CN203522650U - Miniaturized frequency synthesizer - Google Patents
Miniaturized frequency synthesizer Download PDFInfo
- Publication number
- CN203522650U CN203522650U CN201320668906.1U CN201320668906U CN203522650U CN 203522650 U CN203522650 U CN 203522650U CN 201320668906 U CN201320668906 U CN 201320668906U CN 203522650 U CN203522650 U CN 203522650U
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- Prior art keywords
- frequency
- frequency synthesizer
- filter
- synthesizer
- switch filtering
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- 238000001914 filtration Methods 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 10
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The utility model discloses a miniaturized frequency synthesizer. The miniaturized frequency synthesizer comprises a constant temperature crystal oscillator, a directional coupler, a frequency multiplication device, a frequency divider, a frequency mixer, a digital frequency synthesizer, an amplifier, one or more filters, and one or more switch filtering assemblies, wherein the constant temperature crystal oscillator is respectively connected with the frequency multiplication device and a harmonic wave generator through the directional coupler; the harmonic wave generator is connected with the frequency mixer successively through the switch filtering assembly a, the frequency divider and the filter a; the frequency multiplication device is connected with the frequency mixer successively through the filter b, the digital frequency synthesizer and the filter c; and the output end of the frequency mixer is connected with the amplifier through the switch filtering assembly b. The miniaturized frequency synthesizer has the advantages of satisfied requirements of such aspects as frequency agility, high resolution, low stray, low phase noise and the like, simplified circuit structure and space layout, reduced size, decreased production cost and use cost, easy integration and the like.
Description
Technical field
The utility model relates to a kind of miniature frequency synthesizer.
Background technology
Frequency synthesizer is to use high-precision crystal oscillator as benchmark, by synthetic technology, can produce a series of high definition frequency sources with certain frequency interval.Existing frequency synthesizer mostly is single direct modeling composite structure, not only circuit is complicated, volume is large, cost is relatively high, cannot with the integrated use of other element, and cannot meet the frequency agility, high-resolution of present frequency synthesizer, the requirement of the low aspect such as make an uproar mutually.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of miniature frequency synthesizer is provided, solved existing frequency synthesizer not only circuit be complicated, volume is large, cost is relatively high, cannot with the integrated use of other element, and cannot meet the frequency agility, high-resolution of present frequency synthesizer, the requirement of the low aspect such as make an uproar mutually.
The purpose of this utility model is achieved through the following technical solutions: a kind of miniature frequency synthesizer, it comprises constant-temperature crystal oscillator, directional coupler, frequency multiplier, frequency divider, frequency mixer, digital frequency synthesizer, amplifier, and one or more filters, one or more switch filtering assemblies, constant-temperature crystal oscillator by directional coupler respectively with frequency multiplier, harmonic oscillator connects, harmonic oscillator is successively by switch filtering assembly a, frequency divider, filter a is connected with frequency mixer, frequency multiplier is successively by filter b, digital frequency synthesizer, filter c is connected with frequency mixer, the output of frequency mixer is connected with amplifier by switch filtering assembly b.
The beneficial effects of the utility model are: the utility model provides a kind of miniature frequency synthesizer, there is the requirement that has met frequency agility, high-resolution, the low spuious and low aspect such as make an uproar mutually, circuit structure and space layout have been simplified, circuit structure is flexible, be easy to expansion, reduce volume, reduced production cost and use cost, be easy to the advantages such as integrated.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of miniature frequency synthesizer, it comprises constant-temperature crystal oscillator, directional coupler, frequency multiplier, frequency divider, frequency mixer, digital frequency synthesizer, amplifier, and one or more filters, one or more switch filtering assemblies, constant-temperature crystal oscillator by directional coupler respectively with frequency multiplier, harmonic oscillator connects, harmonic oscillator is successively by switch filtering assembly a, frequency divider, filter a is connected with frequency mixer, frequency multiplier is successively by filter b, digital frequency synthesizer, filter c is connected with frequency mixer, the output of frequency mixer is connected with amplifier by switch filtering assembly b, described digital frequency synthesizer is Direct Digital Frequency Synthesizers.
The course of work of the present utility model:
(1) after processing, constant-temperature crystal oscillator, directional coupler, frequency multiplier and filter b obtain reference signal FC;
(2) reference signal FC obtains FDDS signal after digital frequency synthesizer is processed;
(3) by harmonic oscillator, switch filtering assembly a, frequency divider, filter a, filter c, form frequency marking generator, after frequency marking generator is processed, generate frequency standard signal MFC/2;
(4) FDDS signal and frequency standard signal MFC/2 obtain terminal output signal through frequency mixer, switch filtering assembly b, amplifier after processing, and terminal output signal is the mixed signal of FDDS and frequency standard signal MFC/2.
Claims (1)
1. a miniature frequency synthesizer, it is characterized in that: it comprises constant-temperature crystal oscillator, directional coupler, frequency multiplier, frequency divider, frequency mixer, digital frequency synthesizer, amplifier, and one or more filters, one or more switch filtering assemblies, constant-temperature crystal oscillator by directional coupler respectively with frequency multiplier, harmonic oscillator connects, harmonic oscillator is successively by switch filtering assembly a, frequency divider, filter a is connected with frequency mixer, frequency multiplier is successively by filter b, digital frequency synthesizer, filter c is connected with frequency mixer, the output of frequency mixer is connected with amplifier by switch filtering assembly b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668906.1U CN203522650U (en) | 2013-10-29 | 2013-10-29 | Miniaturized frequency synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320668906.1U CN203522650U (en) | 2013-10-29 | 2013-10-29 | Miniaturized frequency synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203522650U true CN203522650U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320668906.1U Expired - Lifetime CN203522650U (en) | 2013-10-29 | 2013-10-29 | Miniaturized frequency synthesizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203522650U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634483A (en) * | 2015-12-23 | 2016-06-01 | 北京无线电计量测试研究所 | Millimeter wave frequency source for mercury ion microwave frequency standard |
| CN109787622A (en) * | 2018-12-20 | 2019-05-21 | 成都世源频控技术股份有限公司 | A kind of thin stepping frequency agility apparatus for frequency synthesizing and method of high spurious reduction |
| CN110868210A (en) * | 2019-11-26 | 2020-03-06 | 珠海微度芯创科技有限责任公司 | Frequency synthesis method and frequency synthesis device |
| CN112422124A (en) * | 2021-01-21 | 2021-02-26 | 成都市克莱微波科技有限公司 | Broadband agile frequency source and working method thereof |
-
2013
- 2013-10-29 CN CN201320668906.1U patent/CN203522650U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634483A (en) * | 2015-12-23 | 2016-06-01 | 北京无线电计量测试研究所 | Millimeter wave frequency source for mercury ion microwave frequency standard |
| CN109787622A (en) * | 2018-12-20 | 2019-05-21 | 成都世源频控技术股份有限公司 | A kind of thin stepping frequency agility apparatus for frequency synthesizing and method of high spurious reduction |
| CN109787622B (en) * | 2018-12-20 | 2023-02-24 | 成都世源频控技术股份有限公司 | High-spurious suppression fine-stepping frequency agility synthesis device and method |
| CN110868210A (en) * | 2019-11-26 | 2020-03-06 | 珠海微度芯创科技有限责任公司 | Frequency synthesis method and frequency synthesis device |
| CN110868210B (en) * | 2019-11-26 | 2023-08-18 | 珠海微度芯创科技有限责任公司 | Frequency synthesis method and frequency synthesis device |
| CN112422124A (en) * | 2021-01-21 | 2021-02-26 | 成都市克莱微波科技有限公司 | Broadband agile frequency source and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |