US PATENT SUBCLASS 342 / 81
.~.~ Beam direction by phase or frequency control

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

73  DF  RETURN SIGNAL CONTROLS RADAR SYSTEM {3}
74  DF  .~ Antenna control {2}
81.~.~ Beam direction by phase or frequency control

DEFINITION

Classification: 342/81

Beam direction by phase or frequency control:

(under subclass 74) Subject matter including control of which way the signal emanating from the antenna is directed by varying the phase or frequency of the signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

83+, for control of the radar transmitter signal phase or frequency other than pulse repetition frequency (PRF).

154, for radar direction determination combined with beam steering.

157, for radar direction determination with frequency or phase steering.