CN110190813A - A kind of coaxial dielectric oscillator - Google Patents
A kind of coaxial dielectric oscillator Download PDFInfo
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- CN110190813A CN110190813A CN201910482014.4A CN201910482014A CN110190813A CN 110190813 A CN110190813 A CN 110190813A CN 201910482014 A CN201910482014 A CN 201910482014A CN 110190813 A CN110190813 A CN 110190813A
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- signal
- coaxial dielectric
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B1/00—Details
- H03B1/02—Structural details of power oscillators, e.g. for heating
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B1/00—Details
- H03B1/04—Reducing undesired oscillations, e.g. harmonics
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
Present invention discloses a kind of coaxial dielectric oscillators, the signal of reference source output is delivered to analogue phase detection device, reference source signal and power coupler feedback signal are carried out phase bit comparison by the analogue phase detection device, phase difference generation voltage is delivered to loop filter by the analogue phase detection device, filtered signal is delivered to coaxial dielectric voltage controlled oscillator by the loop filter, the coaxial dielectric voltage controlled oscillator is to being delivered to the power coupler after input signal making frequency adjustment, signal is fed back to analogue phase detection device by the power coupler, the frequency signal of generation is delivered to power amplifier after bandpass filter selects required frequency signal by output simultaneously, the power amplifier exports signal after filtering out extra spuious and harmonic wave by output filter outward.It is a kind of with high-frequency purity, high frequency stability, Low phase noise and high shock resistance energy Microwave Frequency Source.
Description
Technical field
The present invention relates to frequency synthesis and microwave oscillation source domain more particularly to a kind of miniaturization, anti-vibration, Low phase noise locks
Same axis dielectric oscillator (CDRO).
Background technique
Microwave oscillator in microwave equipment as local vibration source is one of core component crucial in system.With logical
The development of the technologies such as letter, DTV, satellite positioning, aerospace, radar and electronic countermeasure, microwave system is to all kinds of information sources
It is required that higher and higher.Phase noise specifications are extremely important in the parameters of microwave oscillator, and the superiority and inferiority of performance can be direct
The performance for influencing phase modulation system, also has a major impact the bit error rate of digital communication system；And the sheet of anti-vibration Low phase noise
Vibration source is even more particularly important, and Low phase noise phase lock dielectric oscillator (PDRO) is especially under the harsh environment scenarios such as airborne vibration at present
The phase noise of frequency source deteriorates very serious.To solve the above-mentioned problems, it needs to increase precautions against earthquakes and circuit structure, thus
Increase the volume of local vibration source, while circuit structure complexity poor reliability.
Summary of the invention
It is a kind of using the same of locking phase synthetic medium cavity oscillation device technology the technical problem to be solved by the present invention is to realize
Axis dielectric oscillator.
To achieve the goals above, the technical solution adopted by the present invention are as follows: a kind of coaxial dielectric oscillator, reference source output
Signal be delivered to analogue phase detection device, reference source signal and power coupler feedback signal are carried out phase by the analogue phase detection device
Compare, phase difference generation voltage is delivered to loop filter by the analogue phase detection device, and the loop filter will be filtered
Signal is delivered to coaxial dielectric voltage controlled oscillator, and the coaxial dielectric voltage controlled oscillator is to defeated after input signal making frequency adjustment
It send to the power coupler, signal is fed back to analogue phase detection device by the power coupler, while being exported the frequency of generation
Signal is delivered to power amplifier after bandpass filter selects required frequency signal, and the power amplifier passes through output
Filter exports signal after filtering out extra spuious and harmonic wave outward.
The component of the coaxial dielectric oscillator is each attached in cavity, and the cavity hatch pass through cover plate for sealing,
The cavity and cover board are aluminium.
The cavity side is fixed with two sub-miniature A connectors, two sub-miniature A connectors be separately connected reference source input terminal and
The output end of output filter.
Phase-locked loop circuit plate and filtering and amplifying circuit plate are fixed in the cavity side by side, on the filtering and amplifying circuit plate
It is fixed with reference source, analogue phase detection device and loop filter, the phase-locked loop circuit plate coaxial dielectric voltage controlled oscillator, power coupling
Clutch, bandpass filter, power amplifier and output filter,
Pass through insulator inner conductor transmission frequency signal and electricity between the phase-locked loop circuit plate and filtering and amplifying circuit plate
Source power supply.
The coaxial dielectric voltage controlled oscillator is mounted on phase-locked loop circuit plate using welding method.
The shortcomings that present invention can make up for it traditional PDRO technology using locking phase synthetic medium cavity oscillation device technology, has
Output frequency can by program flexible setting, the advantages of circuit structure is simple and high reliablity, pass through reasonable circuit design phase
Noise can reach or more than PDRO level, due to using medium cavity oscillation device, without in the frequency for needing DRO that must be attached to
Tuning plug, to have good anti-seismic performance.Therefore locking phase CDRO is incited somebody to action in applying for antidetonation low phase noise microwave local oscillator
More extensively.
Detailed description of the invention
Below to width attached drawing every in description of the invention expression content and figure in label be briefly described:
Fig. 1 is antidetonation Low phase noise locking phase coaxial dielectric pierce circuit functional block diagram；
Fig. 2 is antidetonation Low phase noise locking phase coaxial dielectric oscillator module actual circuit structure schematic diagram；
Label in above-mentioned figure is equal are as follows: 11, reference source；12, analogue phase detection device；13, loop filter；14, coaxial dielectric
Voltage controlled oscillator；15, power coupler；16, bandpass filter；17, power amplifier；18, output filter；20, high q-factor is thin
Membrane capacitance；21, phase-locked loop circuit plate；22, filtering and amplifying circuit plate；23, cavity；24, sub-miniature A connector；25, feedthrough capacitor；26, absolutely
Edge inner conductor；27, screw；28, cover board.
Specific embodiment
Below against attached drawing, by the description of the embodiment, for example related each component of a specific embodiment of the invention
Shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technology
Scheme has more complete, accurate and deep understanding.
The present invention is that a kind of high and low phase of microwave frequency band anti-seismic performance is made an uproar locking phase coaxial dielectric oscillator, it is one kind by micro-
The coaxial dielectric voltage controlled oscillator 14 that wave coaxial dielectric resonator is made controls coaxial dielectric pressure using digital lock-in technique
Oscillator 14 is controlled, to realize frequency stabilization.Exactly because having used coaxial dielectric resonator rather than dielectric resonator, it is not
Frequency tuning bar is needed, there is good anti-seismic performance, while there is ultralow phase noise again, is a kind of pure with high-frequency
Degree, high frequency stability, Low phase noise and high shock resistance energy Microwave Frequency Source.
Antidetonation Low phase noise locking phase coaxial dielectric oscillator mainly by coaxial dielectric voltage controlled oscillator 14, analogue phase detection device 12,
The composition such as loop filter 13, power coupler 15, amplifier, filter and reference source 11.It is designed and is made using serial Feedback method
Make ultralow phase noise coaxial dielectric voltage controlled oscillator 14, phase noise is reduced using high q-factor thin-film capacitor 20 in circuit, leads to
Crossing simulation optimization design loop parameter makes the CDRO after digital servo-control possess good phase noise performance, while obtaining and referring to
The identical frequency stability in source 11.Wherein coaxial dielectric voltage controlled oscillator 14, digital phase discriminator, loop filter 13, power coupling
The basic locking phase CDRO of compositions such as clutch 15 and reference source 11, it is the core of this patent, is set by reasonable micropackaging circuit
Meter can make its miniaturized structure and output stage low phase noise.Output signal selects higher hamonic wave by bandpass filter 16,
Again by can reach required frequency after High frequency amplification, micro-strip filtering processing.The circuit board of basic locking phase CDRO is using pottery
Porcelain substrate, required component, diode, triode, amplifier etc. use naked core element, and partial circuit technique uses thin film circuit
Technique；Antidetonation Low phase noise locking phase CDRO parameters simulation is mainly obtained by software emulations such as ADS and HFSS, for device and process water
It is flat to carry out the regulation of electrical circuit, the final circuit structure for determining digital servo-control CDRO；11 crystal oscillator of reference source is constant temperature crystal vibration
Swinging device, constant-temperature crystal oscillator is mutually made an uproar lower than -160dBc/Hz@1KHz, and constant-temperature crystal oscillator frequency stability is less than ±
1ppm.The locking phase CDRO of the antidetonation low phase noise of X-band is made of the above method, test result shows its static phase
Noise is -108dBc/Hz@1kHz, -115dBc/Hz@10kHz, and vibration meets 0.08g2/Hz.
