High-stability temperature compensation quartz crystal oscillator

By employing a crystal base and a lower ceramic base design in the temperature-compensated quartz crystal oscillator, combined with a quartz wafer with a corner structure and a through-hole, the problem of temperature sensing difference between the compensation chip and the quartz wafer is solved, achieving high frequency stability and accurate compensation.

CN224418785UActive Publication Date: 2026-06-26TAIJING (NINGBO) ELECTRONICS CO LTD
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Patent Information

Application Number
CN202521384730.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-03
Publication Date
2026-06-26
Estimated Expiration
2035-07-03

AI Technical Summary

Technical Problem

In existing temperature-compensated quartz crystal oscillators, the compensation chip and the quartz crystal are not located in the same cavity, which leads to differences in temperature sensing, frequency deviation, and thermal frequency drift, affecting product stability.

Method used

It adopts a crystal base and a lower ceramic base design, with the compensation chip and quartz wafer sharing a single internal cavity. Combined with a quartz wafer with a corner structure and a barrier via, it improves stability.

Benefits of technology

This reduces the temperature difference between the compensation chip and the quartz crystal, improves frequency compensation accuracy and frequency stability under temperature changes, and avoids thermal frequency drift and base offset problems.

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Abstract

The utility model relates to a high stability temperature compensation quartz crystal oscillator, comprising a crystal pedestal and a lower ceramic pedestal which are stacked up and down, the lower part of the crystal pedestal is provided with an upper groove, the upper groove is internally provided with a compensation chip, the upper part of the lower ceramic pedestal is provided with a lower groove, the lower groove is internally provided with a quartz chip, and the lower ceramic pedestal is provided with a quartz chip. The quartz chip comprises an upper groove and a lower groove, the upper groove and the lower groove are butted and spliced up and down to form an inner cavity, the quartz chip comprises a quartz wafer, the quartz wafer is composed of a fixed section wafer and a turning section wafer, and one end of the fixed section wafer is provided with a bent turning section wafer. According to the utility model, the difference between the temperature sensed by the compensation chip and the ambient temperature of the quartz wafer can be reduced, the accurate temperature compensation frequency is provided, and the high stability of the frequency when the temperature is transiently changed is achieved; in addition, the quartz wafer with a corner structure is also designed, and the working stability of the quartz wafer can be effectively improved under the dual effects of the corner structure and the partition through hole.
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