What does 'intermodulation' mean in radio systems?

Intermodulation refers to a form of distortion that occurs when two or more signals interact within a non-linear system, such as a radio transmitter or receiver. When these signals mix, they generate additional frequencies that are not present in either of the original signals. These new frequencies, called intermodulation products, can interfere with the desired signals, leading to degraded performance or unwanted noise in the radio communication system.

Understanding intermodulation is crucial for radio system engineers and operators, as it can significantly impact signal quality and the overall functionality of communication systems. By recognizing and addressing intermodulation, engineers can implement design strategies or filtering techniques to mitigate its effects and ensure clearer communication.