CN202435384U - Fast phase-locked synthesizer based on voltage presetting technology - Google Patents
Fast phase-locked synthesizer based on voltage presetting technology Download PDFInfo
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- CN202435384U CN202435384U CN2012200137867U CN201220013786U CN202435384U CN 202435384 U CN202435384 U CN 202435384U CN 2012200137867 U CN2012200137867 U CN 2012200137867U CN 201220013786 U CN201220013786 U CN 201220013786U CN 202435384 U CN202435384 U CN 202435384U
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- controlled oscillator
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Abstract
The utility model discloses a fast phase-locked synthesizer based on voltage presetting technology. The fast phase-locked synthesizer comprises a reference source, a frequency and phase detector, a loop filter, a voltage-controlled oscillator, a loop frequency divider, a voltage synthesizer, a frequency controller and a D/A (direct current/alternating current) converter. The loop frequency divider is preset by the fast phase-locked synthesizer through the frequency controller to obtain an expected frequency. Controlled voltage of the D/A converter is used to precontrol the controlled voltage of the voltage-controlled oscillator so as to reduce frequency difference between the frequency of the voltage-controlled oscillator and the expected frequency and realize loop fast locking. The fast phase-locked synthesizer is simple in circuit, stable in phase, low in noise and low in power consumption, and locking time of a lockset is reduced evidently.
Description
Technical field
The utility model relates to a kind of quick lock that presets technology based on voltage and is harmonious and grows up to be a useful person, this synthesizer in the frequency synthesizer field of systems such as radar, electronic reconnaissance, antagonism, wireless telecommunications and management by extensively employing.
Background technology
Lock be harmonious grow up to be a useful person, phase stabilization succinct because of circuit, noise is low, spectral purity is high, frequency translation is flexible, cost is low, advantage such as easy of integration, extensively employing in the frequency synthesizer field of radar, electronic reconnaissance and countermeasure system.Be harmonious grow up to be a useful person output voltage traction voltage controlled oscillator (VCO) frequency that relies on loop phase frequency detector (PD) fully and phase place and a reference source of lock of the prior art is synchronous; Because always and between the expected frequency there is certain frequency difference in the current frequency of VCO; And uncertain, receive the restriction of loop bandwidth simultaneously, so phase-locked loop exists the long frequency pulling time just to get into the phase locking state; Locking time is all longer, generally more than tens us even longer.
The utility model content
To the some shortcomings that exist in the above technology; The quick lock that presets technology based on voltage that the utility model provides is harmonious with growing up to be a useful person and presets loop divider through frequency controller; Obtain desired frequency; Utilize the control voltage of D/A converter that control voltage of voltage-controlled oscillator is controlled the frequency difference that reduces voltage controlled oscillator and expected frequency fast in advance simultaneously, realize quick lock in.
In order to reach the foregoing invention purpose; The technical scheme that the utility model adopts provides a kind of quick lock that presets technology based on voltage and is harmonious and grows up to be a useful person; Comprise a reference source, phase frequency detector, loop filter, voltage controlled oscillator, loop divider; The input of said phase frequency detector is connected with the output of a reference source and loop divider, and the output of phase frequency detector is connected with the input of loop filter, and the input of loop divider is connected with the output of voltage controlled oscillator; It is characterized in that: also comprise voltage synthesizer, frequency controller and D/A converter, the input of voltage synthesizer is connected with the output of loop filter with the D/A converter, and the output of voltage synthesizer is connected with the input of voltage controlled oscillator; The output of said frequency controller is connected with the input of D/A converter and loop divider.
Wherein, A reference source is that phase frequency detector provides frequency and phase reference, and phase frequency detector carries out the frequency discrimination phase demodulation to a reference source and loop divider signal, and its Beat Signal carries out filtering through loop filter to signal; Synthesize at the voltage synthesizer then and from the D/A transducer signal; At last the frequency and the phase place of voltage controlled oscillator are controlled, loop divider is carried out frequency division N time to the frequency of voltage controlled oscillator, when guaranteeing loop-locking; The frequency of voltage controlled oscillator equals N times of a reference source, Phase synchronization simultaneously.
In sum, should be harmonious and grow up to be a useful person, preset loop divider through frequency controller based on the quick lock that voltage presets technology; Obtain desired frequency; Utilize the control voltage of D/A converter that control voltage of voltage-controlled oscillator is controlled in advance simultaneously, reduce the frequency difference of voltage controlled oscillator and expected frequency fast, realize quick lock in; Greatly shortened locking time, advantages such as circuit is succinct, phase stabilization, noise is low, low in energy consumption, manufacturing cost is low that it also has simultaneously.
Description of drawings
The theory diagram that Fig. 1 is harmonious and grows up to be a useful person for the quick lock that presets technology based on voltage.
