US PATENT SUBCLASS 455 / 324
.~.~.~ Homodyne (i.e., zero beat or synchrodyne reception)

Current as of: June, 1999
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130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
313  DF  .~ Frequency modifying or conversion {4}
323  DF  .~.~ Particular frequency conversion structure or circuitry {5}
324.~.~.~ Homodyne (i.e., zero beat or synchrodyne reception)

DEFINITION

Classification: 455/324

Homodyne (e.g., zero beat or synchrodyne reception):

(under subclass 323) Subject matter comprising frequency conversion or modifying means and combined with means whereby a local signal wave of the same frequency as the incoming modulated wave is injected therein (i.e., zero beat).

SEE OR SEARCH CLASS

329, Demodulators,

323+, 346 and 358+ use of synchronized oscillations locally generated in a frequency, phase, or amplitude demodulator,

respectively.