CN201947248U - S wave band agile frequency synthesizer - Google Patents
S wave band agile frequency synthesizer Download PDFInfo
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- CN201947248U CN201947248U CN2011200364226U CN201120036422U CN201947248U CN 201947248 U CN201947248 U CN 201947248U CN 2011200364226 U CN2011200364226 U CN 2011200364226U CN 201120036422 U CN201120036422 U CN 201120036422U CN 201947248 U CN201947248 U CN 201947248U
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Abstract
The utility model discloses an S wave band agile frequency synthesizer, which mainly comprises a frequency mixer, a direct digital frequency synthesizer and a frequency divider, wherein the direct digital frequency synthesizer and the frequency divider are respectively connected with the frequency mixer. Compared with the prior art, the S wave band agile frequency synthesizer has the following advantages of beneficial effects: firstly, as the design of a DDS (digital display scope) of the direct digital frequency synthesizer is adopted, the S wave band agile frequency synthesizer is more flexible in circuit design and structural form, and is easy to expand; and secondly, the agile frequency and high resolution index can be realized at the same time, the circuit structure and spatial distribution are simplified, precious space resources are saved, and therefore the application is more simple and convenient, and the cost is reduced to the minimum extent.
Description
Technical field
The utility model relates to a kind of frequency synthesizer, specifically is meant a kind of S-band frequency agility rate synthesizer.
Background technology
Along with the development of microwave electron technology, especially Radar Technology makes rapid progress.Index request to frequency synthesizer is more and more higher, and frequency agility, high-resolution, low making an uproar have mutually become the trend of development.Yet adopt the product of single direct modeling synthesis mode design owing to circuit complexity, equipment heaviness, with high costsly can't adapt to the requirement of present stage for frequency synthesizer.The maturation of synthetic (Direct Digital Frequency Synthesizers) technology of Direct Digital provides advantage for realizing frequency agility, high-resolution, small size frequency synthesizer.Offshore company has released corresponding product very early, in order to adapt to this demand for development, except grasping new technology, new unit, the more important thing is the characteristics in conjunction with different synthesis modes, learns from other's strong points to offset one's weaknesses it is dissolved in the middle of the design.By contrasting the pluses and minuses of existing synthesis mode, analyze in conjunction with specific product, and provide the universal law that the design of S-band frequency synthesizer realizes.
The utility model content
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provides a kind of and can take into account frequency agility, high-resolution, low spuious and low index and stable performance such as make an uproar mutually, S-band frequency agility rate synthesizer simple in structure, with low cost simultaneously.
The purpose of this utility model is achieved through the following technical solutions: a kind of S-band frequency agility rate synthesizer, mainly form by frequency mixer and the Direct Digital Frequency Synthesizers that is connected with frequency mixer respectively and frequency divider.
Also be provided with filter between described frequency mixer and the Direct Digital Frequency Synthesizers, also be provided with low pass filter between frequency mixer and the frequency divider.Direct Digital Frequency Synthesizers and filter constitute small step and advance the frequency agility signal generator, and this part is to produce the key that the frequency agility signal is advanced in small step.
Described Direct Digital Frequency Synthesizers and frequency divider are connected with directional coupler simultaneously.
Described directional coupler also is connected with constant-temperature crystal oscillator.Described frequency divider and directional coupler also are provided with harmonic oscillator, and described harmonic oscillator is connected with frequency divider by the switch filtering assembly.Described Direct Digital Frequency Synthesizers and directional coupler directly also are provided with ten frequency multipliers, and described ten frequency multipliers are connected with Direct Digital Frequency Synthesizers by filter.Constant-temperature crystal oscillator, directional coupler, ten frequency multipliers and filter constitute the reference signal of Direct Digital Frequency Synthesizers, and this part is mainly the reference signal that Direct Digital Frequency Synthesizers provides operate as normal.
Described frequency mixer also is connected with amplifier by the switch filtering assembly.
Described frequency divider is a two-divider.
Produce small step by the control Direct Digital Frequency Synthesizers and advance the frequency agility signal, thereby the frequency marking that produces through harmonic oscillator is then carried out the output of mixing realization S-band frequency.