Antidetonation Low phase noise locking phase coaxial dielectric oscillator CDRO actual circuit structure is by phase-locked loop circuit plate, amplification filtered electrical
Road plate, cavity, sub-miniature A connector, feedthrough capacitor, insulator inner conductor, screw and cover board composition；Antidetonation Low phase noise locking phase coaxial dielectric
The coaxial dielectric resonator and high q-factor thin-film capacitor of oscillator CDRO is all made of welding method installation on circuit boards, with surrounding
Circuit generates concussion, realizes the frequency signal for generating the antidetonation Low phase noise high stable of coaxial dielectric voltage controlled oscillator；The low phase of antidetonation
Cover board and cavity are sealed welding using Parallel Seam Sealing Technology technology by the cover board of locking phase of making an uproar coaxial dielectric oscillator CDRO,
Has the advantages that good leakproofness.
If Fig. 1 antidetonation low phase noise locking phase coaxial dielectric oscillator principle block diagram is mainly by reference source 11, analogue phase detection
Device 12, loop filter 13, coaxial dielectric voltage controlled oscillator 14, power coupler 15, bandpass filter 16, power amplifier
17, output filter 18 etc. forms.The signal of 11 signal of reference source and coaxial dielectric voltage controlled oscillator output is inputted through overpower
15 feedback signal of coupler carries out phase bit comparison in analogue phase detection device 12, and phase difference generates voltage and filters by loop filter 13
After wave, it is sent into 14 making frequency adjustment of coaxial dielectric voltage controlled oscillator, generates the frequency signal of high stable by power coupler
15, required frequency signal is selected by bandpass filter 16, reaches certain power by power amplifier 17, then pass through
Output filter filters out extra spuious and harmonic wave, to export the frequency meter signal of clean high stable high-frequency stabilization.
Actual circuit structure schematic diagram is as shown in Fig. 2, antidetonation inside antidetonation low phase noise locking phase coaxial dielectric oscillator
Locking phase CDRO mainly by phase-locked loop circuit plate 21, filtering and amplifying circuit plate 22, cavity 23, sub-miniature A connector 24, feedthrough capacitor 25, absolutely
Edge inner conductor 26, the composition such as screw 27 and cover board 28.Phase-locked loop circuit plate 21 completes coaxial dielectric voltage controlled oscillator 14 and ginseng
Examine the phase bit comparison, locking, the frequency signal for generating high stable Low phase noise of signal source；Filtering and amplifying circuit plate 22 realizes signal times
Frequency and power amplification, and filter out clean high-frequency signal output；Two pieces of circuit boards use FR-4 plate, all to use
Electronic component is SMD components.Cavity 23 is for placing each circuit board, the electromagnetism such as completion is mechanically fixed, signal shielding is isolated
Functions, the materials such as the heat dissipation of compatible and circuit are duralumin.Sub-miniature A connector 24 completes the reference source signal input and anti-vibration of high stable
The output of low phase noise locking phase CDRO signal, material are that stainless steel is gold-plated.Feedthrough capacitor 25 is respectively used to direct current input and lock
Determine indication signal output, insulator inner conductor 26 is respectively used to transmission frequency signal and power supply power supply, screw between two circuit boards
27 are respectively intended to fixed each circuit board of sub-miniature A connector, and cover board 28 is used for seal cavity, using Parallel Seam Sealing Technology technology cover board with
Cavity is sealed welding.
