CN102419398B - Phase noise capability verification comparison apparatus applied to Ku and K wave band ranges - Google Patents
Phase noise capability verification comparison apparatus applied to Ku and K wave band ranges Download PDFInfo
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- CN102419398B CN102419398B CN 201110379552 CN201110379552A CN102419398B CN 102419398 B CN102419398 B CN 102419398B CN 201110379552 CN201110379552 CN 201110379552 CN 201110379552 A CN201110379552 A CN 201110379552A CN 102419398 B CN102419398 B CN 102419398B
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Abstract
The invention discloses a phase noise capability verification comparison apparatus applied to Ku and K wave band ranges. The apparatus comprises a high stability crystal oscillation source A (1), a high stability crystal oscillation source B (13) and a phase noise measuring device (12). Besides, the apparatus also includes a frequency multiplier A (2), a phase-locked loop A (3), a low noise voltage-controlled oscillator A (4), an isolation amplifier A (5), a frequency multiplier B (6), a comb spectrum generator A (7), a YIG tuned filter A (8), PIN switch combination A (9), power amplifier combination A (10) and a microwave source A (11). According to the invention, the comparison apparatus is applied to a phase noise measurement capability verification activity and the result is utilized, so that technical capability of a phase noise measuring test of a laboratory can be verified and evaluated objectively; therefore, the comparison apparatus has important realistic significances in quality guarantee of a phase noise measuring result, improvement of a confidence level, and sustaining capability for verifying and monitoring the laboratory.
Description
Technical field
The present invention relates to a kind of phase noise ability checking comparison device, particularly a kind of phase noise ability checking comparison device for Ku and K wavelength band.
Background technology
Phase noise measurement device in the market mainly comprises HP3047A, HP3048A, E5500 series and the PN9000 of introduction, and the composition of these devices mainly comprises: microwave source, high stability crystal oscillator source, phase noise measurement device.
For this large-scale, accurate, complicated measuring system, when same Transfer Standards was measured, there was larger discreteness in the phase noise measurement the possibility of result that different phase noise measurement system obtains.In the past by carrying out the matching measurement of phase noise parameter, solve the problem that the phase noise measurement system can't trace to the source.The frequency of comparison sample is 10MHz and 10GHz, and wherein the 10MHz crystal oscillator is used for the performance index of calibration phase noise measurement system low side frequency range, and 10GHz point microwave source frequently is for the performance index of calibrating " phase noise measurement system " high-end frequency range.
There are following several shortcomings in this comparison sample, and the phase-detecting incoming frequency scope of the phase noise measurement system that the first is present can cover 18GHz or 26.5GHz, can measure the source to be measured in Ku and K-band frequency scope.And the highest frequency of Transfer Standards in the past is the 10GHz microwave source, and it can only be used for calibrating the phase noise measurement system performance index of X-band 8GHz～12.5GHz, and its frequency coverage is obviously inadequate.Its two Transfer Standards in proficiency testing in the past is the comparison device that adopts comb spectrum to produce, but due to the comb filter employing is dielectric filter, its resonance frequency can only be done the arrowband adjustment, so just having caused the microwave source output of comparison device can only be single fixed frequency, and the advantage of comb spectrum generation device does not manifest.Its three coaxial negative interface of N-type that is output as of microwave source in the Transfer Standards of proficiency testing in the past, but the coaxial negative joint that is input as 2.92cm of the microwave phase-detecting of phase noise measurement system, so need the converter of microwave coaxial joint when measuring, make troubles to measurement.
Summary of the invention
The object of the invention is to provide a kind of phase noise ability checking comparison device for Ku and K wavelength band, solving in the past, device can't cover 18GHz or 26.5GHz incoming frequency scope, the advantage of comb spectrum generation device does not manifest, be the output of single-point microwave source in device, the coaxial negative interface of N-type that is output as of microwave source in the Transfer Standards of proficiency testing in the past, the problem of making troubles to measurement.
a kind of phase noise ability checking comparison device for Ku and K wavelength band, comprise: high stability crystal oscillator source A, high stability crystal oscillator source B, the phase noise measurement device, also comprise: frequency multiplier A, phase-locked loop A, low-noise voltage-controlled oscillator A, isolated amplifier A, frequency multiplier B, comb spectrum generator A, YIG tuned filter A, PIN switch combination A, power amplifier combination A, microwave source A, frequency multiplier C, phase-locked loop B, low-noise voltage-controlled oscillator B, isolated amplifier B, frequency multiplier D, comb spectrum generator B, YIG tuned filter B, PIN switch combination B, power amplifier combination B, microwave source B.