Wherein Direct Digital Frequency Synthesizers is used for producing small step and advances the frequency agility signal, requires the Direct Digital Frequency Synthesizers output bandwidth must be more than or equal to the frequency of oscillation of constant-temperature crystal oscillator.The harmonic oscillator output frequency is spaced apart the frequency of oscillation of constant-temperature crystal oscillator, selects output by the switch filtering assembly again.After the frequency agility signal is advanced in the small step that mixing produces Direct Digital Frequency Synthesizers moves to required frequency range.
Harmonic oscillator, switch filtering assembly, two-divider, low pass filter constitute the frequency marking generator, and this part is the frequency agility signal to be advanced in the small step that Direct Digital Frequency Synthesizers produces move to required frequency range local oscillation signal is provided.
Switch filtering assembly and amplifier constitute the frequency expansion part, finish the expansion of frequency.
The utility model is compared than prior art, has the following advantages and beneficial effect.
(1) because the utility model adopts Direct Digital Frequency Synthesizers DDS design, all more flexible on circuit design and version, be easy to expansion.
(2) the utility model not only can be realized frequency agility, high resolution proxy simultaneously, and has simplified circuit structure and space layout, has saved valuable space resources, makes that application is more simple and convenient, and cost has also dropped to minimum.
Description of drawings
Fig. 1 is the framework schematic diagram of the utility model embodiment one.
Fig. 2 is the framework schematic diagram of the utility model embodiment two.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but execution mode of the present utility model is not limited thereto.
Embodiment one
As shown in Figure 1, a kind of S-band frequency agility rate synthesizer mainly is made up of frequency mixer and the Direct Digital Frequency Synthesizers that is connected with frequency mixer respectively and frequency divider.
The FC signal that is received by Direct Digital Frequency Synthesizers forms the FDDS signal through the processing of Direct Digital Frequency Synthesizers, handle through frequency divider by the FC signal that frequency divider receives, obtain the FC/x signal, FDDS signal and FC/X signal, enter into frequency mixer simultaneously, through Frequency mixing processing, export the mixed signal that the FOUT signal is FC/x and FDDS signal at last.
Embodiment two
As shown in Figure 2, a kind of S-band frequency agility rate synthesizer mainly is made up of frequency mixer and the Direct Digital Frequency Synthesizers that is connected with frequency mixer respectively and two-divider.Direct Digital Frequency Synthesizers also is connected with ten frequency multipliers.Ten frequency multipliers are connected with constant-temperature crystal oscillator by directional coupler.Frequency divider is connected with harmonic oscillator.Harmonic oscillator is connected with constant-temperature crystal oscillator by directional coupler.
Also be connected with filter between Direct Digital Frequency Synthesizers and ten frequency multipliers.Also be connected the switch filtering assembly between frequency divider and the harmonic oscillator.Be connected with low pass filter between frequency mixer and the frequency divider, also be connected with filter between frequency mixer and the Direct Digital Frequency Synthesizers.Frequency mixer is connected with amplifier by the switch filtering assembly.
Constant-temperature crystal oscillator, directional coupler, ten frequency multipliers and filter constitute reference signal FC, and the processing of process Direct Digital Frequency Synthesizers obtains the FDDS signal; Harmonic oscillator, switch filtering assembly, two-divider, low pass filter constitute the frequency marking generator and produce frequency standard signal MFC/2, and the processing of process frequency mixer and switch filtering assembly and amplifier obtains the mixed signal that the FOUT signal is FDDS and MFC/2.
Just can better implement the utility model as mentioned above.
Claims (8)
1. a S-band frequency agility rate synthesizer is characterized in that, mainly is made up of frequency mixer and the Direct Digital Frequency Synthesizers that is connected with frequency mixer respectively and frequency divider.
2. a kind of S-band frequency agility rate synthesizer according to claim 1 is characterized in that, also is provided with filter between described frequency mixer and the Direct Digital Frequency Synthesizers, also is provided with low pass filter between frequency mixer and the frequency divider.
3. a kind of S-band frequency agility rate synthesizer according to claim 1 is characterized in that described Direct Digital Frequency Synthesizers and frequency divider are connected with directional coupler simultaneously.
4. a kind of S-band frequency agility rate synthesizer according to claim 3 is characterized in that described directional coupler also is connected with constant-temperature crystal oscillator.
