CN205017281U - Ultrashort wave pectination spectrum signal produces circuit - Google Patents
Ultrashort wave pectination spectrum signal produces circuit Download PDFInfo
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- CN205017281U CN205017281U CN201520646465.4U CN201520646465U CN205017281U CN 205017281 U CN205017281 U CN 205017281U CN 201520646465 U CN201520646465 U CN 201520646465U CN 205017281 U CN205017281 U CN 205017281U
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Abstract
The utility model provides an ultrashort wave pectination spectrum signal produces circuit, advance single -frequency point signal generation unit, mixing unit, filtering amplification unit and power control unit, wherein reference signal warp including low frequency pectination register for easy reference signal generation unit, small step low frequency pectination register for easy reference signal generation unit obtains low frequency pectination spectrum signal F1, the 2nd reference signal warp the small step is advanced single -frequency point signal generation unit and is obtained single -frequency dot signal F2, regards F1 as radiofrequency signal, and F2 arrives as local oscillator signal input the mixing unit produces pectination spectrum signal F3, this pectination spectrum signal F3 warp behind the corresponding harmonic component of filtering amplification unit filtering, input power control unit adjustment power to obtain the controllable ultrashort wave pectination spectrum signal F of power. The utility model discloses in the frequency range of broad, promise to set to music line spaced prerequisite under, realized the function that little step -by -step, low stray, low phase noise and quick frequency switch over.
Description
Technical field
The utility model relates to signal generator, is specifically related to a kind of ultrashort wave comb spectrum signal generating circuit.
Background technology
At present, in multichannel direction finding receiving system, in order to ensure direction finding precision, need to correct the gain of each passage and phase place.Normally used correction signal is single frequency point signal, for ultrashort wave broadband receiver, complete full frequency band (being generally more than 30MHz to 3600MHz) full bandwidth (can reach 40MHz) scanning, often need the long period.And use comb spectrum signal as correction signal, can realize single pass in a bandwidth completes, and greatly can improve the correction rate of system.
Utility model content
The application by providing a kind of ultrashort wave comb spectrum signal generating circuit, to realize the ultrashort wave comb spectrum signal of little stepping, low spurious, low phase noise and fast frequency handoff functionality.
The application is achieved by the following technical solutions:
A kind of ultrashort wave comb spectrum signal generating circuit, comprises low frequency comb spectrum signal generation unit, little stepping single frequency point signal generation unit, mixing unit, filter and amplification unit and power control unit, wherein:
Described low frequency comb spectrum signal generation unit is connected in sequence by snap-off diode, the first low-pass filter circuit, saturation amplification circuit, the second low-pass filter circuit, described snap-off diode carries out frequency multiplication to the first reference signal, signal after frequency multiplication is through the unnecessary spectral line of described first low-pass filter circuit filtering, and then carry out power amplification by described saturation amplification circuit, finally carry out filtering by the second low-pass filter circuit again and obtain low frequency comb spectrum signal F1;
Described little stepping single frequency point signal generation unit is connected in sequence by integrated phase lock loop circuit, the first power amplification circuit, the 3rd low-pass filter circuit, described integrated phase lock loop circuit carries out process to the second reference signal and obtains little stepping simple signal, this little stepping simple signal, after described first power amplification circuit carries out power amplification, carries out filtering by described 3rd low-pass filter circuit and obtains single frequency point signal F2;
Described low frequency comb spectrum signal F1 and described single frequency point signal F2 sends into described mixing unit and carries out Frequency mixing processing and obtain comb spectrum signal F3, this comb spectrum signal F3 is after the corresponding harmonic components of described filter and amplification unit filtering, be input to described power control unit and realize power adjustment, final output obtains the controlled ultrashort wave comb spectrum signal F of power.
Further, described snap-off diode adopts BT5B to carry out frequency multiplication to the first reference signal, obtains the low frequency comb spectrum signal being spaced apart 0.5MHz.
