| Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128) |
|---|
| 02/12/1986 | EP0171149A1 Electronic tracking system for microwave antennas |
| 02/11/1986 | CA1200595A1 Monopulse radar antenna |
| 02/05/1986 | EP0170154A1 Cross-polarized dual-frequency antenna with the same area coverage for telecommunication satellites |
| 02/04/1986 | US4568944 Y-Shaped dipole antenna |
| 12/18/1985 | EP0164466A1 High-efficiency multibeam antenna |
| 12/10/1985 | US4558324 Multibeam lens antennas |
| 11/26/1985 | US4555708 Dipole ring array antenna for circularly polarized pattern |
| 11/26/1985 | US4555706 Simultaneous nulling in the sum and difference patterns of a monopulse radar antenna |
| 10/02/1985 | EP0156685A1 Anti-jamming process for an array antenna, and antenna using such a process |
| 10/02/1985 | EP0156604A1 A beam forming network |
| 10/01/1985 | US4544925 Assembly of main and auxiliary electronic scanning antennas and radar incorporating such an assembly |
| 09/24/1985 | US4543579 Circular polarization antenna |
| 09/17/1985 | CA1193715A1 Gamma feed microstrip antenna |
| 09/10/1985 | US4540988 Broadband multi-element antenna |
| 08/27/1985 | US4538153 Directivity diversity communication system with microstrip antenna |
| 08/13/1985 | US4535338 Multibeam antenna arrangement |
| 07/30/1985 | US4532519 Phased array system to produce, steer and stabilize non-circularly-symmetric beams |
| 07/23/1985 | US4531129 Multiple-feed luneberg lens scanning antenna system |
| 07/16/1985 | US4529990 Antenna system for a jamming transmitter |
| 07/16/1985 | US4529988 Travelling wave antenna with side lobe elimination |
| 07/10/1985 | EP0148136A1 Monopulse feeder for two separated frequency bands |
| 07/09/1985 | CA1190317A1 Primary source with frequency re-utilization |
| 06/25/1985 | US4525716 Technique for cancelling antenna sidelobes |
| 06/19/1985 | EP0145274A1 Array antenna system |
| 06/11/1985 | US4523198 Radio frequency lens antenna |
| 05/28/1985 | US4520362 Polarization ratiometry object detection system and method |
| 05/22/1985 | EP0141886A1 Monopulse detection systems |
| 05/15/1985 | EP0141281A2 Device for preventing a main beam parallax in a circularly polarized antenna camprising a curved reflector and an off-set primary radiating element |
| 05/14/1985 | US4517572 System for reducing blocking in an antenna switching matrix |
| 05/07/1985 | US4516128 Beam waveguide feeder |
| 05/07/1985 | US4516127 Three element low profile antenna |
| 04/23/1985 | US4513292 For operation over a range of frequencies |
| 03/26/1985 | US4507665 Primary source with frequency re-utilization |
| 03/19/1985 | US4506268 Log-periodic antenna |
| 03/05/1985 | US4503436 In an electromagnetic communication system |
| 03/05/1985 | US4503434 Lossless arbitrary output dual mode network |
| 02/26/1985 | US4501399 Hybrid monopulse/sequential lobing beamrider guidance |
| 02/12/1985 | US4499474 Slot antenna with face mounted baffle |
| 02/12/1985 | US4499473 Cross polarization compensation technique for a monopulse dome antenna |
| 02/12/1985 | US4499471 Reconfigurable dual mode network |
| 01/30/1985 | EP0132378A2 Multiple beam scanning radar system |
| 01/22/1985 | US4495504 Radio frequency antenna having a reflector with an edge in a pattern null region to reduce edge scattering |
| 01/15/1985 | US4494117 Dual sense, circularly polarized helical antenna |
| 01/08/1985 | US4492964 Groundplane mounted log-periodic antenna |
| 01/08/1985 | CA1180801A1 Microwave transmission device with multimode diversity combined reception |
| 01/02/1985 | EP0130154A2 Multi-shaped-beam reflector antenna |
| 12/27/1984 | EP0129333A2 Adaptive antenna array |
| 12/27/1984 | EP0128970A1 Four-port network for a monopulse-tracking microwave antenna |
| 12/25/1984 | US4490725 Log-periodic antenna |
