CN203595674U - Satellite borne dual polarization 150 GHz receiver system - Google Patents
Satellite borne dual polarization 150 GHz receiver system Download PDFInfo
- Publication number
- CN203595674U CN203595674U CN201320706252.7U CN201320706252U CN203595674U CN 203595674 U CN203595674 U CN 203595674U CN 201320706252 U CN201320706252 U CN 201320706252U CN 203595674 U CN203595674 U CN 203595674U
- Authority
- CN
- China
- Prior art keywords
- processing unit
- sub
- signal
- receiver system
- dual polarization
- 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 - Fee Related
Links
Images
Landscapes
- Superheterodyne Receivers (AREA)
Abstract
The utility model provides a satellite borne dual polarization 150 GHz receiver system which is characterized by comprising a feed source, an orthogonal mode coupler, a dichotomy harmonic mixer, an intermediate frequency processing unit, a detector circuit and a low frequency processing unit, wherein the feed source sends a detected signal to the orthogonal mode coupler; the detected signal is separated into a V polarization component signal and a H polarization component signal via the orthogonal mode coupler; the V polarization component signal and the H polarization component signal are respectively sent to a first sub-harmonic mixer and a second sub-harmonic mixer and are respectively mixed with a local oscillator signal; the first sub-harmonic mixer and the second first sub-harmonic mixer are sequentially connected with the intermediate frequency processing unit, the detector circuit and the low frequency processing unit respectively; the intermediate frequency processing unit is used for amplification and filtering; the detector circuit is used for detection; the low frequency processing unit is used for amplification. The satellite borne dual polarization 150 GHz receiver system can reduce the size, weight and technological realization difficulty of a dual polarization 150 GHz receiver, improves the reliability, and is applicable to satellite borne circular cone scanning.
Description
Technical field
The utility model relates to the receiver in microwave remote sensing technique field, particularly a kind of spaceborne dual polarization 150GHz receiver system.
Background technology
Satellite-borne microwave radiometer is a kind of passive microwave remote sensing device, its function be from satellite platform to earth observation, obtain geophysical parameters, be applied to weather forecast and climatological research.Receiver is the core component of radiometer, and it has determined the important indicators such as the receive frequency, bandwidth, sensitivity, the linearity, integral time of radiometer.
150GHz is atmospheric window district frequency, mainly can be used for surveying the key elements such as cirrus, liquid water content and heavy showers, and be the auxiliary detection channels of 183GHz atmospheric humidity sounding passage.
Conventionally, while carrying out the detection of atmospheric exploration humidity with 183GHz, be generally to adopt quasi-optical technique to carry out signal to separate from 150GHz and the 183GHz detectable signal of antenna: take out respectively the signal of above-mentioned two frequencies, take out corresponding V, H polarization components with the aperture plate that polarizes by frequency-selective surfaces.Especially, in across mark scanning application, in order to reduce the weight and volume of quasi-optical equipment, only adopt polarization aperture plate to isolate respectively the H polarization components of 183GHz and the V polarization components of 150GHz.
In the atmospheric humidity sounding take conical scanning as application background, due to quasi-optical shared larger volume and heavier weight, can have a negative impact to rotating part.Therefore needing to adopt the mode of orthomode coupler to carry out V, H polarization components that 150GHz receives signal separates.
Summary of the invention
In order to address the above problem, the spaceborne dual polarization 150GHz of the one receiver system that the utility model provides, is characterized in that, comprises feed, orthomode coupler, two sub-harmonic mixers, IF processing unit, detecting circuit and low frequency processing unit;
Described feed sends detectable signal to described orthomode coupler, described detectable signal is isolated V polarization components signal and H polarization components signal and is sent to respectively the first sub-harmonic mixer and the second sub-harmonic mixer and local oscillation signal mixing through described orthomode coupler and obtains two-way intermediate-freuqncy signal, described the first sub-harmonic mixer and the second sub-harmonic mixer are connected with respectively IF processing unit in turn, detecting circuit, low frequency processing unit, described intermediate-freuqncy signal is amplified and filtering through described IF processing unit, described detecting circuit detection, described low frequency processing unit obtains specific output signal after amplifying.
