.~> Input signal combined with local oscillator or carrier frequency signal
DEFINITION
Classification: 329/345
PHASE MODULATION DEMODULATOR:
(under the class definition) Subject matter where the demodulator extracts the modulating signal from a modulated signal which has undergone phase modulation.
(1) Note. Phase modulation occurs when the phase of a carrier is varied over a continuum of values in accordance with the modulating signal.
(2) Note. This subclass includes phase modulation demodulators, per se. See SEARCH CLASS notes below for combinations with the subject matter of this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
304+, for a phase shift keying or quadrature amplitude demodulator.
311+, for a pulse demodulator.
315+, for a frequency demodulator.
347+, for an amplitude demodulator.
SEE OR SEARCH CLASS
455, Telecommunications,
42+, for phase demodulation in a system with separated transmitter and receiver, and subclasses 205+ for a combination of phase demodulator with receiving structure.