| 12/25/1984 | US4490723 Parallel plate lens antenna |
| 12/18/1984 | US4489331 Two-band microwave antenna with nested horns for feeding a sub and main reflector |
| 12/18/1984 | US4489325 Electronically scanned space fed antenna system and method of operation thereof |
| 11/13/1984 | US4482897 Multibeam segmented reflector antennas |
| 11/07/1984 | EP0123870A1 Doppler radar velocity measurement apparatus |
| 10/16/1984 | CA1176368A1 Two-band microwave source and an antenna equipped with said source |
| 10/09/1984 | US4476470 Three horn E-plane monopulse feed |
| 09/25/1984 | US4473828 Microwave transmission device with multimode diversity combined reception |
| 09/18/1984 | CA1174760A1 Multimode ultrahigh-frequency source comprising a profiled obstacle |
| 09/11/1984 | US4471361 Phase reconfigurable beam antenna system |
| 08/28/1984 | US4468670 Antenna device for air traffic radar |
| 08/07/1984 | US4464666 Multiple reflector antenna |
| 08/07/1984 | US4464663 Dual polarized, high efficiency microstrip antenna |
| 07/25/1984 | EP0113985A2 Receiving or transmitting multiple beam array |
| 07/25/1984 | EP0113901A2 Mode filter |
| 07/17/1984 | US4460898 Four element antenna turnstile tracking system |
| 07/10/1984 | US4459596 Coaxial antenna configuration with high inter-element isolation |
| 07/03/1984 | US4458249 Multi-beam, multi-lens microwave antenna providing hemispheric coverage |
| 06/26/1984 | US4456913 Sub-array polarization control for a monopulse dome antenna |
| 05/23/1984 | EP0109322A1 Double reflector antenna for a tracking radar improving the target acquisition capability |
| 05/22/1984 | US4450451 Gimbal assembly for monopulse radar antenna |
| 05/16/1984 | EP0108094A1 Radiogoniometric device. |
| 04/25/1984 | EP0106494A2 Electronically scanned antenna |
| 04/17/1984 | US4443804 Modified difference mode coaxial antenna with flared aperture |
| 03/27/1984 | US4439773 Compact scanning beam antenna feed arrangement |
| 03/20/1984 | US4438437 Dual mode blade antenna |
| 03/20/1984 | CA1164088A1 Antenna feeder system |
| 03/20/1984 | CA1164087A1 Array antenna system |
| 02/29/1984 | EP0101533A1 Radar antenna |
| 02/08/1984 | EP0100123A2 A directive antenna element |
| 01/18/1984 | EP0098618A2 System for the electronical sector scanning of the beam of a monopulse radar antenna |
| 01/10/1984 | US4425567 Beam forming network for circular array antennas |
| 12/27/1983 | US4423392 Dual-mode stripline antenna feed performing multiple angularly separated beams in space |
| 12/13/1983 | US4420756 Multi-mode tracking antenna feed system |
| 12/13/1983 | CA1158766A1 Rectangular beam shaping antenna |
| 12/06/1983 | US4419670 Dual feed box horn antenna |
| 11/29/1983 | US4418349 Airport surveillance system |
| 11/15/1983 | US4415901 Low power beam switchable antenna arrangement |
| 11/10/1983 | WO1983003904A1 Radiogoniometric device |
| 11/09/1983 | EP0093234A1 Method of producing antenna tracking signals |
| 10/18/1983 | US4410894 Array phasing techniques for wide area coverage in a failure mode |
| 10/05/1983 | EP0090400A1 Surveillance radar aerial suited to elevation measurement |
| 09/14/1983 | EP0088528A1 Secondary surveillance radar system |
| 09/06/1983 | US4403221 Millimeter wave microstrip antenna |
| 08/24/1983 | EP0086558A1 Improvements in or relating to antenna array circuits |
| 08/23/1983 | US4400701 Common antenna for primary and secondary radar |
| 08/09/1983 | US4398200 Feed apertures with crosspolarization compensation for linear polarization |
| 08/02/1983 | US4396921 Matching section for multi-arm spiral antenna |
| 07/26/1983 | US4395714 Antenna array system usable for AM/FM receiver |
| 07/05/1983 | US4392139 Aircraft television antenna receiving system |
| 06/14/1983 | US4388626 Phased array antennas using frequency multiplication for reduced numbers of phase shifters |