Intermodulation product

From Free net encyclopedia

An intermodulation product is the product of two signals mixed in a nonlinear device, such as a nonlinear amplifier.

It is usually f1+f2, f1-f2, 2f1-f2, 2f2-f1, 3f1-2f2, 3f2-2f1, and more sums and differences of the two frequencies and their harmonics. The higher the order, the weaker the intermodulation product.

On musical instruments, it is the beat frequency produced when two other notes are produced. On a radio, if 2 strong stations are there, they will appear in the wrong places on the dial on cheap radios.

See also

• Intermodulation
• Intermodulation noise
• Intermodulation distortion
• Beat frequency