Method for stress compensation of crystal frequency temperature characteristic based on temperature sensing material

A technology for sensing materials and temperature characteristics, applied in the direction of electrical components, impedance networks, etc., can solve the problems that it is difficult to adapt to the competition of temperature-compensated crystal oscillators, the structure of crystal oscillators is complicated, and it is difficult to meet, and achieve good pullability and performance The effect of low power consumption and simplified structure

Inactive Publication Date: 2005-09-21
XIDIAN UNIV
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Problems solved by technology

Due to the complex structure of the crystal oscillator compensated by the above-mentioned line compensation method, large volume, high power consumption, and high cost, it is difficult to meet the needs of technologica

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  • Method for stress compensation of crystal frequency temperature characteristic based on temperature sensing material
  • Method for stress compensation of crystal frequency temperature characteristic based on temperature sensing material
  • Method for stress compensation of crystal frequency temperature characteristic based on temperature sensing material

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[0013] The present invention will be described in detail below with reference to the accompanying drawings.

[0014] According to the characteristic that the frequency of the oscillator changes with the change of the stress applied to it, the present invention uses a temperature sensitive device to influence the magnitude of the stress applied to the crystal resonator to compensate the change of the frequency of the crystal oscillator with temperature. The force-frequency effect of crystals and crystal oscillators is that when the resonator is under stress, its resonant frequency will change accordingly. This stress can be caused by external forces, acceleration and vibration, electrode deformation, crystal support, or other factors. As the applied force increases, the change in the oscillation frequency of the crystal also increases, and the change in the force reduction frequency also decreases. The following is the relationship between the specific crystal frequency increment a...

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Abstract

This invention discloses a method for compensating crystal frequency temperature property based on temperature sensing material stress, which contains using vacuum plating method to plate temperature sensing double-metal material on the crystal chip or electrode of crystal resonator which can compensate the frequency variation due to temperature of crystal. Said method can make the frequency temperature property of crystal reach positive and negative 0.2ppm and simply the current circuit of temperature compensation with small volume and low cost.

Description

Technical field [0001] The invention relates to a frequency compensation method of a crystal resonator, in particular to a method for compensating the temperature frequency characteristic of a crystal based on the stress of a temperature sensing material. Background technique [0002] Crystal oscillators have been widely used in technical fields such as communications, post and telecommunications, aerospace, national defense and military industry, electronic technology, and instrumentation. It is mainly used as a clock or standard frequency source for many devices in these areas. With the continuous advancement of science and technology, people have higher and higher requirements for the frequency-temperature characteristics, volume, power consumption, and cost of crystal oscillators. The frequency-temperature compensation methods of the existing temperature-compensated crystal oscillators are almost entirely based on the frequency-temperature characteristics of the crystal devic...

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Application Information

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IPC IPC(8): H03H3/04H03H9/02H03H9/15
Inventor 周渭高建宁宣宗强张雪萍王海周晖
Owner XIDIAN UNIV
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