Angle modulation
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Angle_modulation".

Angle modulation is a class of analog modulation. These techniques are based on altering the angle (or phase) of a sinusoidal carrier wave to transmit data, as opposed to varying the amplitude, such as in AM transmission.

The two main types of angle modulation are:

• Frequency modulation (FM).
• Phase modulation (PM), with its digital correspondence phase-shift keying (PSK).

See also

• Modulation
• Polar modulation

External links

• Discussion of practical implementation of FM/PM systems

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