CN102983874A - S-frequency range broadband extremely-low intermodulation frequency converter - Google Patents
S-frequency range broadband extremely-low intermodulation frequency converter Download PDFInfo
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- CN102983874A CN102983874A CN2012105681611A CN201210568161A CN102983874A CN 102983874 A CN102983874 A CN 102983874A CN 2012105681611 A CN2012105681611 A CN 2012105681611A CN 201210568161 A CN201210568161 A CN 201210568161A CN 102983874 A CN102983874 A CN 102983874A
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Abstract
The invention discloses an S-frequency range broadband extremely-low intermodulation frequency converter for a measurement and control system, which comprises an S-frequency range isolator (1), an S-frequency range filter (2), an S-frequency range frequency mixer (3), a local vibration isolator (4), an intermediate frequency low-pass filter (5), an intermediate frequency band-pass filter (6), an intermediate frequency amplifier (7), a second frequency mixer (8), a second local vibration isolator (9), a second intermediate frequency low-pass filter (10), a second intermediate frequency band-pass filter (11), a programmable attenuator (12) and a second intermediate frequency amplifier (13). The intermodulation frequency converter can be applied to a signal reception link of the deep space measurement and control system with an extremely low signal-to-noise ratio, and has the characteristics of stable gain phase position and low intermodulation signal.
Description
Technical field
The present invention relates to the extremely low intermodulation frequency converter equipment of system S frequency range of Aerospace Tracking ﹠ Control, be specially adapted to the utmost point Low SNR signal receiving equipment in the deep space TT﹠C system.
Background technology
In the deep space TT﹠C system, because target and survey station are at a distance of remote, from several ten million to more than one hundred million kilometers, therefore cause the reception signal very faint, in order effectively from the small-signal that receives, to extract useful information, the frequency converter equipment that needs the extremely low intermodulation of development, with the harmful intermodulation component in effective control receiver, the raising system receives the ability of small-signal.
Summary of the invention
Technical problem to be solved by this invention is to improve traditional Design of Inverter scheme, and the intermodulation component in the receiver is suppressed under the system noise, satisfies small-signal in the deep space system and receives requirement to frequency conversion equipment.
The object of the present invention is achieved like this:
The extremely low intermodulation frequency-converter device of a kind of S frequency range of TT﹠C system is characterized in that: comprise S frequency range isolator 1, S frequency band filter 2, S frequency range frequency mixer 3, a local oscillator isolator 4, an intermediate frequency low pass filter 5, an if bandpas filter 6, an intermediate frequency amplifier 7, the second frequency mixer 8, two local oscillator isolators 9, two intermediate frequency low pass filters 10, two if bandpas filters 11, programmable attenuator 12 and two intermediate frequency amplifiers 13; Described S frequency range isolator 1 carries out the radiofrequency signal of outside input to export S frequency band filter 2 to after the microwave isolation processing, and the spuious and interference signal in the S frequency band filter 2 filtering input signals is sent into the radio frequency inbound port of S frequency range frequency mixer 3; One local oscillator enter carry out impedance matching through a local oscillator isolator 4 after, send into the local oscillator input port of S frequency range frequency mixer 3; 3 pairs of suppressing out-of-band interferences of S frequency range frequency mixer, the difference frequency frequency of output radio frequency and local oscillator is delivered to an intermediate frequency low pass filter 5; Parasitic passband noise jamming in the spectrum of radio frequency signals of 5 pairs of S frequency ranges of one intermediate frequency low pass filter frequency mixer, 3 inputs suppresses, and output signal is delivered to an if bandpas filter 6; Spuious decay of near-end in 6 pairs of intermediate frequency low pass filters of one if bandpas filter, 5 output signal spectrums, the intermediate-freuqncy signal after suppressing to disturb send an intermediate frequency amplifier 7 to amplify, and after the amplification signal is exported to the radio frequency inbound port of the second frequency mixer 8; Two local oscillators enter carry out impedance matching through two local oscillator isolators 9 after, send the local oscillator inbound port of the second frequency mixer 8,8 pairs of suppressing out-of-band interferences of the second frequency mixer, the difference frequency signal of exporting an intermediate frequency and the second local oscillator send two intermediate frequency low pass filters 10; The parasitic passband clutter of the far-end in 10 pairs of the second frequency mixers of two intermediate frequency low pass filters, 8 output signal spectrums suppresses, output signal is delivered to two if bandpas filters 11, the near-end of filtering two intermediate-freuqncy signals is spuious, after two pure intermediate-freuqncy signals are sent programmable attenuator 12 to decay to deliver to 13 pairs of signals of two intermediate frequency amplifiers and amplify after the control, export.