the voltage-controlled input end of high stability crystal oscillator source A is connected with the voltage-controlled output terminal radio-frequency cable of phase noise measurement device, the output terminal of high stability crystal oscillator source A is connected with the input end radio-frequency cable of frequency multiplier A, the output terminal of frequency multiplier A is connected with the local oscillator end-fire frequency cable of phase-locked loop A, the output terminal of low-noise voltage-controlled oscillator A is connected with the input end radio-frequency cable of isolated amplifier A, the phase-locked end of isolated amplifier A is connected with the radio-frequency head radio-frequency cable of phase-locked loop A, the voltage-controlled output terminal of phase-locked loop A is connected with the voltage-controlled input end radio-frequency cable of low-noise voltage-controlled oscillator A, the frequency multiplication end of isolated amplifier A is connected with the input end radio-frequency cable of frequency multiplier B, the output terminal of frequency multiplier B is connected with the input end radio-frequency cable of comb spectrum generator A, the output terminal of comb spectrum generator A is connected with the input end microwave cable of YIG tuned filter A, the output terminal of YIG tuned filter A is connected with the input end microwave cable of PIN switch combination A, the output terminal of PIN switch combination A is connected with the input end microwave cable of power amplifier combination A, the output terminal of power amplifier combination A is connected with the input end microwave cable of microwave source A, the output terminal of microwave source A is connected with the local oscillator end microwave cable of phase noise measurement device.
the output terminal of high stability crystal oscillator source B is connected with the input end radio-frequency cable of frequency multiplier C, the output terminal of frequency multiplier C is connected with the local oscillator end-fire frequency cable of phase-locked loop B, the output terminal of low-noise voltage-controlled oscillator B is connected with the input end radio-frequency cable of isolated amplifier B, the phase-locked end of isolated amplifier B is connected with the radio-frequency head radio-frequency cable of phase-locked loop B, the voltage-controlled output terminal of phase-locked loop B is connected with the voltage-controlled input end radio-frequency cable of low-noise voltage-controlled oscillator B, the frequency multiplication end of isolated amplifier B is connected with the input end radio-frequency cable of frequency multiplier D, low-noise voltage-controlled oscillator B output terminal is connected with isolated amplifier B input end radio-frequency cable, the output terminal of frequency multiplier D is connected with the input end radio-frequency cable of comb spectrum generator B, the output terminal of comb spectrum generator B is connected with the input end microwave cable of YIG tuned filter B, the output terminal of YIG tuned filter B is connected with the input end microwave cable of PIN switch combination B, the output terminal of PIN switch combination B is connected with the input end microwave cable of power amplifier combination B, the output terminal of power amplifier combination B is connected with the input end microwave cable of microwave source B, the output terminal of microwave source B is connected with the radio-frequency head microwave cable of phase noise measurement device.
During work, when calibrating the performance index of the phase noise measurement Ku of system and K-band frequency scope, be four somes microwave sources output frequently of 13GHz, 18GHz, 22GHz, 26GHz with the comparison device medium frequency.Frequency multiplier A arrives 100MHz with the 10MHz frequency output frequency multiplication of high stability crystal oscillator source A.Frequency is that the low-noise voltage-controlled oscillator A of 100MHz carries out Amplification and insulation by isolated amplifier A, is assigned as two-way output.Wherein the phase-locked end of isolated amplifier A is exported the frequency signal of the 100MHz that obtains with the process frequency multiplication, form loop in the situation that the voltage-controlled output terminal of phase-locked loop A is communicated with the voltage-controlled input end of low-noise voltage-controlled oscillator A, phase-locked loop A is locked in low-noise voltage-controlled oscillator A in the phase place output of high stability crystal oscillator source A.The frequency multiplication end output signal of isolated amplifier A arrives 1GHz by frequency multiplier B with the 100MHz frequency frequency multiplication of inputting, and then produces the comb spectrum sequence by comb spectrum generator A.Under the control of tuning voltage, YIG tuned filter A carries out the extraction of required pectination spectral line to the comb spectrum sequence, and the pectination spectral line of other frequency is suppressed, and required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz.YIG tuned filter A obtains required frequency spectrum by frequency-selecting, and PIN switch combination A is according to the Frequency Band Selection power amplifier A of frequency spectrum, and power amplifier A amplifies frequency spectrum.Control voltage and according to the frequency of pectination spectral line, PIN switch combination A and power amplifier A are selected, the pectination spectral line that is amplified is exported by microwave source A.
