US PATENT SUBCLASS 455 / 302
.~.~ Image frequency suppression

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
296  DF  .~ Noise or interference elimination {10}
302.~.~ Image frequency suppression

DEFINITION

Classification: 455/302

Image frequency suppression:

(under subclass 296) Subject matter comprising the combination of frequency modifying or conversion means with significant details of means whereby an unwanted signal appearing at the output of the conversion means, and whose frequency differs from the desired signal by twice the intermediate frequency, is suppressed or eliminated.