The present invention compares with background technology has following advantage:
1. the extremely low intermodulation frequency-converter device of S frequency range of the present invention adopts the double conversion system, is easy to control the spuious component after the frequency conversion, and can realizes gain stabilization.
2. the extremely low intermodulation frequency-converter device radio frequency of S frequency range of the present invention is connected isolator with the local oscillator input port, realizes good impedance matching.
3. the signal of the extremely low intermodulation frequency-converter device of S frequency range of the present invention after to mixing adopted the scheme of low pass filter and band pass filter cascade, establishment far-end parasitic spuious.
4. the extremely low intermodulation frequency-converter device of S frequency range of the present invention has disposed programmable attenuator, is highly suitable for the large application scenario of incoming signal level fluctuation.
Description of drawings
Fig. 1 is functional-block diagram of the present invention.
Embodiment
With reference to Fig. 1, S frequency range isolator 1, S frequency band filter 2, S frequency range frequency mixer 3, a local oscillator isolator 4, an intermediate frequency low pass filter 5, an if bandpas filter 6, an intermediate frequency amplifier 7, the second frequency mixer 8, two local oscillator isolators 9, two intermediate frequency low pass filters 10, two if bandpas filters 11, programmable attenuator 12 and two intermediate frequency amplifiers 13.
Among the present invention, S frequency range isolator 1 carries out the radiofrequency signal of outside input to export S frequency band filter 2 to after the microwave isolation processing, and the spuious and interference signal in the S frequency band filter 2 filtering input signals is sent into the radio frequency inbound port of S frequency range frequency mixer 3; One local oscillator enter carry out impedance matching through a local oscillator isolator 4 after, send into the local oscillator input port of S frequency range frequency mixer 3; 3 pairs of suppressing out-of-band interferences of S frequency range frequency mixer, the difference frequency frequency of output radio frequency and local oscillator is delivered to an intermediate frequency low pass filter 5; Parasitic passband noise jamming in the spectrum of radio frequency signals of 5 pairs of S frequency ranges of one intermediate frequency low pass filter frequency mixer, 3 inputs suppresses, and output signal is delivered to an if bandpas filter 6; Spuious decay of near-end in 6 pairs of intermediate frequency low pass filters of one if bandpas filter, 5 output signal spectrums, the intermediate-freuqncy signal after suppressing to disturb send an intermediate frequency amplifier 7 to amplify, and after the amplification signal is exported to the radio frequency inbound port of the second frequency mixer 8; Two local oscillators enter carry out impedance matching through two local oscillator isolators 9 after, send the local oscillator inbound port of the second frequency mixer 8,8 pairs of suppressing out-of-band interferences of the second frequency mixer, the difference frequency signal of exporting an intermediate frequency and the second local oscillator send two intermediate frequency low pass filters 10; The parasitic passband clutter of the far-end in 10 pairs of the second frequency mixers of two intermediate frequency low pass filters, 8 output signal spectrums suppresses, output signal is delivered to two if bandpas filters 11, the near-end of filtering two intermediate-freuqncy signals is spuious, after two pure intermediate-freuqncy signals are sent programmable attenuator 12 to decay to deliver to 13 pairs of signals of two intermediate frequency amplifiers and amplify after the control, export.
The concise and to the point operation principle of the present invention is as follows:
The input of S frequency range radio frequency is processed through double conversion in the extremely low intermodulation frequency converter in S frequency range broadband, by the interference components in the low pass filter filters out parasitic passband of cascade behind the frequency converter, band pass filter by cascade suppresses near-end is spuious again, and the complete machine intermodulation is controlled in the scope of allowing the most at last.
At radio frequency input and local oscillator input port configuration isolation device, improve the port match characteristic, improve the gain of equipment and the stability of phase place.
Mounting structure of the present invention is as follows: the extremely low intermodulation frequency converter of the S frequency range among Fig. 1 is installed in the 3U cabinet of a standard, is placed on the system cabinet, form the present invention.
