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Class Information
Number: 342/429
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > With continuously movable antenna pattern > Including a stationary antenna
Description: Subject matter including a separate antenna that has an antenna pattern which does not move.










Patents under this class:

Patent Number Title Of Patent Date Issued
8587432 Electronic article surveillance systems, apparatus, and methods Nov. 19, 2013
8121225 Estimating the angle of arrival of a signal received by an array of commutated antenna elements Feb. 21, 2012
7110719 Indoor mobile communication device Sep. 19, 2006
7002461 Passive RFID transponder/machine-mounted antenna and reader system and method for hidden obstacle detection and avoidance Feb. 21, 2006
6621417 Passive RFID transponder/reader system and method for hidden obstacle detection and avoidance Sep. 16, 2003
5402132 Monopole/crossed slot single antenna direction finding system Mar. 28, 1995
5323167 Antenna configuration and system for determining the direction of a radio frequency signal Jun. 21, 1994
5198823 Passive secondary surveillance radar using signals of remote SSR and multiple antennas switched in synchronism with rotation of SSR beam Mar. 30, 1993
5003316 Single null miniature direction finder Mar. 26, 1991
4667203 Method and system for determining position using signals from satellites May. 19, 1987
4654664 Electronic null-seeking goniometer for ADF Mar. 31, 1987
4635065 Antenna device for direction finders Jan. 6, 1987
4617570 Interference cancelling receiver having high angular resolution intercept of transmitted radiators Oct. 14, 1986
4358768 Radio direction finder Nov. 9, 1982
4197542 Radio navigation system Apr. 8, 1980
3987446 Direction finding apparatus Oct. 19, 1976
3943516 Strobe generator Mar. 9, 1976











 
 
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