Frequency multiplier C arrives 100MHz with the 10MHz frequency output frequency multiplication of high stability crystal oscillator source B.Frequency is that the low-noise voltage-controlled oscillator B of 100MHz carries out Amplification and insulation by isolated amplifier B, is assigned as two-way output.Wherein the phase-locked end of isolated amplifier B is exported the frequency signal of the 100MHz that obtains with the process frequency multiplication, form loop in the situation that the voltage-controlled output terminal of phase-locked loop B is communicated with the voltage-controlled input end of low-noise voltage-controlled oscillator B, phase-locked loop B is locked in low-noise voltage-controlled oscillator B in the phase place output of high stability crystal oscillator source B.The frequency multiplication end output signal of isolated amplifier B arrives 1GHz by frequency multiplier D with the 100MHz frequency frequency multiplication of inputting, and then produces the comb spectrum sequence by comb spectrum generator B.Under the control of tuning voltage, YIG tuned filter B carries out the extraction of required pectination spectral line to the comb spectrum sequence, and the pectination spectral line of other frequency is suppressed, and required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz.The frequency spectrum of YIG tuned filter B output carries out suitable power amplification by the power amplifier B that PIN switch combination B controls.Control voltage and according to the frequency of pectination spectral line, PIN switch combination B and power amplifier B are selected, the pectination spectral line that is amplified is exported by microwave source B.
The invention has the advantages that: the demand that, can cover the checking of Ku and K wave band phase noise measurement system capability.Two, on the basis of comb spectrum production method, adopt the YIG tuned filter can choose flexibly the pectination spectral line, making Transfer Standards is the microwave source in a broadband.Three, comparison device is output as the negative coaxial fitting of 2.92cm, has facilitated measuring process.By use this comparison device in the ability verification of phase noise measurement, and utilize its result, can verify objectively the technical capability with the phase noise metrology and measurement of evaluation experimental chamber, this is to guaranteeing the quality of phase noise measurement result, improve its degree of confidence, the continuous capability of checking and monitoring experiment chamber has important practical significance.
Description of drawings
A kind of schematic diagram of verifying comparison device for the phase noise ability of Ku and K wavelength band of Fig. 1.
1. high stability crystal oscillator source A2. frequency multiplier A3. phase-locked loop A4. low-noise voltage-controlled oscillator A5. isolated amplifier A
6. frequency multiplier B7. comb spectrum generator A8.YIG tuned filter A9.PIN switch combination A10. power amplifier makes up A
11. microwave source A12. phase noise measurement device 13. high stability crystal oscillator source B14. frequency multiplier C15. phase-locked loop B
16. low-noise voltage-controlled oscillator B17. isolated amplifier B18. frequency multiplier D19. comb spectrum generator B
20.YIG tuned filter B21.PIN switch combination B22. power amplifier combination B23. microwave source B
Embodiment
a kind of phase noise ability checking comparison device for Ku and K wavelength band, comprise: high stability crystal oscillator source A1, high stability crystal oscillator source B13, phase noise measurement device 12, also comprise: frequency multiplier A2, phase-locked loop A3, low-noise voltage-controlled oscillator A4, isolated amplifier A5, frequency multiplier B6, comb spectrum generator A7, YIG tuned filter A8, PIN switch combination A9, power amplifier combination A10, microwave source A11, frequency multiplier C14, phase-locked loop B15, low-noise voltage-controlled oscillator B16, isolated amplifier B17, frequency multiplier D18, comb spectrum generator B19, YIG tuned filter B20, PIN switch combination B21, power amplifier combination B22, microwave source B23.
the voltage-controlled input end of high stability crystal oscillator source A1 is connected with the voltage-controlled output terminal radio-frequency cable of phase noise measurement device 12, the output terminal of high stability crystal oscillator source A1 is connected with the input end radio-frequency cable of frequency multiplier A2, the output terminal of frequency multiplier A2 is connected with the local oscillator end-fire frequency cable of phase-locked loop A3, the output terminal of low-noise voltage-controlled oscillator A4 is connected with the input end radio-frequency cable of isolated amplifier A5, the phase-locked end of isolated amplifier A5 is connected with the radio-frequency head radio-frequency cable of phase-locked loop A3, the voltage-controlled output terminal of phase-locked loop A3 is connected with the voltage-controlled input end radio-frequency cable of low-noise voltage-controlled oscillator A4, the frequency multiplication end of isolated amplifier A5 is connected with the input end radio-frequency cable of frequency multiplier B6, the output terminal of frequency multiplier B6 is connected with the input end radio-frequency cable of comb spectrum generator A7, the output terminal of comb spectrum generator A7 is connected with the input end microwave cable of YIG tuned filter A8, the output terminal of YIG tuned filter A8 is connected with the input end microwave cable of PIN switch combination A9, the output terminal of PIN switch combination A9 is connected with the input end microwave cable of power amplifier combination A10, the output terminal of power amplifier combination A10 is connected with the input end microwave cable of microwave source A11, the output terminal of microwave source A11 is connected with the local oscillator end microwave cable of phase noise measurement device 12.