Wherein coaxial dielectric voltage controlled oscillator 14 and high q-factor thin-film capacitor 20 are all made of welding method and are mounted on phaselocked loop electricity
On road plate 21, concussion is generated with peripheral circuits, realizes the high stable frequency letter of the antidetonation Low phase noise of coaxial dielectric voltage controlled oscillator
Number.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (6)
1. a kind of coaxial dielectric oscillator, it is characterised in that: the signal of reference source output is delivered to analogue phase detection device, the simulation
Reference source signal and power coupler feedback signal are carried out phase bit comparison by phase discriminator, and the analogue phase detection device generates phase difference
Voltage is delivered to loop filter, and filtered signal is delivered to coaxial dielectric voltage controlled oscillator by the loop filter, institute
It states coaxial dielectric voltage controlled oscillator and is coupled to the power coupler, the power is delivered to after input signal making frequency adjustment
Signal is fed back to analogue phase detection device by device, while exporting the frequency signal of generation selecting required frequency through bandpass filter
Power amplifier is delivered to after signal, the power amplifier will letter after filtering out extra spuious and harmonic wave by output filter
Number outward output.
2. coaxial dielectric oscillator according to claim 1, it is characterised in that: the component of the coaxial dielectric oscillator
It is each attached in cavity, for the cavity hatch by cover plate for sealing, the cavity and cover board are aluminium.
3. coaxial dielectric oscillator according to claim 1 or 2, it is characterised in that: the cavity side is fixed with two
Sub-miniature A connector, two sub-miniature A connectors are separately connected the input terminal of reference source and the output end of output filter.
4. coaxial dielectric oscillator according to claim 3, it is characterised in that: be fixed with phaselocked loop side by side in the cavity
Circuit board and filtering and amplifying circuit plate are fixed with reference source, analogue phase detection device and loop filtering on the filtering and amplifying circuit plate
Device, the phase-locked loop circuit plate coaxial dielectric voltage controlled oscillator, power coupler, bandpass filter, power amplifier and output
Filter.
5. coaxial dielectric oscillator according to claim 4, it is characterised in that: the phase-locked loop circuit plate and amplification filtering
Pass through insulator inner conductor transmission frequency signal and power supply power supply between circuit board.
6. coaxial dielectric oscillator according to claim 5, it is characterised in that: the coaxial dielectric voltage controlled oscillator uses
Welding method is mounted on phase-locked loop circuit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482014.4A CN110190813A (en) | 2019-06-04 | 2019-06-04 | A kind of coaxial dielectric oscillator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910482014.4A CN110190813A (en) | 2019-06-04 | 2019-06-04 | A kind of coaxial dielectric oscillator |
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| Publication Number | Publication Date |
|---|---|
| CN110190813A true CN110190813A (en) | 2019-08-30 |
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| CN201910482014.4A Pending CN110190813A (en) | 2019-06-04 | 2019-06-04 | A kind of coaxial dielectric oscillator |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187268A (en) * | 1995-04-19 | 1998-07-08 | 艾利森电话股份有限公司 | Apparatus and method for employing negative FM feedback in high quality oscillating device |
| CN102739243A (en) * | 2012-06-29 | 2012-10-17 | 安徽华东光电技术研究所 | Low phase noise phase-locked medium oscillator |
-
2019
- 2019-06-04 CN CN201910482014.4A patent/CN110190813A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187268A (en) * | 1995-04-19 | 1998-07-08 | 艾利森电话股份有限公司 | Apparatus and method for employing negative FM feedback in high quality oscillating device |
| CN102739243A (en) * | 2012-06-29 | 2012-10-17 | 安徽华东光电技术研究所 | Low phase noise phase-locked medium oscillator |
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Application publication date: 20190830 |
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