A Simple Operational Amplifier Based AM Detector and Its Application
Muhammad Taher Abuelma’atti and Zainulabedeen Jamal Khalifa
A simple envelope detector is presented. The proposed circuit can be implemented using one operational amplifier that can be supplied by a dual supply voltage or a single supply voltage. The proposed circuit can be used to build a simple radio receiver using one or two operational amplifiers in addition to some passive elements.
Keywords: Envelope detector, operational amplifier