Further, described integrated phase lock loop circuit adopts ADF4350BCPZ, and the second reference signal produces 30MHz-3600MHz after described integrated phase lock loop circuit, and stepping is the little stepping simple signal of 100KHz.
Further, described mixing unit adopts frequency mixer HMC213AMS8, described low frequency comb spectrum signal F1 is input to the RF pin of frequency mixer HMC213AMS8 as radio frequency, described single frequency point signal F2 is input to the LO pin of frequency mixer HMC213AMS8 as local oscillation signal, and the IF pin of this frequency mixer HMC213AMS8 exports the comb spectrum signal F3 of 30MHz-3600MHz.
Further, described power control unit adopts program control decay chip PE4302, for realizing the adjustable attenuation of 0-31dB, and the ultrashort wave comb spectrum signal F of the 30MHz-3600MHz that the output power output of this power control unit is controlled.
Compared with prior art, the technical scheme that the application provides, the technique effect had or advantage are: in wider frequency range, under ensureing the prerequisite at certain spectral line interval, achieve the function that little stepping, low spurious, low phase noise and fast frequency switch, the utility model design is reasonable, and debugging is simple, is easy to realize through engineering approaches and produces.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of snap-off diode and the first low-pass filter circuit;
Fig. 3 is the circuit theory diagrams of saturation amplification circuit and the second low-pass filter circuit;
Fig. 4 is integrated phase lock chip pin figure;
Fig. 5 is the circuit theory diagrams of the first power amplification circuit;
Fig. 6 is the circuit theory diagrams of mixing unit;
Fig. 7 is the circuit theory diagrams of power control unit;
Fig. 8 is comb spectrum signal spectra line chart;
Fig. 9 is comb spectrum signal spectrum interval and spectral line flatness resolution chart;
Figure 10 is comb spectrum signal noise resolution chart.
Embodiment
The embodiment of the present application by providing a kind of ultrashort wave comb spectrum signal generating circuit, to realize the ultrashort wave comb spectrum signal of little stepping, low spurious, low phase noise and fast frequency handoff functionality.
In order to better understand technique scheme, below in conjunction with Figure of description and concrete execution mode, technique scheme is described in detail.
Embodiment
A kind of ultrashort wave comb spectrum signal generating circuit, as shown in Figure 1, comprises low frequency comb spectrum signal generation unit, little stepping single frequency point signal generation unit, mixing unit, filter and amplification unit and power control unit, wherein:
Described low frequency comb spectrum signal generation unit is connected in sequence by snap-off diode, the first low-pass filter circuit, saturation amplification circuit, the second low-pass filter circuit, described snap-off diode carries out frequency multiplication to the first reference signal, signal after frequency multiplication is through the unnecessary spectral line of described first low-pass filter circuit filtering, and then carry out power amplification by described saturation amplification circuit, finally carry out filtering by the second low-pass filter circuit again and obtain low frequency comb spectrum signal F1;
Described little stepping single frequency point signal generation unit is connected in sequence by integrated phase lock loop circuit, the first power amplification circuit, the 3rd low-pass filter circuit, described integrated phase lock loop circuit carries out process to the second reference signal and obtains little stepping simple signal, this little stepping simple signal, after described first power amplification circuit carries out power amplification, carries out filtering by described 3rd low-pass filter circuit and obtains single frequency point signal F2;
Described low frequency comb spectrum signal F1 and described single frequency point signal F2 sends into described mixing unit and carries out Frequency mixing processing and obtain comb spectrum signal F3, this comb spectrum signal F3 is after the corresponding harmonic components of described filter and amplification unit filtering, be input to described power control unit and realize power adjustment, final output obtains the controlled ultrashort wave comb spectrum signal F of power.
Further, described snap-off diode adopts BT5B to carry out frequency multiplication to the first reference signal, obtains the low frequency comb spectrum signal being spaced apart 0.5MHz.Be illustrated in figure 2 the circuit diagram of snap-off diode and the first low-pass filter circuit.Be illustrated in figure 3 the circuit diagram of saturation amplification circuit and the second low-pass filter circuit.
