CN105577182A - W-band low phase noise phase-locked source and use method thereof - Google Patents
W-band low phase noise phase-locked source and use method thereof Download PDFInfo
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- CN105577182A CN105577182A CN201510935226.5A CN201510935226A CN105577182A CN 105577182 A CN105577182 A CN 105577182A CN 201510935226 A CN201510935226 A CN 201510935226A CN 105577182 A CN105577182 A CN 105577182A
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- 239000013078 crystal Substances 0.000 claims abstract description 23
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/10—Indirect frequency synthesis using a frequency multiplier in the phase-locked loop or in the reference signal path
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/12—Indirect frequency synthesis using a mixer in the phase-locked loop
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Abstract
The invention discloses a W-band low phase noise phase-locked source and a use method thereof. The first output end of a crystal oscillator is connected with a frequency multiplier group. The output end of the frequency multiplier group is connected with a band-pass filter. The output end of the band-pass filter is connected with the first input end of a harmonic frequency mixer. The second output end of the crystal oscillator is connected with the first input end of a phase discriminator. The output end of the phase discriminator is connected with a loop filter. The output end of the loop filter is connected with a voltage controlled oscillator. The first output end of the voltage controlled oscillator is connected with the second input end of the harmonic frequency mixer. The output end of the harmonic frequency mixer is connected with a low-pass filter. The output end of the low-pass filter is connected with the second input end of the phase discriminator. The second output end of the voltage controlled oscillator outputs a signal source. The W-band low phase noise phase-locked source and the use method thereof are based on "fundamental wave phase locking and harmonic wave output" so that working frequency of a frequency source is enhanced. The mode of frequency multiplication and the scheme of frequency mixing and phase locking are adopted so that the difficulties that phase noise of the millimeter wave frequency band is relatively high and the loop is not easy to lock can be overcome, and thus the system is ensured to have great phase noise and stray and other indexes in the W-band.
Description
Technical field
The present invention relates to a kind of W-waveband Low phase noise phase locked source and using method thereof.
Background technology
Millimeter wave frequency is very high, and on-line operation is difficult to realize at the frequency divider of millimeter wave frequency band, the mode that therefore the direct frequency division of millimeter wave phase-locked inconvenience employing microwave is phase-locked; Sampling Phase Discriminator can work millimeter wave, also have the Sampling Phase Discriminator report being operated in 45GHz abroad, but the technological level required is very high, is difficult to realize.Domestic market also adopted locking fundamental frequency, through amplification, frequency multiplication, the repeatedly cascade of filtering link, finally obtains millimeter wave frequency source, but this mode volume is very large, what the nonlinear distortion that frequency multiplier is introduced was brought is spuiously difficult to filtering.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of W-waveband Low phase noise phase locked source is provided, based on the conception of " first-harmonic is phase-locked; harmonic wave ", improve the operating frequency of frequency source, adopt frequency multiplication mode, mixing adds phase-locked scheme, overcome the difficulty that millimeter wave frequency band phase noise is higher, loop not easily locks, the system that can ensure has in W-waveband makes an uproar and the index such as spuious preferably mutually.
The object of the invention is to be achieved through the following technical solutions: W-waveband Low phase noise phase locked source, it comprises crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator, harmonic mixer, low pass filter, band pass filter, frequency multiplier group, first output of crystal oscillator is connected with frequency multiplier group, the output of frequency multiplier group is connected with band pass filter, the output of band pass filter is connected with the first input end of harmonic mixer, second output of crystal oscillator is connected with the first input end of phase discriminator, the output of phase discriminator is connected with loop filter, the output of loop filter is connected with voltage controlled oscillator, first output of voltage controlled oscillator is connected with the second input of harmonic mixer, the output of harmonic mixer is connected with low pass filter, the output of low pass filter is connected with the second input of phase discriminator, second output signal source output of voltage controlled oscillator.
Described frequency multiplier group comprises the frequency multiplier that three random orders are in series, and is respectively (frequency) tripler, (frequency) tripler and quintupler.
Described voltage controlled oscillator is honest and just formula dual-port oscillator.
Described crystal oscillator is constant-temperature crystal oscillator.
The using method of W-waveband Low phase noise phase locked source, comprises the following steps:
S1: in microwave band frequency multiplication: carry out secondary frequency multiplication to crystal oscillator, then through frequency multiplier group and band pass filter, exports the microwave signal source of C-band to harmonic mixer;
S2: an other road signal of crystal oscillator exports successively by phase discriminator, loop filter, voltage controlled oscillator, and voltage controlled oscillator exports harmonic mixer to after forming fundamental signal;
S3: the fundamental signal of the microwave signal source of C-band and voltage controlled oscillator is carried out multiple harmonic mixing by harmonic mixer, exports intermediate-freuqncy signal;
S4: intermediate-freuqncy signal is carried out amplification phase-locked, form millimeter wave phase-locked loop, described millimeter wave phase-locked loop comprises harmonic mixer, low pass filter, phase discriminator, loop filter, the voltage controlled oscillator of loop connecting in turn; Wherein export millimeter wave by voltage controlled oscillator.
