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Class Information
Number: 342/440
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > With plural fixed antenna pattern comparing > Including a goniometer
Description: Subject matter wherein means receiving energy from two or more antennas having fixed angularly disposed directional characteristics, sets up, adjacent an orientable pick up device, singularly disposed fields whose resultant field bears a fix angular relation to the direction of the received energy.

Patents under this class:

Patent Number Title Of Patent Date Issued
6989789 Method for locating radioelectric sources using two-channel high resolution radiogoniometer Jan. 24, 2006
6744407 Method and device for space-time estimation of one or more transmitters Jun. 1, 2004
6239746 Radiogoniometry method and device co-operating in transmission May. 29, 2001
5812092 Radiocommunications and localizing device Sep. 22, 1998
5790075 Beam antenna direction measuring method, direction measuring device and antenna direction controller Aug. 4, 1998
5030959 Enhanced automatic bearing indicator system Jul. 9, 1991
4654664 Electronic null-seeking goniometer for ADF Mar. 31, 1987
4507663 Automatic direction finder Mar. 26, 1985
4318106 Direction finding system Mar. 2, 1982
4306240 Bearing measuring system for frequency modulation Dec. 15, 1981
4163978 Radio direction finding Aug. 7, 1979
3995236 Double sideband modulator Nov. 30, 1976

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