Further, described integrated phase lock loop circuit adopts ADF4350BCPZ, second reference signal produces 30MHz-3600MHz after described integrated phase lock loop circuit, stepping is the little stepping simple signal of 100KHz, and carries out power amplification and filtering by described first power amplification circuit and the 3rd low-pass filter circuit.Be illustrated in figure 4 the circuit diagram of integrated phase lock loop circuit and the first power amplification circuit shown in Fig. 5.
Further, as shown in Figure 6, described mixing unit adopts frequency mixer HMC213AMS8, described low frequency comb spectrum signal F1 is input to the RF pin of frequency mixer HMC213AMS8 as radio frequency, described single frequency point signal F2 is input to the LO pin of frequency mixer HMC213AMS8 as local oscillation signal, and the IF pin of this frequency mixer HMC213AMS8 exports the comb spectrum signal F3 of 30MHz-3600MHz.
Further, as shown in Figure 7, described power control unit adopts program control decay chip PE4302, for realizing the adjustable attenuation of 0-31dB, and the ultrashort wave comb spectrum signal F of the 30MHz-3600MHz that the output power output of this power control unit is controlled.
Figure 8 shows that certain frequency comb spectrum signal spectra line chart, Figure 9 shows that certain frequency comb spectrum signal spectrum interval and spectral line flatness resolution chart, Figure 10 shows that certain frequency comb spectrum signal noise resolution chart.
In above-described embodiment of the application, by providing a kind of ultrashort wave comb spectrum signal generating circuit, comprise low frequency comb spectrum signal generation unit, little stepping single frequency point signal generation unit, mixing unit, filter and amplification unit and power control unit, wherein the first reference signal obtains low frequency comb spectrum signal F1 through described low frequency comb spectrum signal generation unit, second reference signal obtains single frequency point signal F2 through described little stepping single frequency point signal generation unit, using F1 as radiofrequency signal, F2 is input to described mixing unit as local oscillation signal, produce comb spectrum signal F3, this comb spectrum signal F3 is after the corresponding harmonic components of described filter and amplification unit filtering, be input to described power control unit Modulating Power, thus obtain the controlled ultrashort wave comb spectrum signal F of power.The utility model, in wider frequency range, under ensureing the prerequisite at certain spectral line interval, achieves the function that little stepping, low spurious, low phase noise and fast frequency switch.
It should be noted that; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing; the change that those skilled in the art make in essential scope of the present utility model, modification, interpolation or replacement, also should belong to protection range of the present utility model.
Claims (5)
1. a ultrashort wave comb spectrum signal generating circuit, is characterized in that, comprises low frequency comb spectrum signal generation unit, little stepping single frequency point signal generation unit, mixing unit, filter and amplification unit and power control unit, wherein:
Described low frequency comb spectrum signal generation unit is connected in sequence by snap-off diode, the first low-pass filter circuit, saturation amplification circuit, the second low-pass filter circuit, described snap-off diode carries out frequency multiplication to the first reference signal, signal after frequency multiplication is through the unnecessary spectral line of described first low-pass filter circuit filtering, and then carry out power amplification by described saturation amplification circuit, finally carry out filtering by the second low-pass filter circuit again and obtain low frequency comb spectrum signal F1;
Described little stepping single frequency point signal generation unit is connected in sequence by integrated phase lock loop circuit, the first power amplification circuit, the 3rd low-pass filter circuit, described integrated phase lock loop circuit carries out process to the second reference signal and obtains little stepping simple signal, this little stepping simple signal, after described first power amplification circuit carries out power amplification, carries out filtering by described 3rd low-pass filter circuit and obtains single frequency point signal F2;
Described low frequency comb spectrum signal F1 and described single frequency point signal F2 sends into described mixing unit and carries out Frequency mixing processing and obtain comb spectrum signal F3, this comb spectrum signal F3 is after the corresponding harmonic components of described filter and amplification unit filtering, be input to described power control unit and realize power adjustment, final output obtains the controlled ultrashort wave comb spectrum signal F of power.
