CN203287518U - Frequency-modulated continuous wave transmitting and receiving module - Google Patents
Frequency-modulated continuous wave transmitting and receiving module Download PDFInfo
- Publication number
- CN203287518U CN203287518U CN2013202054469U CN201320205446U CN203287518U CN 203287518 U CN203287518 U CN 203287518U CN 2013202054469 U CN2013202054469 U CN 2013202054469U CN 201320205446 U CN201320205446 U CN 201320205446U CN 203287518 U CN203287518 U CN 203287518U
- Authority
- CN
- China
- Prior art keywords
- signal
- continuous wave
- frequency
- frequency modulation
- transmitting
- 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
Links
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model discloses a frequency-modulated continuous wave transmitting and receiving module which transmits a frequency-modulated continuous wave and receives a reflection echo to carry out measurement. The frequency-modulated continuous wave transmitting and receiving module comprises a signal transmitting channel and a signal receiving channel connected with the signal transmitting channel, wherein the signal transmitting channel is used for generating and transmitting a frequency-modulated continuous wave, the signal receiving channel is used for receiving an echo signal formed through reflection of the frequency-modulated continuous wave so as to generate a difference frequency signal of which frequency is directly proportional to measured distance and speed, and measurement can be implemented after the difference frequency signal is processed. The transmitting and receiving module disclosed by the utility model adopts mutually-independent antennas in signal transmitting and receiving processes. The signal transmitting and receiving isolation degree of the transmitting and receiving module is greatly improved compared with that of a single-antenna structure adopting a circulator. In addition, as an automatic gain control circuit unit is added behind an intermediate-frequency filter circuit in the transmitting and receiving module, the receiving dynamic range of the transmitting and receiving module is up to 96dB (-94dBm to 2dBm), and the operating range of the transmitting and receiving module is greatly improved.
Description
Technical field
The utility model belongs to microwave technical field, particularly, relates to a kind of Continuous Wave with frequency modulation transceiver module, can be widely used in the high precision radar range finding speed measuring equipments such as level measuring, radar velocity measurement, automobile collision avoidance radar.
Background technology
Continuous Wave with frequency modulation (FMCW) transceiver module is a kind of microwave transmitting and receiving assembly of special shape, and it is in the front end of radar system, mainly realize the FMCW signal generation, transmit and receive.The quality of its technical indicator directly affects the overall performance of system, is the key component in radar system.
Present Continuous Wave with frequency modulation (FMCW) transceiver module has generally adopted the single antenna construction of transmit-receive sharing common antenna, for example in patent documentation 01211040.X, a kind of millimeter-wave automotive anti-collision radar device has been proposed, its transceiver module has partly adopted waveguide junction circulator to realize the transmit-receive sharing common antenna, and its intermediate-frequency section does not adopt automatic gain to control (AGC) technology.
Due at the very high microwave frequency band of frequency, circulator will realize that high-isolation is very difficult.Therefore, the single antenna construction transmitting-receiving subassembly described in patent documentation 01211040.X is difficult to realize high receive-transmit isolation.In addition, the FMCW transceiver module of present stage, generally not integrated automatic gain is controlled (AGC) circuit unit, and the reception dynamic range of transceiver module is little, and the difference frequency output amplitude can reduce with the increase of tested distance, and this can have a strong impact on the operating distance of system.
The utility model content
Above defect or Improvement requirement for prior art, the utility model proposes a kind of Continuous Wave with frequency modulation transceiver module, its receive-transmit isolation is high, the reception dynamic range is large, simple in structure, cost is low, working stability is reliable, be easy to realization, can be widely used in the high precision radar range finding speed measuring equipments such as level measuring, radar velocity measurement, automobile collision avoidance radar.
To achieve these goals, the technical scheme of employing is as follows for the utility model:
A kind of Continuous Wave with frequency modulation transceiver module, it is by the emission Continuous Wave with frequency modulation and receive reflection echo to be used for measurement, it is characterized in that, this Continuous Wave with frequency modulation transceiver module comprises signal transmission channel and connected signal receiving cable, wherein, described signal transmission channel for generation of with the emission Continuous Wave with frequency modulation, described signal receiving cable is used for receiving the described Continuous Wave with frequency modulation reflection echoed signal that forms, thereby and produce the difference frequency signal that frequency is directly proportional to tested distance and speed, can realize after treatment measurement.
Preferably, described signal transmission channel comprises voltage controlled oscillator, power splitter, power amplifier, the first little band-waveguide switch and the emitting antenna that is connected successively, the Continuous Wave with frequency modulation signal that described voltage controlled oscillator produces is divided into two paths of signals after power splitter, wherein a road is after described power amplifier amplifies, by first little band-waveguide switch with its conversion process after by described transmission antennas transmit.
