CN202050403U - K-band low-phase noise signal source - Google Patents
K-band low-phase noise signal source Download PDFInfo
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- CN202050403U CN202050403U CN2011200659415U CN201120065941U CN202050403U CN 202050403 U CN202050403 U CN 202050403U CN 2011200659415 U CN2011200659415 U CN 2011200659415U CN 201120065941 U CN201120065941 U CN 201120065941U CN 202050403 U CN202050403 U CN 202050403U
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Abstract
The utility model discloses a K-band low-phase noise signal source, which comprises a shielded enclosure and a microwave circuit in the shielded enclosure. The microwave circuit comprises a frequency synthesizer, a first filter, a first frequency multiplier, a second filter, a second frequency multiplier and a third filter which are sequentially connected. The frequency synthesizer comprises a phase-locked loop circuit and a voltage-controlled oscillator. After phase difference between external standard frequency signals and signals fed back by the rear end of the voltage-controlled oscillator is discriminated in the phase discriminator of the phase-locked loop circuit, the phase discriminator outputs a control voltage signal to the voltage-controlled oscillator. The noise of the K-band low-phase noise signal source can reach negative 90dBc/Hz at 10KHz and 10K stepped rapid frequency conversion can be realized. The K-band low-phase noise signal source has the advantages of small volume, high integrated level, low cost and the like. After the K-band low-phase noise signal source is used in the field of radio-frequency transceivers, the stability of the radio-frequency transceivers can be obviously increased, the receiving sensitivity can be improved, the operating distance of a communication system can be improved and the subscriber capacity can be increased.
Description
Technical field
The signal source that the utility model relates to, what be specifically related to is K wave band low phase noise signal source.
Background technology
Reliably low phase noise signal source is the indispensable Key Circuit of contemporary communication system, and the realization of electronic equipment and system all depends on the performance of signal source.The development of communication and electronic warfare is had higher requirement to the system indexs such as precision, frequency stability and sensitivity of electronic system, and is also accordingly more and more higher to the signal source index as the core.The signal source of the function admirable of this frequency range is carried out blockade on new techniques to China in the world at present, promptly allows to buy finished product and also costs an arm and a leg; It is relatively poor to investigate domestic similar sound product technical indicator, best noise can only reach-75dBc/Hz10KHz, volume greatly and major part be a frequency, cost is higher.
The utility model content
At the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of noise can reach-90dBc/Hz10KHz and the K wave band low phase noise signal source that can carry out the quick frequency conversion of 10K stepping, has that volume is little, integrated level is high and low cost and other advantages.
To achieve these goals, the utility model is to realize by the following technical solutions:
The utility model comprises the microwave circuit in shield shell and the shield shell, and microwave circuit comprises frequency synthesizer, first filter, first frequency multiplier, second filter, second frequency multiplier and the 3rd filter that connects successively;
Frequency synthesizer comprises phase-locked loop circuit and voltage controlled oscillator; The signal that outside standard-frequency signal and voltage controlled oscillator rear end feedback are come is after discriminating differs in the phase discriminator of phase-locked loop circuit, by phase discriminator output control voltage of voltage-controlled oscillator signal.
Be connected with loop filter between above-mentioned phase discriminator and the voltage controlled oscillator.
The utility model also comprises power splitter, and power splitter is connected described the 3rd filter rear end.
Above-mentioned second filter is a microstrip bandpass filter.
Above-mentioned the 3rd filter is the cavity interdigital filter.
The said frequencies synthesizer is integrated in the MIC chip; Described first frequency multiplier and second frequency multiplier are integrated in two mmic chips respectively.
The utlity model has good technical indicator, debugging is convenient; Have advantages such as volume is little, integrated level is high, cost is low, operating frequency is high, phase noise is low, spurious performance is good, simple in structure, stepping is little; Have frequency translation speed fast, realize that two-way output etc. is outstanding; Be applied in the radio-frequency (RF) transceiver field can significantly increase transceiver stability, improve receiving sensitivity, improve the operating distance of communication system and increase user capacity.
Description of drawings
Fig. 1 is schematic diagram of the present utility model (arrow is the signal trend).
Fig. 2 is the utility model box body internal radio frequency part-structure diagrammatic top view.
Embodiment
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
The utility model comprises the microwave circuit in shield shell and the shield shell, and microwave circuit comprises frequency synthesizer 1, first filter 2, first frequency multiplier 3, second filter 4, second frequency multiplier 5 and the 3rd filter 6 that connects successively;
Frequency synthesizer 1 comprises phase-locked loop circuit 101 and voltage controlled oscillator 103; The signal that outside standard-frequency signal and voltage controlled oscillator 103 rear ends feedback are come is after discriminating differs in the phase discriminator of phase-locked loop circuit 101, by the control voltage signal of phase discriminator output voltage controlled oscillator 103.
Be connected with loop filter 102 between phase discriminator and the voltage controlled oscillator 103.
The utility model also comprises power splitter 7, and power splitter 7 is connected the 3rd filter 6 rear ends.
Second filter 4 is a microstrip bandpass filter.
The 3rd filter 6 is the cavity interdigital filter.
Frequency synthesizer 1 is integrated in the MIC chip; Described first frequency multiplier 3 and second frequency multiplier 5 are integrated in two mmic chips respectively.
In the present embodiment, second filter 4 is a microstrip bandpass filter; The 3rd filter 6 is the cavity interdigital filter, is the modified model interdigital filter, and volume is little, differential loss is little, inhibition is good.
