Patents
Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128)
12/1980
12/23/1980US4241348 Radar equipment for vehicles
12/16/1980US4240080 Short backfire antenna with sum and error patterns
12/11/1980WO1980002774A1 Antenna system
12/10/1980EP0020196A1 Ringplate-type microwave array antenna with feeding system and its application in radars
12/09/1980US4238797 Multi-beam antenna controller
11/1980
11/25/1980US4236161 Array feed for offset satellite antenna
11/04/1980US4232321 Multiple beam satellite antenna with preferred polarization distribution
10/1980
10/28/1980US4231040 Simultaneous multiple beam antenna array matrix and method thereof
10/21/1980US4229745 Edge slotted waveguide antenna array with selectable radiation direction
10/14/1980US4228436 Limited scan phased array system
09/1980
09/16/1980US4223310 Multi-transceiver antenna
09/16/1980US4223283 Two into three port phase shifting power divider
09/09/1980US4222054 Radio frequency lens
09/03/1980EP0015018A1 A lens antenna arrangement
09/02/1980US4220957 Dual frequency horn antenna system
08/1980
08/20/1980EP0014692A2 Mode coupler in an automatic angle tracking system
08/20/1980EP0014650A1 Microwave adaptive spatial filter and its method of use in lowering or suppressing the sidelobes of the radiation pattern of an antenna
08/20/1980EP0014605A1 Reverse Cassegrain antenna for multipurpose radar
08/05/1980US4216475 Digital beam former
07/1980
07/15/1980US4213132 Antenna system with multiple frequency inputs
07/09/1980EP0013240A1 Common antenna for primary and secondary radar
06/1980
06/24/1980CA1080351A1 Radio frequency antenna arrays of radiating slot apertures
06/24/1980CA1080333A1 Underground pipe detector
06/11/1980EP0012055A1 Microstrip monopulse primary feed and antenna using same
05/1980
05/14/1980EP0010774A1 Method of and system for tracking an object radiating a circularly or linearly polarized electromagnetic signal
05/13/1980US4203117 Dual beam line scanner for phased array applications
05/06/1980US4201992 Multibeam communications satellite
04/1980
04/15/1980US4198641 Rotating field polarization antenna system
04/15/1980US4198639 Parabolic and log periodic antennas combined for compact high-gain broadband antenna system
04/01/1980US4196436 Differential backlobe antenna array
02/1980
02/05/1980US4187507 Multiple beam antenna array
01/1980
01/29/1980CA1070823A1 Interleaved antenna array for use in a multiple input antenna system
01/08/1980CA1069597A1 Stripline quadrature coupler
12/1979
12/25/1979US4180818 Doppler navigation microstrip slanted antenna
12/25/1979US4180817 Serially connected microstrip antenna array
12/11/1979US4178581 Integrated antenna aperture
12/11/1979US4178550 Method and apparatus to permit substantial cancellation of interference between a received first and second signal
11/1979
11/27/1979US4176359 Monopulse antenna system with independently specifiable patterns
09/1979
09/25/1979US4169266 Aerial system for broadcasting having a passive middle antenna flanked by two end-fed antennas
09/19/1979EP0004215A1 Multimode microwave source and monopulse antenna incorporating such a source
09/18/1979US4168503 Antenna array with printed circuit lens in coupling network
08/1979
08/14/1979US4164742 Multibeam slot array
07/1979
07/11/1979EP0002982A1 Conical scan antenna for tracking radar
06/1979
06/19/1979US4158840 3-D Radar comprising 2-D radar with height finding attachment
05/1979
05/22/1979US4156243 Paraboloid reflector antenna
05/15/1979US4155092 Omnidirectional communications antenna
05/15/1979CA1054699A1 Multiple beam glide slope radio navigation method with two classes of beams
04/1979
04/17/1979US4150383 Monopulse flat plate antenna
04/17/1979US4150378 Height finding radar
04/03/1979US4148035 Subwavelength monopulse antenna
03/1979
