US PATENT SUBCLASS 455 / 193.1
.~.~ With antenna circuit tuning


Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
150.1  DF  .~ Signal selection based on frequency (e.g., tuning) {13}
193.1.~.~ With antenna circuit tuning {2}
193.2  DF  .~.~.~> With plural resonant circuits
193.3  DF  .~.~.~> Including varactor diode


DEFINITION

Classification: 455/193.1

With antenna circuit tuning:

(under subclass 150.1) Subject matter wherein the signal selection means comprises a tunable RF circuit coupled to a carrier wave reception means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

121+, for tunable transmitters with tuning means in the antenna circuit.

275, for receivers with plural antennas and including frequency selecting means.

289, for receivers with tunable coupling means between the antenna and receiver input.