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Harmonic phase locking frequency source and phase locking method thereof

A frequency source, phase-locked technology, applied in the automatic control of power, electrical components, etc., to achieve the effect of low phase noise and good clutter suppression characteristics

Inactive Publication Date: 2011-04-06
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, the traditional phase-locked frequency source can no longer meet the requirements of use, and the harmonic phase-locked frequency source has the advantages of low phase noise, high clutter suppression, low cost, etc., in most cases completely Can replace the traditional phase-locked frequency source

Method used

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  • Harmonic phase locking frequency source and phase locking method thereof
  • Harmonic phase locking frequency source and phase locking method thereof
  • Harmonic phase locking frequency source and phase locking method thereof

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Embodiment Construction

[0015] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] The harmonic phase-locked frequency source is mainly composed of the following parts: high stability, low phase noise crystal oscillator, microwave sampling phase detector SPD, loop filter and automatic capture circuit, lock detection circuit, voltage controlled oscillator such as DRO medium Oscillator / CRO Ceramic Dielectric Oscillator and Coupling, Amplifying and Filtering Circuits, etc.

[0017] Harmonic phase-locked frequency source is a phase-locked frequency source realized by harmonic phase-locked technology, which is different from traditional phase-locked frequency sources realized by integer or fractional frequency division technology. Its main advantage is the phase noise characteristic. Due to the application of prescaler and frequency divider, the traditional phase-locked frequency source has a great inf...

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Abstract

The invention discloses a harmonic phase locking frequency source which comprises a crystal oscillator, a microwave sampling phase discriminator, a loop filter and automatic capture circuit, a voltage-controlled oscillator, a coupler and a locking detection circuit. The invention also provides a phase locking method of the harmonic phase locking frequency source. The frequency source provided by the invention has the characteristics of low phase noise, better clutter suppression characteristic and the like.

Description

technical field [0001] The invention relates to the technical field of analog phase-locked frequency synthesis, in particular to a harmonic phase-locked frequency source and a phase-locked method thereof. Background technique [0002] With the current development of communication and radar technology, higher and higher requirements are put forward for the phase noise and clutter suppression characteristics of the local oscillator (LO) in the system. In many cases, the traditional phase-locked frequency source can no longer meet the requirements of use, and the harmonic phase-locked frequency source has the advantages of low phase noise, high clutter suppression, low cost, etc., in most cases completely It can replace the traditional phase-locked frequency source. Contents of the invention [0003] In view of the current development of communication and radar technology, higher and higher requirements are put forward for frequency sources. Traditional frequency sources can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/08
Inventor 杨光文传斌孙敏
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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