2. ultrashort wave comb spectrum signal generating circuit according to claim 1, is characterized in that, described snap-off diode adopts BT5B to carry out frequency multiplication to the first reference signal, obtains the low frequency comb spectrum signal being spaced apart 0.5MHz.
3. ultrashort wave comb spectrum signal generating circuit according to claim 1, it is characterized in that, described integrated phase lock loop circuit adopts ADF4350BCPZ, and the second reference signal produces 30MHz-3600MHz after described integrated phase lock loop circuit, and stepping is the little stepping simple signal of 100KHz.
4. ultrashort wave comb spectrum signal generating circuit according to claim 1, it is characterized in that, described mixing unit adopts frequency mixer HMC213AMS8, described low frequency comb spectrum signal F1 is input to the RF pin of frequency mixer HMC213AMS8 as radio frequency, described single frequency point signal F2 is input to the LO pin of frequency mixer HMC213AMS8 as local oscillation signal, and the IF pin of this frequency mixer HMC213AMS8 exports the comb spectrum signal F3 of 30MHz-3600MHz.
5. ultrashort wave comb spectrum signal generating circuit according to claim 1, it is characterized in that, described power control unit adopts program control decay chip PE4302, for realizing the adjustable attenuation of 0-31dB, the ultrashort wave comb spectrum signal F of the 30MHz-3600MHz that the output power output of this power control unit is controlled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520646465.4U CN205017281U (en) | 2015-08-25 | 2015-08-25 | Ultrashort wave pectination spectrum signal produces circuit |
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| CN201520646465.4U CN205017281U (en) | 2015-08-25 | 2015-08-25 | Ultrashort wave pectination spectrum signal produces circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209096A (en) * | 2016-07-26 | 2016-12-07 | 中国电子科技集团公司第二十九研究所 | A kind of Low phase noise bandwidth frequency synthetic method based on dicyclo mixing and system |
| CN106533435A (en) * | 2016-09-29 | 2017-03-22 | 中国电子科技集团公司第二十九研究所 | Method and system for calculating 2N real sequence by using one N complex FFT |
| CN112187182A (en) * | 2020-10-22 | 2021-01-05 | 上海航天电子通讯设备研究所 | Satellite-borne X-frequency band miniaturized high-order frequency doubling device |
-
2015
- 2015-08-25 CN CN201520646465.4U patent/CN205017281U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209096A (en) * | 2016-07-26 | 2016-12-07 | 中国电子科技集团公司第二十九研究所 | A kind of Low phase noise bandwidth frequency synthetic method based on dicyclo mixing and system |
| CN106533435A (en) * | 2016-09-29 | 2017-03-22 | 中国电子科技集团公司第二十九研究所 | Method and system for calculating 2N real sequence by using one N complex FFT |
| CN112187182A (en) * | 2020-10-22 | 2021-01-05 | 上海航天电子通讯设备研究所 | Satellite-borne X-frequency band miniaturized high-order frequency doubling device |
| CN112187182B (en) * | 2020-10-22 | 2023-05-23 | 上海航天电子通讯设备研究所 | Space-borne X-frequency-band miniaturized high-order frequency doubling device |
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Address after: Building 2, No. 25 Qiangwei Road, Changshengqiao Town, Nan'an District, Chongqing, 401336 Patentee after: CHONGQING HUILING ELECTRON NEW TECHNOLOGY Co.,Ltd. Country or region after: China Address before: 401336 No. 7 Camellia Road, Nan'an District, Chongqing Patentee before: CHONGQING HUILING ELECTRON NEW TECHNOLOGY Co.,Ltd. Country or region before: China |