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