5. a kind of S-band frequency agility rate synthesizer according to claim 3 is characterized in that described frequency divider and directional coupler also are provided with harmonic oscillator, and described harmonic oscillator is connected with frequency divider by the switch filtering assembly.
6. a kind of S-band frequency agility rate synthesizer according to claim 3 is characterized in that also be provided with ten frequency multipliers between described Direct Digital Frequency Synthesizers and the directional coupler, described ten frequency multipliers are connected with Direct Digital Frequency Synthesizers by filter.
7. according to any described a kind of S-band frequency agility rate synthesizer among the claim 1-6, it is characterized in that described frequency mixer also is connected with amplifier by the switch filtering assembly.
8. according to any described a kind of S-band frequency agility rate synthesizer among the claim 1-6, it is characterized in that described frequency divider is a two-divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200364226U CN201947248U (en) | 2011-02-11 | 2011-02-11 | S wave band agile frequency synthesizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200364226U CN201947248U (en) | 2011-02-11 | 2011-02-11 | S wave band agile frequency synthesizer |
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| CN201947248U true CN201947248U (en) | 2011-08-24 |
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| CN2011200364226U Expired - Fee Related CN201947248U (en) | 2011-02-11 | 2011-02-11 | S wave band agile frequency synthesizer |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508214A (en) * | 2011-09-29 | 2012-06-20 | 北京振兴计量测试研究所 | Radar radiating source simulator |
| CN103532589A (en) * | 2013-10-11 | 2014-01-22 | 四川九洲电器集团有限责任公司 | Frequency agile signal generating system and method |
| CN105245225A (en) * | 2015-10-22 | 2016-01-13 | 中国电子科技集团公司第四十一研究所 | Circuit for converting low-frequency narrow-band synthesis source into high-frequency wide-band synthesis source |
| CN105334500A (en) * | 2015-11-23 | 2016-02-17 | 无锡市雷华科技有限公司 | S-band radar system frequency source |
| CN105429654A (en) * | 2015-12-21 | 2016-03-23 | 武汉大学 | Frequency synthesizer for S-band wave observation radar |
| 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 |
| CN107911111A (en) * | 2017-11-16 | 2018-04-13 | 北京遥感设备研究所 | A kind of S-band fast frequency hopping rate source based on phaselocked loop and matrix switch |
| 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 |
-
2011
- 2011-02-11 CN CN2011200364226U patent/CN201947248U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508214B (en) * | 2011-09-29 | 2014-07-09 | 北京振兴计量测试研究所 | Radar radiating source simulator |
| CN102508214A (en) * | 2011-09-29 | 2012-06-20 | 北京振兴计量测试研究所 | Radar radiating source simulator |
| CN103532589B (en) * | 2013-10-11 | 2016-04-13 | 四川九洲电器集团有限责任公司 | Frequency agility signal generation system and method |
| CN103532589A (en) * | 2013-10-11 | 2014-01-22 | 四川九洲电器集团有限责任公司 | Frequency agile signal generating system and method |
| CN105245225A (en) * | 2015-10-22 | 2016-01-13 | 中国电子科技集团公司第四十一研究所 | Circuit for converting low-frequency narrow-band synthesis source into high-frequency wide-band synthesis source |
| CN105245225B (en) * | 2015-10-22 | 2018-03-13 | 中国电子科技集团公司第四十一研究所 | Low-frequency range arrowband synthetic source is converted into the circuit of high-frequency-band broadband synthetic source |
| CN105334500A (en) * | 2015-11-23 | 2016-02-17 | 无锡市雷华科技有限公司 | S-band radar system frequency source |
| CN105429654A (en) * | 2015-12-21 | 2016-03-23 | 武汉大学 | Frequency synthesizer for S-band wave observation radar |
| CN105429654B (en) * | 2015-12-21 | 2018-04-20 | 武汉大学 | A kind of S-band wave observation radar frequency synthesizer |
| 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 |
| CN107911111A (en) * | 2017-11-16 | 2018-04-13 | 北京遥感设备研究所 | A kind of S-band fast frequency hopping rate source based on phaselocked loop and matrix switch |
| 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 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20130211 |