Power measurement system demodulating circuit

Published:2011/7/6 20:55:00 Author:Christina | Keyword: Power measurement system, demodulating circuit | From:SeekIC

You can use the AD8362's UTGT port to form the demodulating circuit, this circuit can take out the envelope of the RF AM wave and revert it into the intermediate and low frequency signals. The demodulation circuit and the envelope process are as shown in figure (a) and (b). Here we suppose the input signal is the modulated 100kHz sine wave, the carrier frequency is 100 MHz. If you connect the 1.25V (average) voltage VT to the pin-14, the output voltage of pin-12 is the modulated 100kHz sine wave signal.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Power_measurement_system_demodulating_circuit.html

Print this Page | Comments | Reading(3)