Claims (1)
1. the extremely low intermodulation frequency-converter device of the S frequency range of a TT﹠C system is characterized in that: comprise S frequency range isolator (1), S frequency band filter (2), S frequency range frequency mixer (3), one local oscillator isolator (4), one intermediate frequency low pass filter (5), one if bandpas filter (6), one intermediate frequency amplifier (7), the second frequency mixer (8), two local oscillator isolators (9), two intermediate frequency low pass filters (10), two if bandpas filters (11), programmable attenuator (12) and two intermediate frequency amplifiers (13); Described S frequency range isolator (1) carries out the radiofrequency signal of outside input to export S frequency band filter (2) to after the microwave isolation processing, spuious and interference signal in S frequency band filter (2) the filtering input signal is sent into the radio frequency inbound port of S frequency range frequency mixer (3); One local oscillator enter carry out impedance matching through a local oscillator isolator (4) after, send into the local oscillator input port of S frequency range frequency mixer (3); S frequency range frequency mixer (3) is to suppressing out-of-band interference, and the difference frequency frequency of output radio frequency and local oscillator is delivered to an intermediate frequency low pass filter (5); One intermediate frequency low pass filter (5) suppresses the parasitic passband noise jamming in the spectrum of radio frequency signals of S frequency range frequency mixer (3) input, and output signal is delivered to an if bandpas filter (6); One if bandpas filter (6) is to spuious decay of near-end in intermediate frequency low pass filter (5) output signal spectrum, intermediate-freuqncy signal after suppressing to disturb send an intermediate frequency amplifier (7) to amplify, and after the amplification signal is exported to the radio frequency inbound port of the second frequency mixer (8); Two local oscillators enter carry out impedance matching through two local oscillator isolators (9) after, send the local oscillator inbound port of the second frequency mixer (8), the second frequency mixer (8) is to suppressing out-of-band interference, and the difference frequency signal of exporting an intermediate frequency and the second local oscillator send two intermediate frequency low pass filters (10); Two intermediate frequency low pass filters (10) suppress the parasitic passband clutter of the far-end in the second frequency mixer (8) output signal spectrum, output signal is delivered to two if bandpas filters (11), the near-end of filtering two intermediate-freuqncy signals is spuious, after two pure intermediate-freuqncy signals are sent programmable attenuator (12) to decay to deliver to two intermediate frequency amplifiers (13) signal is amplified after the control, export.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105681611A CN102983874A (en) | 2012-12-24 | 2012-12-24 | S-frequency range broadband extremely-low intermodulation frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012105681611A CN102983874A (en) | 2012-12-24 | 2012-12-24 | S-frequency range broadband extremely-low intermodulation frequency converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130578A (en) * | 2016-06-21 | 2016-11-16 | 成都金本华电子有限公司 | S Band Airborne launches channel |
| CN110806510A (en) * | 2019-11-04 | 2020-02-18 | 中国科学院合肥物质科学研究院 | System for measuring wave number in direction of 4.6GHz low-clutter parallel magnetic field |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054734Y (en) * | 2007-06-28 | 2008-04-30 | 重庆会凌电子新技术有限公司 | A broad frequency monitoring receiver |
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2012
- 2012-12-24 CN CN2012105681611A patent/CN102983874A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201054734Y (en) * | 2007-06-28 | 2008-04-30 | 重庆会凌电子新技术有限公司 | A broad frequency monitoring receiver |
Non-Patent Citations (2)
| Title |
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| 周凤艳: "现代DBF雷达多通道接收机的实验研究", 《雷达科学与技术》 * |
| 李贵芳: "S频段微波下变频器的设计与实现", 《中国优秀硕士论文全文数据库》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106130578A (en) * | 2016-06-21 | 2016-11-16 | 成都金本华电子有限公司 | S Band Airborne launches channel |
| CN110806510A (en) * | 2019-11-04 | 2020-02-18 | 中国科学院合肥物质科学研究院 | System for measuring wave number in direction of 4.6GHz low-clutter parallel magnetic field |
| CN110806510B (en) * | 2019-11-04 | 2022-01-11 | 中国科学院合肥物质科学研究院 | System for measuring wave number in direction of 4.6GHz low-clutter parallel magnetic field |
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Application publication date: 20130320 |