03/27/1979US4146893 System for compensating for cross polarization coupling
03/20/1979US4145695 Launcher reflectors for correcting for astigmatism in off-axis fed reflector antennas
03/06/1979US4143379 Antenna system having modular coupling network
02/1979
02/20/1979US4141012 Dual band waveguide radiator
01/1979
01/16/1979CA1046631A1 Multimode horn antenna
12/1978
12/20/1978EP0000039A1 A data transmission process and system to permit substantial reduction of interference between a received first and second digital signal
12/12/1978US4129874 Antenna pattern combiner
12/12/1978US4129872 Microwave radiating element and antenna array including linear phase shift progression angular tilt
11/1978
11/28/1978US4127857 Radio frequency antenna with combined lens and polarizer
10/1978
10/17/1978US4121221 Radio frequency array antenna system
10/17/1978US4121215 Corner reflector antenna for DF and tracking applications
10/17/1978US4120085 Beam type planar array antenna method of fabrication
10/03/1978CA1039842A1 Compact frequency reuse antenna
08/1978
08/15/1978US4107690 Antenna arrangement for radar or direction finding purposes respectively, with sum and difference patterns
08/15/1978US4107680 Digitally processed radar speed sensor
08/15/1978CA1036709A1 Antenna system for radiating doppler coded pattern using multiple beam antenna
07/1978
07/25/1978US4103303 Frequency scanned corner reflector antenna
07/18/1978US4101902 Electronic scanning antenna
07/18/1978US4101901 Interleaved antenna array for use in a multiple input antenna system
07/18/1978US4101892 Localizer antenna array for use with localizer transmitters operating at one carrier frequency
07/11/1978US4099879 Optical antenna or lens
07/04/1978US4099181 Flat radar antenna
06/1978
06/27/1978US4097869 Orthogonal-port, biconical-horn, direction-finder antenna
06/27/1978US4097868 Antenna for combined surveillance and foliage penetration radar
06/20/1978US4096482 Wide band monopulse antennas with control circuitry
06/13/1978US4095230 High accuracy broadband antenna system
05/1978
05/23/1978US4091387 Beam forming network
05/16/1978US4090199 Radio frequency beam forming network
05/02/1978US4087822 Radio frequency antenna having microstrip feed network and flared radiating aperture
03/1978
03/21/1978US4080605 Multi-beam radio frequency array antenna
03/21/1978US4080579 Stripline four port hybrid junction
02/1978
02/21/1978US4075581 Stripline quadrature coupler
02/07/1978US4072956 Multifrequency array using common phasors
01/1978
01/03/1978US4066970 Pulse shaper for coaxial cable system
12/1977
12/13/1977US4063249 Small broadband antenna having polarization sensitive reflector system
12/06/1977US4062010 Underground pipe detector
10/1977
10/18/1977US4054886 Receiving antenna having mirror symmetry and defined polarizations ion
09/1977
09/27/1977US4051476 Parabolic horn antenna with microstrip feed
09/13/1977US4048592 Arrangement for extracting divergence-measuring modes from a corrugated guide and tracking antenna incorporating same
08/1977
08/16/1977US4042935 Wideband multiplexing antenna feed employing cavity backed wing dipoles
08/09/1977US4041499 Coaxial waveguide antenna
06/1977
06/28/1977US4032922 Multibeam adaptive array
06/07/1977US4028707 Antenna for underground pipe detector
03/1977
03/29/1977US4015263 Dual polarized blade antenna
03/15/1977US4012742 Multimode loop antenna
01/1977
01/25/1977US4005379 R.F. power distribution network for phased antenna array
01/04/1977US4001837 Dual scan corner reflector antenna
01/04/1977US4001832 Vertical antenna having an off-center supply
12/1976
12/14/1976US3997900 Four beam printed antenna for Doopler application
11/1976
11/02/1976US3990078 Image element antenna array for a monopulse tracking system for a missile
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