In this example, signal source is selected the HMC820/821 family chip group of up-to-date hittite company for use, and this chipset is that the ultra-low noise of integrated voltage controlled oscillator 103 is combined chip frequently; In order to improve performance, frequency multiplication partly adopts mmic chip XX1002BD and HMC561, and the circuit of this design is fairly simple, does not need too much to consider the problem of MMIC and microstrip line coupling aspect, is easy to debugging; In order to improve spuious characteristic, the spy has adopted little band and cavity interdigital filter respectively the signal of different frequency range to be carried out filtering; In order to realize FREQUENCY CONTROL, select for use the control chip of function admirable to realize control.
As shown in Figure 2, K wave band ultralow temperature low noise amplifier mainly by integrated frequency combine chip MIC and external circuit 8, for the first time frequency multiplication mmic chip and individual layer electric capacity 9, coupling microstrip filter and novel medium material 10, frequency multiplication mmic chip and individual layer electric capacity 11, cavity interdigital filter 13 microstrip power dividers and novel medium material 12 etc. are formed for the second time.Whole low phase noise signal source has the ultralow C-band of making an uproar mutually to combine into twice filtering of twice frequency multiplication frequently to form through the merit branch at last, and wherein mmic chip adopts sintering process that it is assemblied on the substrate of kovar alloy material, again with the assembling of shielding box body.
In concrete the application, we use in transmitting-receiving radio communication machine the inside.
Prove that by experiment the utility model can reach following technical indicator:
1) working temperature :-40 ℃～+ 55 ℃
2) storage temperature :-55 ℃～+ 70 ℃
3) power output: 〉=10dBm
4) output frequency: 18-19GHz
5) spuious :≤-60dBc
6) phase noise :≤-80dBc/Hz1KHz
7)≤-90dBc/Hz10KHz
8)≤-95dBc/Hz100KHz
9)≤-105dBc/Hz1MKHz
10) interface shape: SMA
11) supply power voltage :+5V.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1.K wave band low phase noise signal source, comprise the microwave circuit in shield shell and the shield shell, it is characterized in that described microwave circuit comprises frequency synthesizer (1), first filter (2), first frequency multiplier (3), second filter (4), second frequency multiplier (5) and the 3rd filter (6) that connects successively;
Described frequency synthesizer (1) comprises phase-locked loop circuit (101) and voltage controlled oscillator (103); The signal that outside standard-frequency signal and voltage controlled oscillator (103) rear end feedback are come is after discriminating differs in the phase discriminator of phase-locked loop circuit (101), by the control voltage signal of phase discriminator output voltage controlled oscillator (103).
2. K wave band low phase noise signal source according to claim 1 is characterized in that being connected with between described phase discriminator and the voltage controlled oscillator (103) loop filter (102).
3. K wave band low phase noise signal source according to claim 1 and 2 is characterized in that also comprising power splitter (7), and power splitter (7) is connected described the 3rd filter (6) rear end.
4. K wave band low phase noise signal source according to claim 3 is characterized in that described second filter (4) is a microstrip bandpass filter.
5. K wave band low phase noise signal source according to claim 3 is characterized in that described the 3rd filter (6) is the cavity interdigital filter.
6. K wave band low phase noise signal source according to claim 1 is characterized in that described frequency synthesizer (1) is integrated in the MIC chip; Described first frequency multiplier (3) and second frequency multiplier (5) are integrated in two mmic chips respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200659415U CN202050403U (en) | 2011-03-14 | 2011-03-14 | K-band low-phase noise signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200659415U CN202050403U (en) | 2011-03-14 | 2011-03-14 | K-band low-phase noise signal source |
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| Publication Number | Publication Date |
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| CN202050403U true CN202050403U (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200659415U Expired - Lifetime CN202050403U (en) | 2011-03-14 | 2011-03-14 | K-band low-phase noise signal source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361388A (en) * | 2018-11-14 | 2019-02-19 | 成都嘉纳海威科技有限责任公司 | A kind of miniaturization high-air-tightness frequency source and its packaging method |
| CN112018480A (en) * | 2020-08-26 | 2020-12-01 | 中电科仪器仪表有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
| WO2023138167A1 (en) * | 2022-01-21 | 2023-07-27 | 深圳麦时科技有限公司 | Aerosol generating apparatus, control method, control apparatus, and readable storage medium |
-
2011
- 2011-03-14 CN CN2011200659415U patent/CN202050403U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109361388A (en) * | 2018-11-14 | 2019-02-19 | 成都嘉纳海威科技有限责任公司 | A kind of miniaturization high-air-tightness frequency source and its packaging method |
| CN109361388B (en) * | 2018-11-14 | 2023-09-01 | 成都嘉纳海威科技有限责任公司 | Miniaturized high-air-tightness frequency source and packaging method thereof |
| CN112018480A (en) * | 2020-08-26 | 2020-12-01 | 中电科仪器仪表有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
| CN112018480B (en) * | 2020-08-26 | 2022-03-11 | 中电科思仪科技股份有限公司 | Integrated solid-state signal external spread spectrum device and solid-state signal generator |
| WO2023138167A1 (en) * | 2022-01-21 | 2023-07-27 | 深圳麦时科技有限公司 | Aerosol generating apparatus, control method, control apparatus, and readable storage medium |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111123 |
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| CX01 | Expiry of patent term |