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Class Information
Number: 342/437
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 more than two antennas
Description: Subject matter including more than two fixed directional antennas.










Patents under this class:

Patent Number Title Of Patent Date Issued
8532581 Wireless communication apparatus and method for selecting quality-reporting sub-carrier bands based on sub-carrier band quantity information from base station Sep. 10, 2013
7982672 Reception device Jul. 19, 2011
7663549 Incoming direction estimation apparatus Feb. 16, 2010
7565147 System and method for synchronizing base stations Jul. 21, 2009
7501959 Signal incoming direction estimation apparatus Mar. 10, 2009
7450922 Data unit detection including antenna diversity Nov. 11, 2008
7348924 Method of positioning the antennas of a data transmission system Mar. 25, 2008
7304609 Hybrid wireless ranging system and associated methods Dec. 4, 2007
7280073 Method and system for determining direction of transmission using multi-facet antenna Oct. 9, 2007
7042394 Method and system for determining direction of transmission using multi-facet antenna May. 9, 2006
6774845 Single receiver wireless tracking system Aug. 10, 2004
6661378 Active high density multi-element directional antenna system Dec. 9, 2003
6573865 Method and apparatus for radio location Jun. 3, 2003
5745078 Method and apparatus for radio location Apr. 28, 1998
5355141 Channelized bearing processor Oct. 11, 1994
5274389 Broadband direction finding system Dec. 28, 1993
5255000 Transmission signal direction finding apparatus and method Oct. 19, 1993
5160934 Cross-switched MICRAD seeker Nov. 3, 1992
5148180 Method and apparatus for passive direction finding with sideband determination Sep. 15, 1992
5084709 Method and apparatus for radio location Jan. 28, 1992
5053784 Apparatus and method for measuring the azimuth and elevation of an object Oct. 1, 1991
4991147 Preformed beam tracker Feb. 5, 1991
4929958 High precision radar detection system and method May. 29, 1990
4780722 Radio direction-finding Oct. 25, 1988
4313117 Method and apparatus for electrically scanning an antenna array in a monopulse DF radar system Jan. 26, 1982
4210913 Passive detection and tracking apparatus Jul. 1, 1980
4198705 Directional energy receiving systems for use in the automatic indication of the direction of arrival of the received signal Apr. 15, 1980
4198633 Electronic signal processing system Apr. 15, 1980
4152703 Homing device May. 1, 1979
4114157 Bearing detection system Sep. 12, 1978
3976151 Self-propelled golf cart Aug. 24, 1976
3965473 Direction finders Jun. 22, 1976
3936832 System to process antenna beams to obtain the angular location of target with high resolution and accuracy Feb. 3, 1976











 
 
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