In an AM receiver, the input signal to the IF amplifier will have
A)local oscillator plus the modulated carrier
B)local oscillator minus the modulated carrier
C)both A and B
D)only the modulation frequencies

Question

Quizplus · Accepted Answer

In an AM receiver, the input signal to the IF (Intermediate Frequency) amplifier consists of both the sum and difference of the local oscillator frequency and the modulated carrier frequency. This is due to the mixing process in the receiver that produces both sum and difference frequencies as part of the heterodyning process to convert the received signal to the intermediate frequency.

In an AM Receiver, the Input Signal to the IF