LOW_DISTORTION_LOW_LEVEL_AMPLITUDE_MODULATOR

Published:2009/7/1 21:27:00 Author:May | From:SeekIC

This simple diode modulator delivers excellent results when used for high percentage modulation at low signal levels. Constants are shown for a carrier frequency of about 10 MHz, but, with a suitable tank, the circuit will give good results at any frequency at which the diode approximates a good switch. To extend frequency above that for which the IN4148 is suited, a hot-carrier diode (HP2800, etc.) can be substituted. A shunt resistor across the tank circuit can be used to reduce the circuit Q so as to permit high percentage modulation without appreciable distortion.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Amplifier_Circuit/LOW_DISTORTION_LOW_LEVEL_AMPLITUDE_MODULATOR.html

Print this Page | Comments | Reading(3)