US PATENT SUBCLASS 342 / 424
.~.~.~.~.~ Tracking interferometer


Current as of: June, 1999
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342 /   HD   COMMUNICATIONS: DIRECTIVE RADIO WAVE SYSTEMS AND DEVICES (E.G., RADAR, RADIO NAVIGATION)

350  DF  DIRECTIVE {10}
385  DF  .~ Beacon or receiver {2}
417  DF  .~.~ Direction-finding receiver only {14}
422  DF  .~.~.~ With self-orienting antenna pattern {4}
423  DF  .~.~.~.~ Plural antennas {1}
424.~.~.~.~.~ Tracking interferometer


DEFINITION

Classification: 342/424

Tracking interferometer:

(under subclass 423) Subject matter wherein means for the combined reception pattern of the antennas is automatically adjusted to direction of and in response to, an incoming signal.

(1) Note. Usually the signals received by the antenna are compared in a phase discriminator.