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Temperature control method of crystal oscillator, crystal oscillator and manufacturing method of crystal oscillator

A technology of a crystal oscillator and a manufacturing method, which is applied to power oscillators, electrical components, etc., can solve the problems of inconsistency in temperature sensing, many discrete devices, and complex application structures, so as to improve the accuracy and reliability of temperature control and reduce the impact. , the effect of reducing heat conduction

Inactive Publication Date: 2015-06-24
GUANGDONG DAPU TELECOM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above method also has some problems. First of all, its application structure is more complicated, there are more discrete devices, and the cost is higher. Secondly, it occupies a relatively large area of ​​PCB. Finally, there is inconsistency in temperature sensing. Because it is a discrete device, it will inevitably lead to quartz crystals. The difference between the temperature felt by 17 and the temperature felt by the temperature sensor 15 will inevitably lead to the inaccuracy of the trimming of the offset, and the output frequency will not meet the high precision requirement

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  • Temperature control method of crystal oscillator, crystal oscillator and manufacturing method of crystal oscillator
  • Temperature control method of crystal oscillator, crystal oscillator and manufacturing method of crystal oscillator
  • Temperature control method of crystal oscillator, crystal oscillator and manufacturing method of crystal oscillator

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Effect test

Embodiment 1

[0052] On the one hand, a temperature control method for a crystal oscillator is provided. A heat insulation area is provided on a substrate for fixing a crystal, so that the heat insulation area is located around the crystal to reduce heat conduction between the crystal and the substrate. In this embodiment, the heat insulation area includes a heat insulation groove opened on the substrate, by reducing the solid heat conduction area between the crystal and the substrate, using air to insulate the crystal and the substrate, reducing the heat between the crystal and the substrate Conduction, while reducing the influence of substrate stress on the crystal, improving the shock resistance and anti-aging rate of the crystal oscillator.

[0053] On the other hand, if figure 2 , 3 , 8, and 9, a crystal oscillator using the above-mentioned temperature control method is provided, including a substrate 1 and a crystal 3 fixedly arranged on the substrate 1, the substrate 1 is provided ...

Embodiment 2

[0060] On the one hand, a temperature control method for a crystal oscillator is provided. A heat insulation area is provided on a substrate for fixing a crystal, so that the heat insulation area is located outside the four sides of the crystal, thereby reducing heat conduction between the crystal and the substrate. In this embodiment, the heat insulation area includes a heat insulation groove opened on the substrate, by reducing the solid heat conduction area between the crystal and the substrate, using air to insulate the crystal and the substrate, reducing the heat between the crystal and the substrate Conduction, while reducing the influence of substrate stress on the crystal, improving the shock resistance and anti-aging rate of the crystal oscillator.

[0061] On the other hand, if Figure 4 , 5 As shown in , 10 and 11, a crystal oscillator using the above-mentioned temperature control method is provided, which includes a substrate 1 and a crystal 3 fixedly arranged on ...

Embodiment 3

[0068] On the one hand, a temperature control method for a crystal oscillator is provided. A heat insulation area is provided on a substrate for fixing a crystal so that the heat insulation area is located outside and below the four sides of the crystal to reduce heat conduction between the crystal and the substrate. In this embodiment, the heat insulation area includes a heat insulation groove opened on the substrate, by reducing the solid heat conduction area between the crystal and the substrate, using air to insulate the crystal and the substrate, reducing the heat between the crystal and the substrate Conduction, while reducing the influence of substrate stress on the crystal, improving the shock resistance and anti-aging rate of the crystal oscillator.

[0069] On the other hand, if Figure 6 , 7 As shown in , 12 and 13, a crystal oscillator using the above-mentioned temperature control method is provided, which includes a substrate 1 and a crystal 3 fixedly arranged on...

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Abstract

The invention discloses a temperature control method of a crystal oscillator. A heat insulating region is arranged on a substrate and located on the periphery and on at least one side of the lower portion of a crystal, and heat conduction between the crystal and the substrate is reduced. The invention further discloses the crystal oscillator and a manufacturing method of the crystal oscillator in the scheme. The manufacturing method includes the steps of determining the position of the crystal, determining the positions of heat insulating grooves, forming the heat insulating grooves and fixing the crystal. By the adoption of the temperature control method of the crystal oscillator, the crystal oscillator adopting the method and the manufacturing method of the crystal oscillator, heat conduction between the crystal and the substrate is effectively reduced, the temperature control accuracy and reliability of the crystal are improved, and the influences of the stress of the substrate on the crystal are reduced.

Description

technical field [0001] The invention relates to the technical field of crystal oscillators, in particular to a method for controlling the temperature of a crystal oscillator, a crystal oscillator and a manufacturing method thereof. Background technique [0002] Crystal oscillator is a high-precision and high-stability oscillator, which is widely used in various oscillating circuits such as color TVs, computers, remote controls, etc., and is commonly used in frequency generators in communication systems to generate clocks for data processing equipment signals and provide reference signals for specific systems. [0003] Among them, the temperature-compensated crystal oscillator, as a clock source with excellent performance, is very popular in high-end electronic products. Limited by the working environment temperature. [0004] Such as figure 1 Shown is a structure of a crystal oscillator in the prior art, which can be roughly divided into four parts, a temperature sensor 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/04
Inventor 刘朝胜周文王春明张立林
Owner GUANGDONG DAPU TELECOM TECH CO LTD