CN202535340U - Micro phase lock frequency synthesizer - Google Patents
Micro phase lock frequency synthesizer Download PDFInfo
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- CN202535340U CN202535340U CN 201220186058 CN201220186058U CN202535340U CN 202535340 U CN202535340 U CN 202535340U CN 201220186058 CN201220186058 CN 201220186058 CN 201220186058 U CN201220186058 U CN 201220186058U CN 202535340 U CN202535340 U CN 202535340U
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- frequency
- phase
- frequency synthesizer
- phase lock
- oscillator
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Abstract
The utility model discloses a micro phase lock frequency synthesizer. The micro phase lock frequency synthesizer comprises a constant temperature crystal oscillator, a phase detector, a loop filter, a voltage control oscillator and one or multiple frequency dividers, wherein the constant temperature crystal oscillator, the phase detector, the loop filter and the voltage control oscillator are successively connected, an output terminal of the voltage control oscillator is connected with the phase detector through a frequency divider a, and a frequency divider b is connected in series between the constant temperature crystal oscillator and the phase detector. According to the micro phase lock frequency synthesizer, a phase loop has functions such as frequency stabilization, and the like; the micro phase lock frequency synthesizer can be used as a frequency summitor or subtractor, a frequency doubler, a frequency divider, and the like; a great quantity of discrete frequency signals with high stability and high precision can be generated by utilizing a block of crystal; and the micro phase lock frequency synthesizer has advantages of simple structure, small volume, easy integration, and the like.
Description
Technical field
The utility model relates to a kind of miniature frequency synthesizer of phase locking.
Background technology
Frequency synthesizer is as benchmark, through a series of high definition frequency sources with certain frequency interval of synthetic technology generation with the high-precision crystal oscillator.Along with the development of microwave technology, also increasingly high to the requirement of frequency synthesizer, as to characteristic requirements such as frequency stabilizations; Existing frequency synthesizer can only be accomplished a kind of function of frequency synthesis, and in the frequency synthesis process, can only accomplish and add computing, if will realize similar multiplication and division, computing such as subtract; Then need establish miscellaneous equipment in addition, it is single to have the computing structure, complicated circuit; Volume is bigger, and cost is higher relatively, can't with shortcomings such as the integrated use of other element.
The utility model content
The purpose of the utility model promptly is to overcome the deficiency of prior art; A kind of miniature frequency synthesizer of phase locking is provided; Phase-locked loop has effects such as frequency stabilization; Can accomplish the adding of signal, subtract, the multiplication and division computing, can be used as uses such as frequency addition (subtracting) device, frequency multiplier, frequency divider, can produce the signal of a large amount of discrete frequencies of high stability and pinpoint accuracy with a crystal.
The purpose of the utility model realizes through following technical scheme: a kind of miniature frequency synthesizer of phase locking; It comprises constant-temperature crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator and one or more frequency divider; Constant-temperature crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator connect in order; The output of voltage controlled oscillator is connected with phase discriminator through frequency divider a, is connected in series a frequency divider b between constant-temperature crystal oscillator and the phase discriminator.
The beneficial effect of the utility model is: the utility model provides a kind of miniature frequency synthesizer of phase locking; Phase-locked loop has effects such as frequency stabilization, have can accomplish the adding of signal, subtract, the multiplication and division computing, can be used as uses such as frequency addition (subtracting) device, frequency multiplier, frequency divider; Can produce the signal of a large amount of discrete frequencies of high stability and pinpoint accuracy with a crystal; Simple in structure, volume is less, is easy to advantages such as integrated.
Description of drawings
Fig. 1 is the structured flowchart of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further description, but the protection range of the utility model is not limited to the following stated.
As shown in Figure 1; A kind of miniature frequency synthesizer of phase locking; It comprises constant-temperature crystal oscillator, phase discriminator (Phase Detector), loop filter (Loop Filter), voltage controlled oscillator (Voltage Control Oscillator) and one or more frequency divider (Frequency Divider); Constant-temperature crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator connect in order; The output of voltage controlled oscillator is connected with phase discriminator through frequency divider a, is connected in series a frequency divider b between constant-temperature crystal oscillator and the phase discriminator.
Phase discriminator compares with the phase place of voltage controlled oscillator output signal Vo (t) input signal Vi (t), produces error voltage Vd (t); Filter is eliminated radio-frequency component and the noise of error voltage Vd (t), and can improve the noiseproof feature of phase-locked loop; The frequency of oscillation of voltage controlled oscillator will be controlled by the loop filter output voltage.When the phase-locked loop operate as normal, output signal frequency equates with the frequency of input signal, i.e. Fo/N=Fr/R.
When the loop no signal was imported, voltage controlled oscillator was operated in " free oscillation " state, and its frequency of oscillation is f1; If loop obtains input signal; Phase discriminator will compare the phase place of input signal and voltage controlled oscillator output signal, produces error voltage, and this error voltage is through behind the loop filter; The frequency and the phase place of control voltage controlled oscillator reduce the frequency of two signals and phase difference.If the frequency f of input signal 2 and f1 ten minutes are close; The feedback characteristics of phase-locked loop can make voltage controlled oscillator output signal and input signal synchronously perhaps " locking " so; This moment, the output signal frequency of voltage controlled oscillator equaled frequency input signal, and phase difference is a constant.In case go into after the lock, because loop has output signal frequency " tracking " frequency input signal that automatic control action will make voltage controlled oscillator.
Claims (1)
1. miniature frequency synthesizer of phase locking; It is characterized in that: it comprises constant-temperature crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator and one or more frequency divider; Constant-temperature crystal oscillator, phase discriminator, loop filter, voltage controlled oscillator connect in order; The output of voltage controlled oscillator is connected with phase discriminator through frequency divider a, is connected in series a frequency divider b between constant-temperature crystal oscillator and the phase discriminator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186058 CN202535340U (en) | 2012-04-28 | 2012-04-28 | Micro phase lock frequency synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220186058 CN202535340U (en) | 2012-04-28 | 2012-04-28 | Micro phase lock frequency synthesizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202535340U true CN202535340U (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220186058 Expired - Fee Related CN202535340U (en) | 2012-04-28 | 2012-04-28 | Micro phase lock frequency synthesizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN202535340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638262A (en) * | 2012-04-28 | 2012-08-15 | 成都泰格微波技术股份有限公司 | Miniature phase-locked frequency synthesizer |
| CN110504957A (en) * | 2019-07-25 | 2019-11-26 | 中国电子科技集团公司第二十九研究所 | It is a kind of minimize frequency of phase locking source circuit Dynamic Phase noise compensation method and circuit |
-
2012
- 2012-04-28 CN CN 201220186058 patent/CN202535340U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102638262A (en) * | 2012-04-28 | 2012-08-15 | 成都泰格微波技术股份有限公司 | Miniature phase-locked frequency synthesizer |
| CN110504957A (en) * | 2019-07-25 | 2019-11-26 | 中国电子科技集团公司第二十九研究所 | It is a kind of minimize frequency of phase locking source circuit Dynamic Phase noise compensation method and circuit |
| CN110504957B (en) * | 2019-07-25 | 2023-02-03 | 中国电子科技集团公司第二十九研究所 | Dynamic phase noise compensation method and circuit of miniaturized phase-locked frequency source circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Miniature phase-locked frequency synthesizer Effective date of registration: 20130910 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20150707 Granted publication date: 20121114 Pledgee: Bank of Chengdu science and technology branch of Limited by Share Ltd Pledgor: Chengdu Tiger Microwave Technology Co., Ltd. Registration number: 2013510000003 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |