Oliff PLC
Temperature-compensated crystal oscillator based on digital circuit
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.
UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA
H H H H H
H03L H03L H03L H03B H03B
inventional inventional inventional inventional inventional
Duyu Huiqing Xingqi Lianping Feng Peng Kuojun Qinchuan
Qiu Pan Liu Guo Tan Ye Yang Zhang