Preferably, described two sub-harmonic mixers share a local vibration source, and described local vibration source transfers to respectively two sub-harmonic mixers by a power splitter.
What preferably, described the first sub-harmonic mixer and the second sub-harmonic mixer adopted is the working method of subharmonic mixing.
Preferably, described orthomode coupler V passage is connected with described first harmonic frequency mixer, second harmonic frequency mixer respectively with the output of H passage, and described V passage and H passage adopt the direct conversion mode of operation without low noise amplifier.
Preferably, described IF processing unit comprises a wave filter and intermediate frequency amplifier.
Preferably, between described wave filter and sub-harmonic mixer, be provided with low noise amplifier.
Preferably, described detecting circuit comprises a wave detector.
Preferably, described low frequency processing unit comprises low-frequency amplifier.
The spaceborne dual polarization 150GHz receiver system that the utility model provides can reduce volume, the weight of dual polarization 150GHz receiver, and reduction technology realizes difficulty, improves reliability, is applicable to spaceborne conical scanning application.
Accompanying drawing explanation
The spaceborne dual polarization 150GHz receiver system block diagram that Fig. 1 provides for the utility model embodiment.
Embodiment
The utility model provides a kind of spaceborne dual polarization 150GHz receiver system, and as shown in Figure 1, it comprises feed, orthomode coupler, two sub-harmonic mixers, IF processing unit, detecting circuit and low frequency processing unit;
Described feed sends detectable signal to described orthomode coupler, described detectable signal is isolated V polarization components signal and H polarization components signal and is sent to respectively the first sub-harmonic mixer and the second sub-harmonic mixer and local oscillation signal mixing through described orthomode coupler and obtains two-way intermediate-freuqncy signal, described the first sub-harmonic mixer and the second sub-harmonic mixer are connected with respectively IF processing unit in turn, detecting circuit, low frequency processing unit, described intermediate-freuqncy signal is amplified and filtering through described IF processing unit, described detecting circuit detection, described low frequency processing unit obtains specific output signal after amplifying.
In the present embodiment, between described wave filter and sub-harmonic mixer, be provided with low noise amplifier, described IF processing unit comprises a wave filter and intermediate frequency amplifier, and described detecting circuit is a wave detector, and described low frequency processing unit comprises low-frequency amplifier.
Detectable signal is isolated needed V, H polarization noise signal by feed through orthomode coupler, is transferred to and its frequency mixing module that is directly connected, and two-way frequency mixer shares a local vibration source; After sub-harmonic mixer down coversion, produce needed intermediate-freuqncy signal; Amplify and filtering via IF processing unit, detecting circuit, low frequency processing unit integration and amplification, obtain specific noise information.
Noise signal is received and is transferred to orthomode coupler by feed, orthomode coupler is isolated V, H polarization components from feed input signal, and transfers to respectively V, H passage.Compared with quasi-optical technique, this orthomode coupler is much smaller on weight and volume, is applicable to the application of conical scanning.
V, two passages of H adopt local oscillator form altogether, can reduce volume, and have stopped owing to adopting two mutual interference problems that local oscillator may cause.
V, H passage all carry out the direct conversion mode of operation without low noise amplifier, and frequency mixer adopts subharmonic mode.Generally speaking, frequency mixer can utilize local frequency or its higher hamonic wave work.What conventionally adopt is fundamental wave mixing, and this is because the energy of first-harmonic has accounted for the overwhelming majority of gross energy, thereby can obtain less conversion loss, can improve the noise figure of system.When frequency increases, enter particularly short millimeter wave frequency band of millimeter wave, reliable and stable local vibration source is difficult to realize or price costliness especially, therefore needs to adopt subharmonic mixing mode.The frequency of operation of this frequency mixer is the half, 1/4 or even 1/8 of signal frequency, so just can make full use of the high-performance Solid Source of existing microwave frequency band as its local oscillator, overcome the difficulty that direct employing millimeter wave local vibration source brings, reduce radio frequency reception machine technology and realized difficulty, reduce system cost, improve the reliability of system.
