Temperature-compensated crystal oscillator based on digital circuit

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United States of America Patent

PATENT NO 10367451
APP PUB NO 20170373638A1
SERIAL NO

15696533

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Abstract

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The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage Vc(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature sensor and the real temperature of the resonant wafer in the prior art.

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Patent Owner(s)

  • UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Guo, Lianping Chengdu, CN 9 8
Liu, Xingqi Chengdu, CN 2 0
Pan, Huiqing Chengdu, CN 4 3
Qiu, Duyu Chengdu, CN 7 8
Tan, Feng Chengdu, CN 21 34
Yang, Kuojun Chengdu, CN 7 11
Ye, Peng Chengdu, CN 35 696
Zhang, Qinchuan Chengdu, CN 7 10

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