The invention has the beneficial effects as follows:
(1) adopt mixing schemes, drive harmonic mixer with the microwave source of high stable, then the intermediate frequency obtained mixing is phase-locked.The microwave source comparative maturity of high stable, easily realizes, and ready-made microlock also can be utilized frequently to combine or frequency multiplication source.If microwave source adopts phase locked source, just form many ring locks phase system, finally obtain millimeter wave frequency source.
(2) realize the little advantage of volume by honest and just formula dual-port oscillator, make mixed frequency signal remain on C-band by harmonic mixer, the noise basis that employing frequency multiplication source can reduce microwave loop is low, realizes Low phase noise source of the present invention.
(3) by integrated use radio-frequency channel designing technique, frequency source designing technique and cavity body structure designing technique, have employed up-to-date high performance device, improve product advance.The millimeter wave frequency source realized has the advantages such as output frequency is high, spurious reduction is high, phase noise is low, volume is little.Enhance the R&D capability of company in frequency synthesizer field, improve product commercially occupation rate.
Accompanying drawing explanation
Fig. 1 is block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail: as shown in Figure 1, W-waveband Low phase noise phase locked source, it comprises crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator, harmonic mixer, low pass filter, band pass filter, frequency multiplier group.
First output of crystal oscillator is connected with frequency multiplier group, the output of frequency multiplier group is connected with band pass filter, the output of band pass filter is connected with the first input end of harmonic mixer, second output of crystal oscillator is connected with the first input end of phase discriminator, the output of phase discriminator is connected with loop filter, the output of loop filter is connected with voltage controlled oscillator, first output of voltage controlled oscillator is connected with the second input of harmonic mixer, the output of harmonic mixer is connected with low pass filter, the output of low pass filter is connected with the second input of phase discriminator, second output signal source output of voltage controlled oscillator.
Frequency multiplier circuit structure is comparatively simple, can realize miniaturization, and phase noise is according to deterioration, and the noise basis that employing frequency multiplication source can reduce microwave loop is low, realizes Low phase noise source of the present invention.
Described frequency multiplier group comprises the frequency multiplier that three random orders are in series, and is respectively (frequency) tripler, (frequency) tripler and quintupler.
Described voltage controlled oscillator is honest and just formula dual-port oscillator.
Described crystal oscillator is constant-temperature crystal oscillator.
The using method of W-waveband Low phase noise phase locked source, comprises the following steps:
S1: in microwave band frequency multiplication: secondary frequency multiplication is carried out to the crystal oscillator of 50MHz, then through two-stage three frequencys multiplication, last five frequencys multiplication, export the microwave signal source of 4.5GHz to harmonic mixer;
S2: an other road signal of crystal oscillator exports successively by phase discriminator, loop filter, voltage controlled oscillator, and voltage controlled oscillator exports harmonic mixer to after forming fundamental signal;
S3: the fundamental signal of the microwave source of 4.5GHz and gunn dual-port VCO is carried out ten subharmonic mixing by harmonic mixer, exports the intermediate-freuqncy signal of 900MHz;
S4: amplification is carried out to intermediate-freuqncy signal phase-locked, form millimeter wave phase-locked loop, described millimeter wave phase-locked loop comprises harmonic mixer, low pass filter, phase discriminator, loop filter, the voltage controlled oscillator of loop connecting in turn; Wherein export millimeter wave by voltage controlled oscillator.
The present invention adopts the hybrid frequency synthesis mode of gunn dual-port oscillator, phase discriminator, frequency multiplier, millimeter wave harmonic mixer, low pass filter, has that output frequency is high, volume is little (realizing this advantage by honest and just formula dual-port oscillator), spurious reduction advantages of higher.
Particularly, the present invention adopts mixing schemes, drives harmonic mixer, then carry out phase-locked to the intermediate-freuqncy signal that mixing obtains with the microwave source of high stable.The microwave source comparative maturity of high stable, easily realizes, and ready-made microlock also can be utilized frequently to combine or frequency multiplication source.If microwave source adopts phase locked source, just form many ring locks phase system, finally obtain millimeter wave frequency source.
In addition, the present invention also has shielding design:
The design of power supply, local vibration source, digital processing plate etc. is spaced from each other as far as possible, is produced on different PCB, is divided in each little cavity of cavity.Whole HFS is separated completely with low frequency part, each functional circuit can be avoided so mutually to disturb, reach good shield effectiveness.
