Signal Mixing using JFET in AM Receiver: Orcad Capture Video Tutorial

This orcad capture video tutorial shows mixing of received AM signal with the locally generated carrier signal using J2N3819 JFET transistor to obtain IF signal. The modeled received AM frequency is 600KHz and the local oscillator carrier signal frequency is 1055KHz, therefore, producing 455KHz intermediate frequency(IF) signal. The waveform of the IF signal is plotted. The schematics can further be implemented into circuit board design.

Video: Signal Mixing using JFET in AM Receiver

The following picture shows the circuit schematics and result

Fig: Schematics of Signal mixing using JFET in AM Receiver

Fig: Waveform of IF, RF, Carrier signal in JFET Mixing procedure

Fig: Spectrum of IF,RF,Carrier Signal in JFET Mixing Procedure