Question

In what fundamental way do FM and PM differ from AM? Eplain it in as many ways as you can.

Answer 1

FM and PM differ from AM in fundamental ways, such as modulation method, noise rejection, and signal transmission.

Step-by-step explanation:

FM and PM differ from AM in fundamental ways:

1. Modulation Method: AM uses amplitude modulation, which means it modifies the amplitude of the carrier wave to encode information. FM, on the other hand, uses frequency modulation, where the frequency of the carrier wave is changed to represent information.
2. Noise Rejection: AM is more susceptible to noise interference because the amplitude of the wave carries the information. FM, however, focuses on variations in frequency and can reject noise added onto the amplitude of the carrier wave.
3. Signal Transmission: AM signals can travel long distances and go around obstacles because of their low frequencies. FM signals, with their higher frequencies, are best received when there is a direct line of sight between the transmitter and receiver.