the output terminal of high stability crystal oscillator source B13 is connected with the input end radio-frequency cable of frequency multiplier C14, the output terminal of frequency multiplier C14 is connected with the local oscillator end-fire frequency cable of phase-locked loop B15, the output terminal of low-noise voltage-controlled oscillator B16 is connected with the input end radio-frequency cable of isolated amplifier B17, the phase-locked end of isolated amplifier B17 is connected with the radio-frequency head radio-frequency cable of phase-locked loop B15, the voltage-controlled output terminal of phase-locked loop B15 is connected with the voltage-controlled input end radio-frequency cable of low-noise voltage-controlled oscillator B16, the frequency multiplication end of isolated amplifier B17 is connected with the input end radio-frequency cable of frequency multiplier D18, low-noise voltage-controlled oscillator B16 output terminal is connected with isolated amplifier B17 input end radio-frequency cable, the output terminal of frequency multiplier D18 is connected with the input end radio-frequency cable of comb spectrum generator B19, the output terminal of comb spectrum generator B19 is connected with the input end microwave cable of YIG tuned filter B20, the output terminal of YIG tuned filter B20 is connected with the input end microwave cable of PIN switch combination B21, the output terminal of PIN switch combination B21 is connected with the input end microwave cable of power amplifier combination B22, the output terminal of power amplifier combination B22 is connected with the input end microwave cable of microwave source B23, the output terminal of microwave source B23 is connected with the radio-frequency head microwave cable of phase noise measurement device 12.
During work, when calibrating the performance index of the phase noise measurement Ku of system and K-band frequency scope, be four somes microwave sources output frequently of 13GHz, 18GHz, 22GHz, 26GHz with the comparison device medium frequency.Frequency multiplier A2 arrives 100MHz with the 10MHz frequency output frequency multiplication of high stability crystal oscillator source A1.Frequency is that the low-noise voltage-controlled oscillator A4 of 100MHz carries out Amplification and insulation by isolated amplifier A5, is assigned as two-way output.Wherein the phase-locked end of isolated amplifier A5 is exported the frequency signal of the 100MHz that obtains with the process frequency multiplication, form loop in the situation that the voltage-controlled output terminal of phase-locked loop A3 is communicated with the voltage-controlled input end of low-noise voltage-controlled oscillator A4, phase-locked loop A3 is locked in low-noise voltage-controlled oscillator A4 in the phase place output of high stability crystal oscillator source A1.The frequency multiplication end output signal of isolated amplifier A5 arrives 1GHz by frequency multiplier B6 with the 100MHz frequency frequency multiplication of inputting, and then produces the comb spectrum sequence by comb spectrum generator A7.Under the control of tuning voltage, YIG tuned filter A8 carries out the extraction of required pectination spectral line to the comb spectrum sequence, and the pectination spectral line of other frequency is suppressed, and required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz.YIG tuned filter A8 obtains required frequency spectrum by frequency-selecting, and PIN switch combination A9 is according to the Frequency Band Selection power amplifier A of frequency spectrum, and power amplifier A amplifies frequency spectrum.Control voltage and according to the frequency of pectination spectral line, PIN switch combination A9 and power amplifier A are selected, the pectination spectral line that is amplified is exported by microwave source A11.