Claims (5)
1.W wave band Low phase noise phase locked source, is characterized in that: it comprises crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator, harmonic mixer, low pass filter, band pass filter, frequency multiplier group, first output of crystal oscillator is connected with frequency multiplier group, the output of frequency multiplier group is connected with band pass filter, the output of band pass filter is connected with the first input end of harmonic mixer, second output of crystal oscillator is connected with the first input end of phase discriminator, the output of phase discriminator is connected with loop filter, the output of loop filter is connected with voltage controlled oscillator, first output of voltage controlled oscillator is connected with the second input of harmonic mixer, the output of harmonic mixer is connected with low pass filter, the output of low pass filter is connected with the second input of phase discriminator, second output signal source output of voltage controlled oscillator.
2. W-waveband Low phase noise phase locked source according to claim 1, is characterized in that: described frequency multiplier group comprises the frequency multiplier that three random orders are in series, and is respectively (frequency) tripler, (frequency) tripler and quintupler.
3. W-waveband Low phase noise phase locked source according to claim 1, is characterized in that: described voltage controlled oscillator is honest and just formula dual-port oscillator.
4. W-waveband Low phase noise phase locked source according to claim 1, is characterized in that: described crystal oscillator is constant-temperature crystal oscillator.
5., as the using method of the W-waveband Low phase noise phase locked source in claim 1 ~ 4 as described in any one, it is characterized in that: comprise the following steps:
S1: in microwave band frequency multiplication: carry out secondary frequency multiplication to crystal oscillator, then through frequency multiplier group and band pass filter, exports the microwave signal source of C-band to harmonic mixer;
S2: an other road signal of crystal oscillator exports successively by phase discriminator, loop filter, voltage controlled oscillator, and voltage controlled oscillator exports harmonic mixer to after forming fundamental signal;
S3: the fundamental signal of the microwave signal source of C-band and voltage controlled oscillator is carried out multiple harmonic mixing by harmonic mixer, exports intermediate-freuqncy signal;
S4: intermediate-freuqncy signal is carried out amplification phase-locked, form millimeter wave phase-locked loop, described millimeter wave phase-locked loop comprises harmonic mixer, low pass filter, phase discriminator, loop filter, the voltage controlled oscillator of loop connecting in turn; Wherein export millimeter wave by voltage controlled oscillator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510935226.5A CN105577182B (en) | 2015-12-15 | 2015-12-15 | W-waveband Low phase noise phase locked source and its application method |
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| CN201510935226.5A CN105577182B (en) | 2015-12-15 | 2015-12-15 | W-waveband Low phase noise phase locked source and its application method |
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| CN105577182A true CN105577182A (en) | 2016-05-11 |
| CN105577182B CN105577182B (en) | 2019-04-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107925413A (en) * | 2016-08-05 | 2018-04-17 | 亚库蒂尔·约瑟夫斯伯格 | Ultralow phase noise frequency synthesizer |
| CN107994899A (en) * | 2017-12-28 | 2018-05-04 | 安徽华东光电技术研究所 | Efficiently use the system and method for voltage controlled oscillator output frequency |
| CN113162617A (en) * | 2021-02-23 | 2021-07-23 | 深圳市华讯方舟光电技术有限公司 | Low-phase-noise X-band frequency source and modulation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060059115A (en) * | 2004-11-27 | 2006-06-01 | 삼성전자주식회사 | Frequency synthesizer using sampler and automatic frequency control circuit |
| CN202364201U (en) * | 2011-09-28 | 2012-08-01 | 重庆会凌电子新技术有限公司 | Low phase noise high speed frequency synthesizer |
| CN204180052U (en) * | 2014-09-12 | 2015-02-25 | 安徽四创电子股份有限公司 | The phase-locked frequency hopping synthesizer of a kind of X-band shift frequency |
-
2015
- 2015-12-15 CN CN201510935226.5A patent/CN105577182B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060059115A (en) * | 2004-11-27 | 2006-06-01 | 삼성전자주식회사 | Frequency synthesizer using sampler and automatic frequency control circuit |
| CN202364201U (en) * | 2011-09-28 | 2012-08-01 | 重庆会凌电子新技术有限公司 | Low phase noise high speed frequency synthesizer |
| CN204180052U (en) * | 2014-09-12 | 2015-02-25 | 安徽四创电子股份有限公司 | The phase-locked frequency hopping synthesizer of a kind of X-band shift frequency |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107925413A (en) * | 2016-08-05 | 2018-04-17 | 亚库蒂尔·约瑟夫斯伯格 | Ultralow phase noise frequency synthesizer |
| CN107994899A (en) * | 2017-12-28 | 2018-05-04 | 安徽华东光电技术研究所 | Efficiently use the system and method for voltage controlled oscillator output frequency |
| CN113162617A (en) * | 2021-02-23 | 2021-07-23 | 深圳市华讯方舟光电技术有限公司 | Low-phase-noise X-band frequency source and modulation method thereof |
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| CN105577182B (en) | 2019-04-16 |
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