A Broadband Agile Low Phase Noise Frequency Synthesis Generator

A technology with low phase noise and frequency synthesis, applied in automatic control of power, electrical components, etc., can solve the problems that DDS frequency hopping speed cannot be reflected, fast hopping cannot be realized, and spurious suppression is not enough, and achieve low phase Noise, increased locking speed, avoiding wrong locking effects
CN106571817BActive Publication Date: 2019-11-05UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2019-11-05

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Abstract

The invention belongs to the technology of frequency synthesis generators, and specifically provides a frequency synthesis generator with broadband agility and low phase noise, including: a high-stable crystal oscillator, a down-conversion mixing phase-locked loop module, a preset traction module and a control module, wherein the down-conversion mixing The frequency phase-locked loop module adopts the structure of coarse frequency conversion and fine frequency conversion twice, so as to achieve higher frequency output and low phase noise in a small volume; at the same time, the pre-set traction module completes the traction and coarse tuning of the VCO, thereby Wrong locking is avoided; moreover, the locking speed of the phase-locked loop is obviously improved, and agility is realized. To sum up, the object of the present invention is to provide a frequency synthesis generator with wideband agility and low phase noise, which can realize low phase noise, small step, wide bandwidth and agility.
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Description

technical field

[0001] The invention belongs to the technology of frequency synthesis generators, in particular to frequency synthesis generators with wide-band agility and low phase noise. Background technique

[0002] Radar technology is developing rapidly, and as one of its core technologies, the requirements for frequency synthesis generators are getting higher and higher. With the gradual increase of frequency, low phase noise and spurs have become more and more difficult to achieve, and the structure of the traditional built-in reference crystal oscillator and single phase-locked loop has gradually failed to meet the technical requirements. Due to the characteristics of radar technology itself, in addition to the requirements for low phase noise and low spurs, frequency synthesis generators are often required to achieve wide bandwidth, small steps, high stability, and fast transitions.

[0003] In order to achieve small steps and low spurs, an effective way is to use ...

Claims

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