Frequency multiplier C14 arrives 100MHz with the 10MHz frequency output frequency multiplication of high stability crystal oscillator source B13.Frequency is that the low-noise voltage-controlled oscillator B16 of 100MHz carries out Amplification and insulation by isolated amplifier B17, is assigned as two-way output.Wherein the phase-locked end of isolated amplifier B17 is exported the frequency signal of the 100MHz that obtains with the process frequency multiplication, form loop in the situation that the voltage-controlled output terminal of phase-locked loop B15 is communicated with the voltage-controlled input end of low-noise voltage-controlled oscillator B16, phase-locked loop B15 is locked in low-noise voltage-controlled oscillator B16 in the phase place output of high stability crystal oscillator source B13.The frequency multiplication end output signal of isolated amplifier B17 arrives 1GHz by frequency multiplier D18 with the 100MHz frequency frequency multiplication of inputting, and then produces the comb spectrum sequence by comb spectrum generator B19.Under the control of tuning voltage, YIG tuned filter B20 carries out the extraction of required pectination spectral line to the comb spectrum sequence, and the pectination spectral line of other frequency is suppressed, and required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz.The frequency spectrum of YIG tuned filter B20 output carries out suitable power amplification by the power amplifier B that PIN switch combination B21 controls.Control voltage and according to the frequency of pectination spectral line, PIN switch combination B21 and power amplifier B are selected, the pectination spectral line that is amplified is exported by microwave source B23.
Claims (1)
1. a phase noise ability that is used for Ku and K wavelength band is verified comparison device, comprise: high stability crystal oscillator source A(1), high stability crystal oscillator source B(13), phase noise measurement device (12), characterized by further comprising: frequency multiplier A(2), phase-locked loop A(3), low-noise voltage-controlled oscillator A(4), isolated amplifier A(5), frequency multiplier B(6), comb spectrum generator A(7), YIG tuned filter A(8), PIN switch combination A(9), power amplifier combination A(10), microwave source A(11), frequency multiplier C(14), phase-locked loop B(15), low-noise voltage-controlled oscillator B(16), isolated amplifier B(17), frequency multiplier D(18), comb spectrum generator B(19), YIG tuned filter B(20), PIN switch combination B(21), power amplifier combination B(22), microwave source B(23),
high stability crystal oscillator source A(1) voltage-controlled input end is connected with the voltage-controlled output terminal radio-frequency cable of phase noise measurement device (12), high stability crystal oscillator source A(1) output terminal and frequency multiplier A(2) the input end radio-frequency cable be connected, frequency multiplier A(2) output terminal and phase-locked loop A(3) the local oscillator end-fire frequently cable be connected, low-noise voltage-controlled oscillator A(4) output terminal and isolated amplifier A(5) the input end radio-frequency cable be connected, isolated amplifier A(5) phase-locked end and phase-locked loop A(3) the radio-frequency head radio-frequency cable be connected, phase-locked loop A(3) voltage-controlled output terminal and low-noise voltage-controlled oscillator A(4) voltage-controlled input end radio-frequency cable be connected, isolated amplifier A(5) frequency multiplication end and frequency multiplier B(6) the input end radio-frequency cable be connected, frequency multiplier B(6) output terminal and comb spectrum generator A(7) the input end radio-frequency cable be connected, comb spectrum generator A(7) output terminal and YIG tuned filter A(8) the input end microwave cable be connected, YIG tuned filter A(8) output terminal and PIN switch combination A(9) the input end microwave cable be connected, PIN switch combination A(9) input end microwave cable output terminal and power amplifier combination A(10) is connected, power amplifier combination A(10) output terminal and microwave source A(11) the input end microwave cable be connected, microwave source A(11) output terminal is connected with the local oscillator end microwave cable of phase noise measurement device (12),
high stability crystal oscillator source B(13) output terminal and frequency multiplier C(14) the input end radio-frequency cable be connected, frequency multiplier C(14) output terminal and phase-locked loop B(15) the local oscillator end-fire frequently cable be connected, low-noise voltage-controlled oscillator B(16) output terminal and isolated amplifier B(17) the input end radio-frequency cable be connected, isolated amplifier B(17) phase-locked end and phase-locked loop B(15) the radio-frequency head radio-frequency cable be connected, phase-locked loop B(15) voltage-controlled output terminal and low-noise voltage-controlled oscillator B(16) voltage-controlled input end radio-frequency cable be connected, isolated amplifier B(17) frequency multiplication end and frequency multiplier D(18) the input end radio-frequency cable be connected, low-noise voltage-controlled oscillator B(16) output terminal and isolated amplifier B(17) the input end radio-frequency cable is connected, frequency multiplier D(18) output terminal and comb spectrum generator B(19) the input end radio-frequency cable be connected, comb spectrum generator B(19) output terminal and YIG tuned filter B(20) the input end microwave cable be connected, YIG tuned filter B(20) output terminal and PIN switch combination B(21) the input end microwave cable be connected, PIN switch combination B(21) input end microwave cable output terminal and power amplifier combination B(22) is connected, power amplifier combination B(22) output terminal and microwave source B(23) the input end microwave cable be connected, microwave source B(23) output terminal is connected with the radio-frequency head microwave cable of phase noise measurement device (12),
During work, when calibrating the performance index of the phase noise measurement Ku of system and K-band frequency scope, be four somes microwave sources output frequently of 13GHz, 18GHz, 22GHz, 26GHz with the comparison device medium frequency; Frequency multiplier A(2) with high stability crystal oscillator source A(1) 10MHz frequency output frequency multiplication to 100MHz; Frequency is the low-noise voltage-controlled oscillator A(4 of 100MHz) by isolated amplifier A(5) carry out Amplification and insulation, be assigned as two-way output; Isolated amplifier A(5 wherein) frequency signal of phase-locked end output and the 100MHz that obtains through frequency multiplication, in the situation that phase-locked loop A(3) voltage-controlled output terminal and low-noise voltage-controlled oscillator A(4) voltage-controlled input end be communicated with form loop, phase-locked loop A(3) with low-noise voltage-controlled oscillator A(4) be locked in high stability crystal oscillator source A(1) phase place output on; Isolated amplifier A(5) frequency multiplication end output signal is by frequency multiplier B(6) the 100MHz frequency frequency multiplication of inputting is arrived 1GHz, then by comb spectrum generator A(7) generation comb spectrum sequence; Under the control of tuning voltage, YIG tuned filter A(8) the comb spectrum sequence is carried out the extraction of required pectination spectral line, and the pectination spectral line of other frequency is suppressed, required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz; YIG tuned filter A(8) obtain required frequency spectrum by frequency-selecting, PIN switch combination A(9) according to the Frequency Band Selection power amplifier A of frequency spectrum, power amplifier A amplifies frequency spectrum; Control voltage according to the frequency of pectination spectral line to PIN switch combination A(9) and power amplifier A select, the pectination spectral line that is amplified is by microwave source A(11) export;
Frequency multiplier C(14) with high stability crystal oscillator source B(13) 10MHz frequency output frequency multiplication to 100MHz; Frequency is the low-noise voltage-controlled oscillator B(16 of 100MHz) by isolated amplifier B(17) carry out Amplification and insulation, be assigned as two-way output; Isolated amplifier B(17 wherein) frequency signal of phase-locked end output and the 100MHz that obtains through frequency multiplication, in the situation that phase-locked loop B(15) voltage-controlled output terminal and low-noise voltage-controlled oscillator B(16) voltage-controlled input end be communicated with form loop, phase-locked loop B(15) with low-noise voltage-controlled oscillator B(16) be locked in high stability crystal oscillator source B(13) phase place output on; Isolated amplifier B(17) frequency multiplication end output signal is by frequency multiplier D(18) the 100MHz frequency frequency multiplication of inputting is arrived 1GHz, then by comb spectrum generator B(19) generation comb spectrum sequence; Under the control of tuning voltage, YIG tuned filter B(20) the comb spectrum sequence is carried out the extraction of required pectination spectral line, and the pectination spectral line of other frequency is suppressed, required pectination spectral line frequency is 13GHz, 18GHz, 22GHz, 26GHz; YIG tuned filter B(20) output frequency spectrum by PIN switch combination B(21) control power amplifier B carry out suitable power amplification; Control voltage according to the frequency of pectination spectral line to PIN switch combination B(21) and power amplifier B select, the pectination spectral line that is amplified is by microwave source B(23) export.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6621277B2 (en) * | 2001-10-30 | 2003-09-16 | Agilent Technologies, Inc. | Phase noise measurement module and method for a spectrum analyzer |
| CN1866037A (en) * | 2006-06-13 | 2006-11-22 | 山西大学 | Laser phase noise measurer |
| CN101789558A (en) * | 2010-01-27 | 2010-07-28 | 中国科学院半导体研究所 | Electric tuning low-phase noise photo-generated microwave source |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6621277B2 (en) * | 2001-10-30 | 2003-09-16 | Agilent Technologies, Inc. | Phase noise measurement module and method for a spectrum analyzer |
| CN1866037A (en) * | 2006-06-13 | 2006-11-22 | 山西大学 | Laser phase noise measurer |
| CN101789558A (en) * | 2010-01-27 | 2010-07-28 | 中国科学院半导体研究所 | Electric tuning low-phase noise photo-generated microwave source |
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