What are the 2 types of angle modulation?

There are two main types of angle modulation: frequency modulation (FM) and phase modulation (PM).

In FM, the frequency of the carrier signal is varied in proportion to the amplitude of the modulating signal. As the amplitude of the modulating signal changes, the frequency of the carrier signal changes correspondingly. This results in a signal that has a constantly varying frequency, which can be used to transmit information.

In PM, the phase of the carrier signal is varied in proportion to the amplitude of the modulating signal. As the amplitude of the modulating signal changes, the phase of the carrier signal changes correspondingly. This results in a signal that has a constantly varying phase, which can also be used to transmit information.

Both FM and PM are examples of angle modulation, as they modify the angle of the carrier signal in order to carry information. They are widely used in telecommunications, including radio and television broadcasting, satellite communication, and digital communication systems.