to a 64GHz signal source, the other path is connected to the 32GHz filter 104, the 32GHz signal is transmitted to the dual-mode feed antenna 111 through the first circulator 105, the dual-mode feed antenna 111 receives a feedback signal and transmits the feedback signal to the first mixer 106 through the first circulator 105, the first mixer 106 carries out frequency mixing processing on the signals received by the 32GHz filter 104 and the first circulator 105, and a difference frequency signal of 1-3 GHz is output to carry out signal processing through the 1 port;
and the other path of signal source multiplied by frequency to 64GHz is transmitted to a 64GHz filter 108, the 64GHz signal is transmitted to a dual-mode feed antenna 111 through a circulator 109, the dual-mode feed antenna 111 receives the feedback signal and transmits the feedback signal to a mixer 110 through a second circulator 109, the mixer 110 mixes the signals received by the 64GHz filter 108 and the second circulator 109, and the output difference frequency signal of 1-3 GHz is output through a 2-port for signal processing. Therefore, the dual-band integrated TR component is realized, and meanwhile, all the components are low in price and small in size, the functions of low cost and small size are realized, and 100% localization can be realized.
Based on the above, in order to give consideration to the detection mode of excellent millimeter wave performance and improved anti-interference capability, the invention greatly improves the reliability of guidance and detection targets of modern weapons, realizes the integration of an atmospheric window/a non-atmospheric window by adopting 32GHz and 64GHz dual-frequency bands, improves the anti-interference capability, and reduces the cost and the volume by adopting an 8GHz source to respectively generate millimeter waves of 32GHz and 64GHz bands through a frequency doubling technology.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (8)
1. A dual-band integrated TR (transmitter-receiver) component is characterized in that: the dual-mode feed antenna comprises a triangular wave generator (101), a VCO source (102), a 4-time frequency multiplier (103), a 32GHz filter (104), a first circulator (105), a first mixer (106), a 2-time frequency multiplier (107), a 64GHz filter (108), a second circulator (109), a second mixer (110) and a dual-mode feed antenna (111);
the triangular wave generator (101) is connected with a VCO source (102), the VCO source (102) is further connected with a 4-time frequency multiplier (103), the 4-time frequency multiplier (103) is further connected with a 32GHz filter (104) and a 2-time frequency multiplier (107), the 32GHz filter (104) is further connected with a circulator I (105) and a mixer I (106), the circulator I (105) is further connected with the mixer I (106) and a dual-mode feed antenna (111), the 2-time frequency multiplier (107) is further connected with a 64GHz filter (108), the 64GHz filter (108) is further connected with a circulator II (109) and a mixer II (110), and the circulator II (109) is further connected with the mixer II (110) and the dual-mode feed antenna (111);
the VCO source (102) is an 8GHz frequency source, the VCO source (102) generates a 32GHz signal after passing through a 4-frequency multiplier (103), wherein one path of signal passes through a 32GHz filter (104) and a circulator I (105) to a dual-mode feed antenna (111) to transmit the 32GHz signal, and the fed back signal passes through the circulator I (105) to a mixer I (106) to output a 32GHz difference frequency signal (1);
the other path of signal is multiplied to 64GHz after passing through a 2 frequency multiplier (107), the signal frequency is changed to 64GHz, then the signal is transmitted to a dual-mode feed antenna (111) through a 64GHz filter (108) and a circulator II (109) to carry out 64GHz signal transmission, and the feedback signal is transmitted to a mixer II (110) through the circulator II (109) to output a 64GHz difference frequency signal (2).
2. A dual band integral TR module as claimed in claim 1, wherein: the triangular wave generator (101) takes the triangular wave as a carrier signal and adopts an LFMCW frequency modulation system.
3. A dual band integral TR assembly as claimed in claim 1, wherein: the VCO source (102) is an 8GHz signal source, and the two millimeter wave VCOs, namely the receiving and the transmitting of 32GHz and 64GHz, are realized through a 4-time frequency multiplier (103) and a 2-time frequency multiplier (107).
4. A dual band integral TR module as claimed in claim 1, wherein: the signal from the 32GHz filter (104) is divided into 2 paths of signals after being multiplied by a 4-time frequency multiplier (103), wherein one path of signals goes to a first circulator (105) and the other path of signals goes to a first mixer (106).
5. A dual band integral TR assembly as claimed in claim 1, wherein: the signal from the 64GHz filter (108) is multiplied by a 2-time frequency multiplier (107) and then is divided into 2 paths of signals, wherein one path of signals is sent to a second circulator (109), and the other path of signals is sent to a second mixer (110).
6. A dual band integral TR assembly as claimed in claim 1, wherein: the dual-mode feed antenna (111) is a dual-path antenna integrating receiving and transmitting, and can simultaneously receive and transmit 32GHz signals and 64GHz signals.
7. A dual band integral TR assembly as claimed in claim 1, wherein: 2 groups of signals from the 32GHz filter (104) and the circulator I (105) are subjected to mixing processing in the mixer I (106), and differential frequency signals of 1 to 3GHz are output.
8. A dual band integral TR assembly as claimed in claim 1, wherein: 2 groups of signals from a 64GHz filter (108) and a second circulator (109) are subjected to mixing processing in a second mixer (110), and differential frequency signals of 1 to 3GHz are output.
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Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4926185A (en) * | 1988-10-26 | 1990-05-15 | Hughes Aircraft Company | Multiple radio frequency single receiver radar operation |
| US5128683A (en) * | 1991-04-16 | 1992-07-07 | General Electric Company | Radar system with active array antenna, elevation-responsive PRF control, and beam multiplex control |
| EP0895366A1 (en) * | 1997-07-31 | 1999-02-03 | Alcatel | Spread spectrum transmitter/receiver |
| DE602006021172D1 (en) * | 2005-06-02 | 2011-05-19 | Lockheed Corp | ELECTRONICALLY REMOVED MILLIMETER SHAFT ANTENNA |
| DE102008010772A1 (en) * | 2008-02-25 | 2009-08-27 | Rst Raumfahrt Systemtechnik Gmbh | Synthetic aperture radar and method of operating a synthetic aperture radar |
| CN101583206B (en) * | 2009-05-27 | 2011-05-11 | 中兴通讯股份有限公司 | TD-SCDMA dual-card dual-standby mobile terminal |
| CN201536365U (en) * | 2009-11-04 | 2010-07-28 | 南京才华科技集团有限公司 | L-frequency band double-frequency microwave transceiver module |
| CN101888256B (en) * | 2010-04-01 | 2012-11-28 | 华东师范大学 | Multi-mode multi-frequency multi-application direct frequency conversion wireless transceiver |
| CN101866018B (en) * | 2010-05-27 | 2012-09-05 | 中国科学院上海微系统与信息技术研究所 | Radio frequency receiving and transmitting front end for millimeter wave holographic imaging security check system |
| CN102074780B (en) * | 2010-12-21 | 2013-06-12 | 西安三元达海天天线有限公司 | Three-mode dual-channel antenna for TD-GSM-LTE |
| CN102135629A (en) * | 2010-12-21 | 2011-07-27 | 中国科学院上海微系统与信息技术研究所 | Millimeter wave transceiving module for holographic imaging safety inspection system |
| US9000974B2 (en) * | 2012-09-10 | 2015-04-07 | Honeywell International Inc. | Systems and methods for frequency-modulation continuous-wave and pulse-compression transmission operation |
| CN203492012U (en) * | 2013-09-06 | 2014-03-19 | 安徽天兵电子科技有限公司 | X frequency band emission assembly |
| CN204214961U (en) * | 2014-09-19 | 2015-03-18 | 南京长峰航天电子科技有限公司 | A kind of Miniaturized multiband airplane jamming simulator |
| DE102014220513A1 (en) * | 2014-09-30 | 2016-04-14 | Siemens Aktiengesellschaft | Multi-channel radar and multi-channel radar system |
| US9954265B2 (en) * | 2014-11-26 | 2018-04-24 | Zte Corporation | Two-transmitter two-receiver antenna coupling unit for microwave digital radios |
| CN204679626U (en) * | 2015-05-29 | 2015-09-30 | 成都爱科特科技发展有限公司 | A kind of wireless beacon system of launching S/X two-band |
| CN105068055B (en) * | 2015-07-28 | 2017-11-10 | 武汉大学 | The control method of the digital linear frequency modulation radar of double frequency |
| CN105812019B (en) * | 2016-04-29 | 2019-08-02 | 湖北工业大学 | Zero notch bandwidth of one kind is adaptively from leakage signal suppressing method |
| CN106100648B (en) * | 2016-07-29 | 2019-02-26 | 北京慧清科技有限公司 | Two-band double antenna receiving and transmitting front end circuit system |
| CN106506099B (en) * | 2016-10-28 | 2019-03-26 | 中国人民解放军海军北海舰队航空兵航空仪器计量站 | A kind of device and method for digital T/R component environment experimental test |
| CN106980109B (en) * | 2017-05-03 | 2020-11-03 | 四川九洲防控科技有限责任公司 | Multi-subarray low-altitude radar |
| CN107589423B (en) * | 2017-07-31 | 2020-11-13 | 安徽四创电子股份有限公司 | Pitching electric scanning weather radar system and working method thereof |
| CN108055057A (en) * | 2017-11-14 | 2018-05-18 | 芜湖博高光电科技股份有限公司 | A kind of two waveband active-passive composite TR components |
| CN108107425A (en) * | 2017-12-12 | 2018-06-01 | 芜湖博高光电科技股份有限公司 | A kind of millimetre-wave radar measurement sensor for mining area |
| CN107991652A (en) * | 2017-12-12 | 2018-05-04 | 芜湖博高光电科技股份有限公司 | A kind of main passive millimeter wave compound detection system of two waveband |
-
2018
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