| Patents for H01Q 25 - Aerials or aerial systems providing at least two radiating patterns (4,128) |
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| 06/01/1983 | EP0080319A1 Antenna assemblies |
| 04/06/1983 | EP0076213A2 Beam forming network for a multivibrator antenna array |
| 03/29/1983 | US4378559 Radar antenna system |
| 03/23/1983 | EP0074762A1 Dual mode blade antenna |
| 03/16/1983 | EP0074295A1 Passive microwave duplexer using semi-conductors |
| 03/15/1983 | US4376938 Wire grid microstrip antenna |
| 03/15/1983 | US4376937 Antenna for primary and secondary radars |
| 03/08/1983 | US4376281 Multimode array antenna |
| 02/16/1983 | EP0072316A1 Electronic scanning antenna with multiple ports and radar using such antenna |
| 02/08/1983 | CA1141012A1 Method an dsystem for tracking and object radiating a circularly or linearly polarized electromagnetic signal |
| 01/05/1983 | EP0068940A1 Frequency reuse primary active antenna |
| 12/21/1982 | US4365253 Antenna feeder system for a tracking antenna |
| 12/14/1982 | US4364050 Microstrip antenna |
| 12/14/1982 | CA1137624A1 Antenna with sum and error patterns |
| 11/23/1982 | US4360816 Phased array of six log-periodic dipoles |
| 11/23/1982 | US4360815 Bifocal reflector antenna and its configuration process |
| 11/17/1982 | EP0064694A1 Microwave antenna for a direct link, particularly in the millimetric range |
| 11/16/1982 | US4359742 Dual switch multimode array antenna |
| 11/16/1982 | US4359741 Lens antenna arrangement |
| 11/09/1982 | US4358771 Power distribution type antenna |
| 11/02/1982 | US4357612 Multimode ultrahigh-frequency source and antenna |
| 10/19/1982 | US4355314 Wide-field-of-view antenna arrangement |
| 10/06/1982 | EP0061576A1 Microwave communication transmission apparatus with multimode diversity combining reception |
| 10/05/1982 | US4353073 Antenna arrangement for a radar surveillance method for target locating with altitude acquisition |
| 10/05/1982 | US4353072 Circularly polarized radio frequency antenna |
| 09/14/1982 | US4349840 Apparatus for automatically steering an electrically steerable television antenna |
| 09/07/1982 | US4348679 Multi-mode dual-feed array radar antenna |
| 09/07/1982 | US4348678 Antenna with a curved lens and feed probes spaced on a curved surface |
| 09/07/1982 | CA1131351A1 Radio frequency energy antenna |
| 08/31/1982 | US4347516 Rectangular beam shaping antenna employing microstrip radiators |
| 08/17/1982 | US4345257 Primary radar antenna having a secondary radar (IFF) antenna integrated therewith |
| 08/11/1982 | EP0057538A2 Antenna device |
| 08/10/1982 | US4344077 Adaptive spatial microwave filter |
| 08/04/1982 | EP0057121A2 High-frequency dual-band feeder and antenna incorporating the same |
| 08/03/1982 | US4342997 Array modification that adds height capability to a 2D array radar |
| 07/20/1982 | US4340892 Doppler navigation antenna having automatic land-sea error correction |
| 07/20/1982 | CA1128198A1 Integrated antenna aperture |
| 06/22/1982 | US4336542 Method of and system for tracking an object radiating a circularly or linearly polarized electromagnetic signal |
| 06/22/1982 | US4336540 Radar system |
| 06/15/1982 | US4335388 Null control of multiple beam antenna |
| 05/25/1982 | US4332032 Adaptive hybrid antenna system |
| 05/04/1982 | US4328500 Integrated antenna array for radar equipment enabling the simultaneous generation of two or more different radiation patterns |
| 05/04/1982 | US4328498 Phased array antenna for satellite |
| 04/27/1982 | US4327417 Antenna scan pattern generator |
| 04/20/1982 | CA1122284A1 Two into three port phase shifting power divider |
| 03/30/1982 | US4322731 Disk-type ultra-high frequency antenna array with its supply device and the application thereof to angular deviation measurement radars |
| 03/23/1982 | US4321605 Array antenna system |
| 03/02/1982 | US4318107 Printed monopulse primary source for airport radar antenna and antenna comprising such a source |
| 02/23/1982 | US4317118 Symmetrical beam-forming network |
