According to some embodiments of the present invention, a phase frequency detector includes a temperature sensing circuit.
依照本发明的某些实施例,相位频率检测器包括温度感测电路。
2
According to the principle of view the Doppler frequency detection, the detector makes up of the transmitter, the transfer circuit, receiver and signal processing circuit.
The toroidal core was excited by sharp pulse current. The sensor circuit is composed of peak value detector, Butterworth low-pass filter and differential amplifier.