V, two passages of H are transformed to intermediate frequency through subharmonic mixing, with filtering, amplification, detection and the low integration of putting, obtain corresponding output signal.
By adopting above-mentioned technological means, can reduce volume, the weight of dual polarization 150GHz receiver, reduction technology realizes difficulty, improves reliability, is applicable to spaceborne conical scanning application.
Above embodiment is only for illustrating content of the present utility model, and except above-mentioned embodiment, the utility model also has other embodiment, and all employings are equal to replaces or the technical scheme that forms of equivalent deformation mode all drops in protection domain of the present utility model.
Claims (6)
1. a spaceborne dual polarization 150GHz receiver system, is characterized in that, comprises feed, orthomode coupler, two sub-harmonic mixers, IF processing unit, detecting circuit and low frequency processing unit;
Described feed sends detectable signal to described orthomode coupler, described detectable signal is isolated V polarization components signal and H polarization components signal and is sent to respectively the first sub-harmonic mixer and the second sub-harmonic mixer and local oscillation signal mixing through described orthomode coupler and obtains two-way intermediate-freuqncy signal, described the first sub-harmonic mixer and the second sub-harmonic mixer are connected with respectively IF processing unit in turn, detecting circuit, low frequency processing unit, described intermediate-freuqncy signal is amplified and filtering through described IF processing unit, described detecting circuit detection, described low frequency processing unit obtains specific output signal after amplifying.
2. spaceborne dual polarization 150GHz receiver system as claimed in claim 1, is characterized in that, described two sub-harmonic mixers share a local vibration source, and described local vibration source transfers to respectively two sub-harmonic mixers by a power splitter.
3. spaceborne dual polarization 150GHz receiver system as claimed in claim 1, is characterized in that, described IF processing unit comprises a wave filter and intermediate frequency amplifier.
4. spaceborne dual polarization 150GHz receiver system as claimed in claim 3, is characterized in that, between described wave filter and sub-harmonic mixer, is provided with low noise amplifier.
5. spaceborne dual polarization 150GHz receiver system as claimed in claim 1, is characterized in that, described detecting circuit comprises a wave detector.
6. spaceborne dual polarization 150GHz receiver system as claimed in claim 1, is characterized in that, described low frequency processing unit comprises low-frequency amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706252.7U CN203595674U (en) | 2013-11-11 | 2013-11-11 | Satellite borne dual polarization 150 GHz receiver system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706252.7U CN203595674U (en) | 2013-11-11 | 2013-11-11 | Satellite borne dual polarization 150 GHz receiver system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203595674U true CN203595674U (en) | 2014-05-14 |
Family
ID=50676543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320706252.7U Expired - Fee Related CN203595674U (en) | 2013-11-11 | 2013-11-11 | Satellite borne dual polarization 150 GHz receiver system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203595674U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378131A (en) * | 2014-10-30 | 2015-02-25 | 西安空间无线电技术研究所 | Terahertz receiving front end and implementation method thereof |
| CN109031467A (en) * | 2018-07-24 | 2018-12-18 | 西安空间无线电技术研究所 | A kind of spaceborne Terahertz ice skies bottom detector system |
| CN110518923A (en) * | 2019-09-16 | 2019-11-29 | 上海航天测控通信研究所 | Radiation receiver |
| CN110726882A (en) * | 2019-10-15 | 2020-01-24 | 博微太赫兹信息科技有限公司 | Dual-polarization radiometer suitable for passive security check instrument |
