Frequency compensation system of crystal oscillator with amplitude phase compensation

A technology of crystal oscillator and phase compensation, which is applied in the direction of power oscillators and electrical components, can solve the problem of inability to optimize the near-end dynamic phase noise in the low-frequency range, so as to optimize the dynamic phase noise, expand the range of frequency compensation, reduce The effect of frequency changes

Active Publication Date: 2020-04-28
THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a frequency compensation system of a crystal oscillator with amplitude and phase compensation to solve the problem that the mechanical shock absorption method in the prior art cannot optimize the near-end dynamic phase noise in the low frequency range

Method used

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  • Frequency compensation system of crystal oscillator with amplitude phase compensation
  • Frequency compensation system of crystal oscillator with amplitude phase compensation
  • Frequency compensation system of crystal oscillator with amplitude phase compensation

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Embodiment Construction

[0040] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0041] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0042] Such as figure 1 as shown, figure 1 It shows a schematic structural diagram of a frequency compensation system 10 for a crystal oscillator with amplitude and phase compensation provided by an embodiment of the present invention, which includes: an acceleration ...

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Abstract

The invention is applicable to the technical field of crystal oscillators, and provides a frequency compensation system of a crystal oscillator with amplitude phase compensation. The system comprisesan acceleration sensor, an acceleration compensation circuit and a phase amplitude compensation circuit; the acceleration of the crystal oscillator is detected through the acceleration sensor, and then the acceleration voltage signal is subjected to acceleration compensation through the acceleration compensation circuit to obtain acceleration compensation voltage; finally, the amplitude and phasecompensation is carried out on the acceleration compensation voltage through the phase amplitude compensation circuit to obtain a final compensation voltage, so the final compensation voltage can reduce the amplitude and phase deviation of a voltage signal when the acceleration sensor monitors the vibration intensity of the crystal oscillator, thereby reducing the frequency change of the crystal oscillator, enlarging the frequency compensation range of the crystal oscillator, and optimizing the near-end dynamic phase noise of the crystal oscillator.

Description

technical field [0001] The invention belongs to the technical field of crystal oscillators, in particular to a frequency compensation system of a crystal oscillator with amplitude and phase compensation. Background technique [0002] Crystal oscillators have the characteristics of high frequency stability and low phase noise. Crystal oscillators are usually used as system reference signal sources and are widely used in aerospace and military electronic systems such as vehicle, airborne, and missile-borne. Crystal oscillator is a device that is very sensitive to vibration, and its electrical performance indicators, especially phase noise, will seriously deteriorate under vibration conditions. The greater the vibration intensity, the greater the deterioration of the dynamic phase noise. [0003] At present, the commonly used solution is to use mechanical vibration reduction to reduce the vibration intensity of the crystal oscillator through the shock absorber, so as to reduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/04
CPCH03B5/04
Inventor 徐淑壹王占奎刘兰坤刘晓红陈中平方修成逄杰张新军李翠立李伟明杨晓雷陈子恩
Owner THE 13TH RES INST OF CHINA ELECTRONICS TECH GRP CORP
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