Preferably, the signal after the conversion process of described first little band-waveguide switch refers to described power amplifier is amplified converts TE10 pattern in rectangular waveguide to by Quasi-TEM mode.
Preferably, described signal receiving cable comprises receiving antenna, second little band-waveguide switch, low noise amplifier, the frequency mixer that is connected successively, after running into measured object, the Continuous Wave with frequency modulation of described signal transmission channel emission is reflected, form echoed signal, this echoed signal is after described receiving antenna receives, convert accurate TEM signal to by second little band-waveguide switch, this signal is amplified into frequency mixer through low noise amplifier, carry out mixing with local oscillation signal, can produce the difference frequency signal that frequency is directly proportional to tested distance and speed.
Preferably, described local oscillation signal is another road signal that described power splitter separates.
Preferably, emitting antenna and receiving antenna are separate antenna, to realize high receive-transmit isolation.
Preferably, described Continuous Wave with frequency modulation transceiver module also comprises filtering circuit, and described difference frequency signal is imported into filtering circuit and carries out filtering.
Preferably, described Continuous Wave with frequency modulation transceiver module also comprises automatic gain control circuit, and described filtered output signal is inputted this automatic gain control circuit and controlled to be used for the amplitude of carrying out.
Transceiver module of the present utility model adopts emitting antenna and the separate double horn antenna scheme of receiving antenna to realize the high receive-transmit isolation of transceiver module.Simultaneously, realize the large reception dynamic range of system by add automatic gain control circuit after intermediate frequency filtering.
After transceiver module of the present utility model adopts two-antenna scheme, the receive-transmit isolation of module arrives 90dB, by integrated automatic gain control circuit after intermediate frequency filtering, transceiver module can be stabilized in the 800mV(peak-to-peak value with the difference frequency signal in-94dBm～2dBm scope), the reception dynamic range of system is up to 96dB, and this will improve the operating distance of system greatly.The utility model can be widely used in the high precision radar range finding speed measuring equipments such as level measuring, radar velocity measurement, automobile collision avoidance radar.
Description of drawings
Fig. 1 is the theory diagram of transceiver module of the present utility model;
In figure: 1 voltage controlled oscillator, 2 power splitters, 3 power amplifiers, 4 little band-waveguide switchs, 5 emitting antennas, 6 receiving antennas, 7 little band-waveguide switchs, 8 low noise amplifiers, 9 frequency mixer, 10 intermediate frequency filterings, 11 automatic gain control circuits.
Embodiment
, in order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the FMCW transceiver module of the present embodiment comprises voltage controlled oscillator 1, power splitter 2, power amplifier 3, little band-waveguide switch 4, emitting antenna 5, receiving antenna 6, little band-waveguide switch 7, low noise amplifier 8, frequency mixer 9, intermediate frequency filtering 10 and automatic gain control circuit 11.
Wherein, voltage controlled oscillator 1, power splitter 2, power amplifier 3, little band-waveguide switch 4 and emitting antenna 5 five parts are connected successively, form the signal transmission channel of FMCW transceiver module.The FMCW signal that voltage controlled oscillator 1 produces is divided into two paths of signals after power splitter 2, wherein a road is after power amplifier 3 amplifies, convert it in rectangular waveguide TE10 pattern by Quasi-TEM mode by little band-waveguide switch 4, then launched by emitting antenna 5, an other road is as local oscillator (LO) signal of frequency mixer 9.
Receiving antenna 6, little band-waveguide switch 7, low noise amplifier 8, frequency mixer 9 four parts are connected successively, form the signal receiving cable of FMCW transceiver module.The FMCW signal that transmission channel sends is reflected the formation echoed signal after running into measured target, echoed signal is after receiving antenna 6 receives, convert accurate TEM signal to by little band-waveguide switch 7, this signal produces to the mixing of local oscillator (LO) signal the difference frequency signal that frequency is directly proportional to tested distance and speed by frequency mixer 9 after low noise amplifier 8 amplifies.In order to eliminate the clutter in difference frequency signal, difference frequency signal is imported into filtering circuit 10 and carries out filtering.
Emitting antenna 5 and receiving antenna 6 are separate antenna, for example all can be the double horn antenna, thereby can realize high receive-transmit isolation.
As shown in Figure 1, through filtered difference frequency signal, be input to automatic gain control circuit 11, amplitude output signal is stabilized in the 800mV(peak-to-peak value by automatic gain control circuit).Difference frequency signal after fixed ampllitude is carried out the A/D conversion be translated into the digital signal that comprises distance and velocity information, it is obtainable measurement result that this signal is carried out digital signal processing, realizes measuring.
, by adopting automatic gain control circuit 11 can realize the large reception dynamic range of system, greatly improve the operating distance of system in the utility model.
in the present embodiment, voltage controlled oscillator has adopted the CHV2411aQDG monolithic microwave integrated VCO chip of UMS semiconductor company, power amplifier has adopted the CHA5050-99F monolithic microwave integrated power amplifier of UMS semiconductor company, frequency mixer has adopted the HMC292LC3B chip of Hittite microwave company, low noise amplifier has adopted the CHA2411-QDG monolithic microwave integrated chip of UMS semiconductor company, automatic gain control circuit can be preferably by the binary channels ultra-low noise variable gain amplifier AD604 of ADI company, the automatic gain control circuit that multiplier AD835 and high precision operating amplifier AD711 three parts form, but the utility model is not limited to above-mentioned scope, also can adopt the device of other type.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improve, within all should being included in protection domain of the present utility model.
Claims (8)
1. Continuous Wave with frequency modulation transceiver module, it is by the emission Continuous Wave with frequency modulation and receive reflection echo to be used for measurement, it is characterized in that, this Continuous Wave with frequency modulation transceiver module comprises signal transmission channel and connected signal receiving cable, wherein, described signal transmission channel for generation of with the emission Continuous Wave with frequency modulation, described signal receiving cable is used for receiving the formed echoed signal of described Continuous Wave with frequency modulation reflection, thereby and produce the difference frequency signal that frequency is directly proportional to tested distance and speed, can realize after treatment measurement.
2. Continuous Wave with frequency modulation transceiver module according to claim 1, it is characterized in that, described signal transmission channel comprises voltage controlled oscillator (1), power splitter (2), power amplifier (3), first little band-waveguide switch (4) and the emitting antenna (5) that is connected successively, the Continuous Wave with frequency modulation signal that described voltage controlled oscillator (1) produces is divided into two paths of signals after power splitter (2), wherein a road is after described power amplifier (3) amplifies, by first little band-waveguide switch (4) with its conversion process after by described emitting antenna (5) emission.
3. Continuous Wave with frequency modulation transceiver module according to claim 2, it is characterized in that, the signal after the conversion process of described first little band-waveguide switch (4) refers to described power amplifier (3) is amplified converts TE10 pattern in rectangular waveguide to by Quasi-TEM mode.
4. according to claim 2 or 3 described Continuous Wave with frequency modulation transceiver modules, it is characterized in that, described signal receiving cable comprises the receiving antenna (6) that is connected successively, second little band-waveguide switch (7), low noise amplifier (8), frequency mixer (9), after running into measured object, the Continuous Wave with frequency modulation of described signal transmission channel emission is reflected, form echoed signal, this echoed signal is after described receiving antenna (6) receives, convert accurate TEM signal to by second little band-waveguide switch (7), this signal is amplified into frequency mixer (9) through low noise amplifier (8), carry out mixing with local oscillation signal, can produce the difference frequency signal that frequency is directly proportional to tested distance and speed.
5. Continuous Wave with frequency modulation transceiver module according to claim 4, is characterized in that, emitting antenna (5) and receiving antenna (6) are separate antenna, to realize high receive-transmit isolation.
6. Continuous Wave with frequency modulation transceiver module according to claim 4, is characterized in that, described local oscillation signal is another road signal that described power splitter (2) separates.
7. the described Continuous Wave with frequency modulation transceiver module of any one according to claim 1-3,5 and 6, is characterized in that, described Continuous Wave with frequency modulation transceiver module also comprises filtering circuit (10), and described difference frequency signal is imported into filtering circuit (10) and carries out filtering.