Embodiment
Describe in detail below in conjunction with the embodiment of accompanying drawing the utility model:
As shown in the figure; Should be harmonious with growing up to be a useful person and comprise a reference source, phase frequency detector, loop filter, voltage controlled oscillator, loop divider based on the quick lock that voltage presets technology; The input of said phase frequency detector is connected with the output of a reference source and loop divider; The output of phase frequency detector is connected with the input of loop filter, and the input of loop divider is connected with the output of voltage controlled oscillator; It is characterized in that: also comprise voltage synthesizer, frequency controller and D/A converter; The input of said voltage synthesizer is connected with the output of loop filter with the D/A converter, and the output of voltage synthesizer is connected with the input of voltage controlled oscillator; The output of said frequency controller is connected with the input of D/A converter and loop divider.
Wherein, a reference source is that phase frequency detector provides frequency and phase reference, and phase frequency detector carries out the frequency discrimination phase demodulation to a reference source and loop divider signal, and its Beat Signal carries out filtering through loop filter to signal.
Workflow of the present invention is divided two parts, 1, the prefabricated configuration state of circulation circuit voltage-controlled oscillator voltage to frequency, is the open loop dynamic process that is:; 2, loop control adjustment state is loop closed-loop control state.Do concrete description in the face of be harmonious grow up to be a useful person two parts of workflow of fast digital lock down:
1, open loop dynamic process: system power-up, loop are out-of-lock condition, and this moment, frequency controller was according to the expectation of system to frequency; Loop divider is preset; According to voltage controlled oscillator corresponding voltage value on this frequency, utilize register to adopt the truth table mode to make D/A converter output corresponding voltage value, the output signal of D/A converter synthesizes with the Beat Signal that carries out filtering through loop filter; At last the frequency and the phase place of voltage controlled oscillator are controlled, loop is set and is accomplished.
2, loop control adjustment state: phase frequency detector is dynamically adjusted loop with differing according to the frequency difference of a reference source and feedback frequency; Loop divider is carried out frequency division N time to the frequency of voltage controlled oscillator; When guaranteeing loop-locking; The frequency of voltage controlled oscillator equals N times of a reference source, Phase synchronization simultaneously.
The utility model is not limited to above-mentioned preferred forms; The digital phase-locking with design similar or close with the utility model that anyone draws under the enlightenment of the mentality of designing of the utility model is harmonious and grows up to be a useful person, and all drops in the protection range of the utility model.
Claims (1)
1. a quick lock that presets technology based on voltage is harmonious and grows up to be a useful person; Comprise a reference source, phase frequency detector, loop filter, voltage controlled oscillator, loop divider; The input of said phase frequency detector is connected with the output of a reference source and loop divider; The output of phase frequency detector is connected with the input of loop filter, and the input of loop divider is connected with the output of voltage controlled oscillator; It is characterized in that: also comprise voltage synthesizer, frequency controller and D/A converter; The input of said voltage synthesizer is connected with the output of loop filter with the D/A converter, and the output of voltage synthesizer is connected with the input of voltage controlled oscillator; The output of said frequency controller is connected with the input of D/A converter and loop divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137867U CN202435384U (en) | 2012-01-13 | 2012-01-13 | Fast phase-locked synthesizer based on voltage presetting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200137867U CN202435384U (en) | 2012-01-13 | 2012-01-13 | Fast phase-locked synthesizer based on voltage presetting technology |
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| Publication Number | Publication Date |
|---|---|
| CN202435384U true CN202435384U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012200137867U Expired - Lifetime CN202435384U (en) | 2012-01-13 | 2012-01-13 | Fast phase-locked synthesizer based on voltage presetting technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811192A (en) * | 2015-05-15 | 2015-07-29 | 成都振芯科技股份有限公司 | System and method of assisting frequency source in locking optimum control voltage point |
| CN107508596A (en) * | 2017-09-04 | 2017-12-22 | 中国电子科技集团公司第四十研究所 | A kind of polycyclic phase lock circuitry and frequency preset method with aided capture device |
| CN108512548A (en) * | 2018-04-04 | 2018-09-07 | 中国电子科技集团公司第三十六研究所 | A kind of broadband frequency of phase locking source device |
-
2012
- 2012-01-13 CN CN2012200137867U patent/CN202435384U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104811192A (en) * | 2015-05-15 | 2015-07-29 | 成都振芯科技股份有限公司 | System and method of assisting frequency source in locking optimum control voltage point |
| CN104811192B (en) * | 2015-05-15 | 2018-01-12 | 成都振芯科技股份有限公司 | A kind of system and method for helping frequency source to be locked to Optimal Control electrical voltage point |
| CN107508596A (en) * | 2017-09-04 | 2017-12-22 | 中国电子科技集团公司第四十研究所 | A kind of polycyclic phase lock circuitry and frequency preset method with aided capture device |
| CN107508596B (en) * | 2017-09-04 | 2020-06-23 | 中国电子科技集团公司第四十一研究所 | Multi-loop phase-locked circuit with auxiliary capturing device and frequency presetting method |
| CN108512548A (en) * | 2018-04-04 | 2018-09-07 | 中国电子科技集团公司第三十六研究所 | A kind of broadband frequency of phase locking source device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120912 |
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| CX01 | Expiry of patent term |