Interference mechanisms in an AM receiver

TR 060

Interference mechanisms in an AM receiver

This document introduces the subject of interference mechanisms in AM broadcast receivers.

Open file (pdf, 0.6 MB)

It provides a brief primer on the technology of AM receivers and gives an overview of the subject of interference to those without specialised knowledge of AM radio systems. Much more detailed treatments to be found in various texts on the subject are referenced in this report.

The three main types of interference are described and their impact is illustrated through some example scenarios that show how an elementary AM radio circuit would react. In conclusion, steps that can mitigate the situation are suggested.

Key words: Amplitude Modulation, Modulation Depth, Noise, Interference, Masking Effect.