8. Continuous Wave with frequency modulation transceiver module according to claim 7, it is characterized in that, described Continuous Wave with frequency modulation transceiver module also comprises automatic gain control circuit (11), and described filtered output signal is inputted this automatic gain control circuit (11) and controlled to be used for the amplitude of carrying out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202054469U CN203287518U (en) | 2013-04-22 | 2013-04-22 | Frequency-modulated continuous wave transmitting and receiving module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202054469U CN203287518U (en) | 2013-04-22 | 2013-04-22 | Frequency-modulated continuous wave transmitting and receiving module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287518U true CN203287518U (en) | 2013-11-13 |
Family
ID=49543874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202054469U Expired - Lifetime CN203287518U (en) | 2013-04-22 | 2013-04-22 | Frequency-modulated continuous wave transmitting and receiving module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203287518U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821434A (en) * | 2014-11-11 | 2015-08-05 | 协同通信技术有限公司 | Electronic tuning automatic polarization tracking system and operation mode thereof |
| CN105182323A (en) * | 2015-09-15 | 2015-12-23 | 奇瑞汽车股份有限公司 | FMCW radar ranging system |
| CN109412621A (en) * | 2018-11-19 | 2019-03-01 | 中电科仪器仪表有限公司 | A kind of four-way independence fixed ampllitude formula local oscillator function separating device and method |
| CN111610377A (en) * | 2020-04-27 | 2020-09-01 | 宁波锐眼电子科技有限公司 | Antenna test system, method, millimeter wave radar, and computer-readable storage medium |
| CN113093614A (en) * | 2021-04-02 | 2021-07-09 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
| CN113433540A (en) * | 2021-06-16 | 2021-09-24 | 中山大学 | Phase difference detection equipment for FMCW modulation |
| WO2022205825A1 (en) * | 2021-04-02 | 2022-10-06 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
-
2013
- 2013-04-22 CN CN2013202054469U patent/CN203287518U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821434A (en) * | 2014-11-11 | 2015-08-05 | 协同通信技术有限公司 | Electronic tuning automatic polarization tracking system and operation mode thereof |
| CN104821434B (en) * | 2014-11-11 | 2018-08-10 | 协同通信技术有限公司 | Electronic tuning automatic Polarization tracking system and its function mode |
| CN105182323A (en) * | 2015-09-15 | 2015-12-23 | 奇瑞汽车股份有限公司 | FMCW radar ranging system |
| CN109412621A (en) * | 2018-11-19 | 2019-03-01 | 中电科仪器仪表有限公司 | A kind of four-way independence fixed ampllitude formula local oscillator function separating device and method |
| CN111610377A (en) * | 2020-04-27 | 2020-09-01 | 宁波锐眼电子科技有限公司 | Antenna test system, method, millimeter wave radar, and computer-readable storage medium |
| CN113093614A (en) * | 2021-04-02 | 2021-07-09 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
| CN113093614B (en) * | 2021-04-02 | 2022-07-15 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
| WO2022205825A1 (en) * | 2021-04-02 | 2022-10-06 | 北京航天雷特机电工程有限公司 | Microwave generating circuit and microwave generating device |
| CN113433540A (en) * | 2021-06-16 | 2021-09-24 | 中山大学 | Phase difference detection equipment for FMCW modulation |
| CN113433540B (en) * | 2021-06-16 | 2023-12-12 | 中山大学 | Phase difference detection equipment for FMCW modulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203287518U (en) | Frequency-modulated continuous wave transmitting and receiving module | |
| Goppelt et al. | Automotive radar–investigation of mutual interference mechanisms | |
| CN102680963B (en) | Radar apparatus supporting short and long range radar operation | |
| JP4677396B2 (en) | RF transceiver module and millimeter wave FMCW radar sensor using the same | |
| CN102621551A (en) | 77GHz millimeter wave radio frequency device and using method thereof | |
| CN101262239B (en) | Mm wave RF receiving/transmission device | |
| CN110146892B (en) | Dual-polarization radar | |
| KR101287973B1 (en) | Apparatus for checking fmcw(frequency modulated continuous wave) radar | |
| CN203310994U (en) | Millimeter wave automobile anti-collision radar device | |
| CN110133634B (en) | MIMO radar virtual aperture angle measurement method based on frequency division multiplexing technology | |
| CN102680966A (en) | Navigation radar for FMCW (frequency-modulated continuous wave) ship | |
| CN101793964A (en) | 60GHz millimeter-wave automotive anti-collision radar device with digitized temperature compensation | |
| KR100751065B1 (en) | RF transceiver module and millimeterwave FMCW radar sensor using the same | |
| CN114720997B (en) | Large dynamic laser coherent detection device and method for high-speed moving object | |
| CN112255593B (en) | Variable frequency assembly for target classification recognition radar | |
| CN102279397A (en) | Active frequency conversion type LFMCW radar distance-measuring device | |
| KR101658354B1 (en) | Fmcw radar transceiver having dual signal generator | |
| CN104199019A (en) | Continuous wave detector testing system | |
| CN104360318A (en) | Radar front-end module and radar system | |
| CN110568430A (en) | non-blind area ranging method and system for monopulse radar with protection channel | |
| Li et al. | A miniaturized and high frequency response 35GHz FMCW radar for short range target detections | |
| CN112985540B (en) | Split type guided wave radar level gauge based on gated frequency modulated continuous wave | |
| KR20090105752A (en) | Method of transmitting pulse waveform in pulse-compression radar for detection of blind zone, pulse-compression radar using the same and radar network thereof | |
| CN209765034U (en) | X-waveband vehicle-mounted detection radar receiving device | |
| EP2555010B1 (en) | In-car pulse radar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: HUBEI CHUHANG ELECTRONIC TECHNOLOGY CO.,LTD. Assignor: HUBEI SANJIANG SPACE XIANFENG ELECTRONIC&INFORMATION Co.,Ltd. Contract record no.: 2015420000058 Denomination of utility model: Frequency-modulated continuous wave transmitting and receiving module Granted publication date: 20131113 License type: Exclusive License Record date: 20150427 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| CX01 | Expiry of patent term |