| 02/16/1982 | US4316192 Beam forming network for butler matrix fed circular array |
| 02/09/1982 | US4315266 Spiral slotted phased antenna array |
| 02/03/1982 | EP0045254A1 Compact dual-frequency microwave feed |
| 02/02/1982 | US4314250 Intermodulation product suppression by antenna processing |
| 01/12/1982 | US4310843 Electron beam controlled array antenna |
| 01/05/1982 | US4309710 Multi-lobe antenna having a disc-shaped Luneberg lens |
| 01/05/1982 | US4309709 Dual frequency aerial feed arrangements |
| 01/05/1982 | US4309706 Wideband direction-finding system |
| 12/29/1981 | US4308541 Antenna feed system for receiving circular polarization and transmitting linear polarization |
| 12/29/1981 | CA1115414A1 Dual beam line scanner for phased array applications |
| 12/23/1981 | EP0042203A1 Polarization ratiometry object detection system and method |
| 12/09/1981 | EP0041077A2 Antenna-feeding system for a tracking antenna |
| 12/08/1981 | US4305075 Conically scanning antenna system for tracking radars |
| 11/03/1981 | US4298877 Offset-fed multi-beam tracking antenna system utilizing especially shaped reflector surfaces |
| 10/20/1981 | US4296416 Dual mode log periodic monopole array |
| 10/13/1981 | CA1110761A1 Differential backlobe antenna array |
| 09/16/1981 | EP0035929A1 High frequency multimode feed, and antenna comprising such a feed |
| 09/07/1981 | EP0031336A4 Antenna system. |
| 09/01/1981 | US4287519 Multi-mode Luneberg lens antenna |
| 09/01/1981 | US4287518 Cavity-backed, micro-strip dipole antenna array |
| 08/25/1981 | US4286267 Directional antenna system with electronically controllable sweep of the beam direction |
| 08/18/1981 | US4284991 Common antenna for primary and secondary radar system |
| 08/12/1981 | EP0033676A1 Common antenna for primary radar and secondary radar |
| 08/11/1981 | US4283729 Multiple beam antenna feed |
| 08/11/1981 | US4283728 Five-horn cassegrain antenna |
| 07/21/1981 | CA1105610A1 Radio frequency antenna |
| 07/14/1981 | CA1105134A1 Subwavelength monopulse antenna |
| 07/08/1981 | EP0031336A1 Antenna system |
| 07/07/1981 | US4277787 Charge transfer device phased array beamsteering and multibeam beamformer |
| 06/17/1981 | EP0030272A1 Cassegrain antenna |
| 06/09/1981 | CA1102880A1 Method and apparatus to permit substantial cancellation of interference between a received first and second signal |
| 05/26/1981 | US4270129 Apparatus and method for realizing preselected free space antenna patterns |
| 05/20/1981 | EP0028969A1 Omnidirectional side lobe sum and difference beam forming network for a multielement antenna array and method for determining the weights thereof |
| 05/20/1981 | EP0028836A1 Antenna arrangement for an omnidirectional search radar for target location with height detection |
| 05/19/1981 | CA1101542A1 Waveguide receiving antenna |
| 05/05/1981 | US4266228 Circularly polarized crossed slot waveguide antenna array |
| 04/29/1981 | EP0027643A1 Directional antenna arrangement for a jammer tracking a target equipped with radar |
| 04/21/1981 | US4263598 Dual polarized image antenna |
| 03/31/1981 | CA1098619A1 Antenna system having modular coupling network |
| 03/25/1981 | EP0025739A1 Primary and secondary radar aerial |
| 03/24/1981 | US4258366 Multifrequency broadband polarized horn antenna |
| 03/17/1981 | US4257050 Large element antenna array with grouped overlapped apertures |
| 03/11/1981 | EP0024808A1 Dual frequency aerial feed arrangements |
| 02/24/1981 | US4253100 Inverse cassegrain antenna for multiple function radar |
| 01/20/1981 | US4246583 Multimode feed for a monopulse radar |
| 01/13/1981 | US4245223 Self-multiplexing antenna employing orthogonal beams |
| 01/07/1981 | EP0021252A1 Pillbox type radar antenna with integrated IFF antenna |
| 01/07/1981 | EP0021193A1 Combined antenna system |
| 01/06/1981 | US4243991 Antenna feed for scan-with-compensation tracking |
| 12/30/1980 | US4242578 Opto-electronic antenna system |
| 12/23/1980 | US4241353 Multimode monopulse feed and antenna incorporating same |