-
2013
- 2013-11-11 CN CN201320706252.7U patent/CN203595674U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104378131A (en) * | 2014-10-30 | 2015-02-25 | 西安空间无线电技术研究所 | Terahertz receiving front end and implementation method thereof |
| CN104378131B (en) * | 2014-10-30 | 2016-08-24 | 西安空间无线电技术研究所 | A kind of Terahertz receiving front-end and its implementation |
| CN109031467A (en) * | 2018-07-24 | 2018-12-18 | 西安空间无线电技术研究所 | A kind of spaceborne Terahertz ice skies bottom detector system |
| CN109031467B (en) * | 2018-07-24 | 2020-12-18 | 西安空间无线电技术研究所 | Satellite-borne terahertz iced cloud sky bottom detector system |
| CN110518923A (en) * | 2019-09-16 | 2019-11-29 | 上海航天测控通信研究所 | Radiation receiver |
| CN110518923B (en) * | 2019-09-16 | 2021-06-08 | 上海航天测控通信研究所 | Radiation receiver |
| CN110726882A (en) * | 2019-10-15 | 2020-01-24 | 博微太赫兹信息科技有限公司 | Dual-polarization radiometer suitable for passive security check instrument |
| CN110726882B (en) * | 2019-10-15 | 2022-03-04 | 博微太赫兹信息科技有限公司 | Dual-polarization radiometer suitable for passive security check instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203595674U (en) | Satellite borne dual polarization 150 GHz receiver system | |
| CN206922720U (en) | Terahertz harmonic mixer based on Schottky diode | |
| CN103412317A (en) | Radio-frequency circuit structure for achieving function of converting GNSS satellite signals into baseband signals | |
| CN106226741B (en) | The method and system of intermediate frequency controllable signal is obtained using TR components | |
| CN104283625A (en) | Superheterodyne harmonic detector based on harmonic mixing | |
| CN110190864A (en) | A kind of distribution local oscillator Terahertz superhet array acceptor | |
| CN202940329U (en) | Single-aperture Beidou satellite navigation receiving device anti-interference antenna | |
| CN103560801A (en) | Satellite-bone low-noise 13-channel V wave band receiver | |
| CN104505599A (en) | Satellite navigation positioning antenna | |
| CN202503522U (en) | Super heterodyne harmonic detection device | |
| CN203554427U (en) | Multi-frequency receiver radio frequency front-end device | |
| CN203554424U (en) | Eight-element antenna array-based GNSS anti-interference receiver radio frequency front-end device | |
| CN102928887A (en) | Integrated signal receiving device of radio trench scenograph | |
| CN104092473A (en) | 3-mm waveband receiver and application thereof | |
| CN205539489U (en) | Anti -interference multichannel radio frequency module | |
| CN204694850U (en) | The radio-frequency transmitter of the Big Dipper No. two satellite navigation system channel structures | |
| CN102042959B (en) | Radio frequency readout device of terahertz detector and implementation method thereof | |
| CN204188306U (en) | Surface acoustic wave temperature measuring equipment | |
| CN110726738A (en) | Airborne microwave active and passive soil humidity detector | |
| CN203299376U (en) | Radio frequency front end apparatus of portable ground surveillance radar | |
| CN205752515U (en) | A kind of low section double frequency high accuracy multimode navigation antenna of improvement | |
| CN209823743U (en) | Distributed local oscillator terahertz superheterodyne array receiver | |
| CN104267412A (en) | Naval vessel Beidou satellite navigation anti-interference system | |
| CN103592641A (en) | Device for measuring transmitting power of millimeter wave cloud radar in real time | |
| CN202364206U (en) | Receiver circuit based on L wave band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160526 Address after: 201200 Shanghai city Pudong New Area jinzang Road No. 258 Building 5 7O7A Patentee after: Shanghai Aerospace Satellite Applied Co., Ltd. Address before: 200080 Shanghai city Hongkou District street Xingang Tianbao Road No. 881 Patentee before: Shanghai Aerospace Measurement Control Communication Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20181111 |