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Anti-radiation differential crystal oscillator

A crystal oscillator and anti-radiation technology, applied in power oscillators, electrical components, etc., can solve problems such as unsatisfactory

Inactive Publication Date: 2021-04-23
BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to design an anti-irradiation differential crystal oscillator to solve the problem that the traditional differential crystal oscillator cannot meet the frequency stability of ≤±50ppm in a wide temperature range of -55°C ~ +125°C, by optimizing the structure and debugging method of the product , to achieve the frequency stability index of the crystal oscillator in the wide temperature range of -55 ° C ~ +125 ° C ≤ ± 50ppm, through the design of miniaturization and integration, the product's SMD7050 external dimension has been realized

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] figure 1 , 2 It is respectively a side view and a top view of a radiation-resistant differential crystal oscillator provided by an embodiment of the present invention, as shown in figure 1 , 2 As shown, the device includes: a base 101 , a radiation-resistant differential chip 102 , a quartz oscillator and a metal cover 105 , wherein the quartz oscillator includes a quartz wafer 103 and a gold electrode 104 .

[0027] The base 101 can be a ceramic base made of ceramic material. It has a cavity for placing the radiation-resistant differential chip 102, a quartz vibrator and a metal cover plate 105, and the top is open, and electrically connects various parts and provides final input and output ports. The base...

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Abstract

The invention relates to an anti-radiation differential crystal oscillator, and the crystal oscillator comprises a base, an anti-radiation differential chip, a quartz oscillator and a metal cover plate; an opening is formed in the top of the base; the anti-radiation differential chip is electrically connected with a bonding pad at the bottom of the accommodating cavity and is used for being matched with the quartz vibrator to generate an oscillation circuit, performing temperature compensation calculation on the quartz vibrator and finally outputting a high-frequency differential signal; the quartz oscillator is arranged above the anti-radiation differential chip and is used for cooperating with the anti-radiation differential chip to generate an oscillation circuit; the metal cover plate covers the opening in the top of the base. The problem that in a traditional differential crystal oscillator, the frequency stability of the crystal oscillator in the wide temperature range of-55 DEG C to 125 DEG C is smaller than or equal to + / -50 ppm is solved, the index that the frequency stability of the crystal oscillator in the wide temperature range of-55 DEG C to 125 DEG C is smaller than or equal to + / -50 ppm is achieved by optimizing the product structure and a debugging method, and the SMD7050 boundary dimension of the product is achieved through miniaturization and integration design.

Description

technical field [0001] The invention relates to the field of oscillator design, in particular to an anti-irradiation differential crystal oscillator. Background technique [0002] With the wide application of radiation-resistant differential crystal oscillators in electronic equipment, higher requirements are put forward for differential crystal oscillators in terms of volume, temperature, frequency and temperature stability, etc. Therefore, it is necessary to design crystal oscillators for miniaturization and radiation resistance , to achieve product miniaturization and high-index features, to meet the relevant requirements of electronic equipment. [0003] The traditional differential crystal oscillator requires the product to meet the frequency stability ≤±50ppm in the temperature range of -40℃~+85℃ in the working environment, which cannot meet the requirement of frequency stability ≤±50ppm in the wide temperature range of -55℃~+125℃. Therefore, the requirement of a diff...

Claims

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Application Information

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IPC IPC(8): H03B5/06H03B5/36
Inventor 睢建平郑文强段友峰崔巍刘小光
Owner BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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