What are intermodulation products?

Intermodulation products are unwanted signals that occur when two or more signals interact in a nonlinear system, such as an amplifier or mixer. This interaction can create new frequencies that are combinations of the original signals and their harmonics. For example, if two signals at different frequencies enter a nonlinear device, intermodulation products can generate new signals at frequencies that are mathematical combinations (like the sum or difference) of the original frequencies. These products can interfere with the desired signals, reducing the clarity and quality of communication.

The presence of intermodulation products is significant because they can lead to issues such as distortion and interference in communication systems, making it important for engineers and technicians to understand and manage these unwanted signals for optimal system performance.