US PATENT SUBCLASS 329 / 306
.~ Input signal combined with local oscillator or carrier frequency signal

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


329 /   HD   DEMODULATORS

304  DF  PHASE SHIFT KEYING OR QUADRATURE AMPLITUDE DEMODULATOR {3}
306.~ Input signal combined with local oscillator or carrier frequency signal {1}
307  DF  .~.~> Including phase or frequency locked loop {1}

DEFINITION

Classification: 329/306

Input signal combined with local oscillator or carrier frequency signal:

(under subclass 304) Subject matter where the modulated signal input to the demodulator interacts therein with oscillations from a secondary source.

(1) Note. The secondary oscillations may be internally generated or externally supplied and may be at a frequency other than that of the modulated input signal's carrier.

SEE OR SEARCH THIS CLASS, SUBCLASS:

302, for similar structure in a frequency shift keying or minimum shift keying demodulator.

323+, for similar structure in a frequency modulation demodulator.

346, for similar structure in a phase modulation demodulator.

358+, for similar structure in an amplitude modulation demodulator.