| Patents for H01Q 21 - Aerial arrays or systems (25,127) |
|---|
| 09/01/1982 | EP0058893A1 Vertical support means for a plurality of devices rotating independently each from the other |
| 08/31/1982 | US4347517 Microstrip backfire antenna |
| 08/31/1982 | US4347516 Rectangular beam shaping antenna employing microstrip radiators |
| 08/11/1982 | EP0057538A2 Antenna device |
| 08/10/1982 | US4344169 Method of connecting two short-wave transmitters in parallel |
| 08/04/1982 | EP0056985A2 Device to improve the decoupling of antennae |
| 07/20/1982 | US4340891 Dual polarized base station receive antenna |
| 07/20/1982 | CA1128198A1 Integrated antenna aperture |
| 07/07/1982 | EP0055324A2 Monolithic microwave integrated circuit with integral array antenna |
| 07/06/1982 | US4338609 Short horn radiator assembly |
| 06/24/1982 | WO1982002119A1 Directional antenna with a plurality of elements |
| 06/22/1982 | US4336543 Electronically scanned aircraft antenna system having a linear array of yagi elements |
| 06/15/1982 | US4335388 Null control of multiple beam antenna |
| 06/15/1982 | US4335385 Stripline antennas |
| 06/09/1982 | EP0053512A1 Secondary radar antenna |
| 06/08/1982 | US4334225 Antenna system for locating a microwave signal source |
| 06/08/1982 | CA1125396A1 Microwave terminating structure |
| 05/26/1982 | EP0052231A1 Rotatable short-wave antenna |
| 05/19/1982 | EP0051671A1 Circularly polarized hemispheric overage flush antenna |
| 05/11/1982 | US4329692 Primary radar antenna having a secondary radar antenna integrated therewith |
| 05/11/1982 | US4329690 Multiple shipboard antenna configuration |
| 05/04/1982 | US4328500 Integrated antenna array for radar equipment enabling the simultaneous generation of two or more different radiation patterns |
| 04/20/1982 | US4326203 Corner fed electric non rectangular microstrip dipole antennas |
| 04/20/1982 | CA1122284A1 Two into three port phase shifting power divider |
| 04/07/1982 | EP0048817A1 Rod-excited waveguide slot antenna |
| 03/30/1982 | US4322731 Disk-type ultra-high frequency antenna array with its supply device and the application thereof to angular deviation measurement radars |
| 03/24/1982 | EP0048195A1 Microwave directional coupler between rectangular waveguide and triplate strip line |
| 03/24/1982 | EP0048190A1 Non-dispersive antenna array and its application to electronic scanning |
| 03/23/1982 | US4321605 Array antenna system |
| 03/17/1982 | EP0047684A1 Missile antenna and missile provided with such an antenna |
| 03/16/1982 | US4320402 Multiple ring microstrip antenna |
| 03/10/1982 | EP0046996A1 Antenna systems |
| 03/09/1982 | US4319249 Method and antenna for improved sidelobe performance in dipole arrays |
| 03/09/1982 | CA1119703A1 Aerial radio-navigational beacon |
| 02/23/1982 | US4317122 Duopyramid circularly polarized broadcast antenna |
| 02/16/1982 | US4316194 Hemispherical coverage microstrip antenna |
| 02/09/1982 | US4315264 Circularly polarized antenna with circular arrays of slanted dipoles mounted around a conductive mast |
| 02/02/1982 | US4314246 Device for transmitting radiophonic signals in secondary radar equipment |
| 01/27/1982 | EP0044779A1 Folded dipoles in tri-plate technology for very high frequencies, and arrays comprising the same |
| 01/26/1982 | US4313120 Non-dissipative load termination for travelling wave array antenna |
| 01/13/1982 | EP0043591A1 Antenna |
| 01/05/1982 | US4309706 Wideband direction-finding system |
| 12/29/1981 | US4308541 Antenna feed system for receiving circular polarization and transmitting linear polarization |
| 12/15/1981 | CA1114497A1 Phased array antenna with extinguishable phase shifters |
| 12/08/1981 | US4305078 Multifrequency series-fed edge slot antenna |
| 11/26/1981 | WO1981003398A1 Circularly polarized hemispheric coverage flush antenna |
| 11/17/1981 | US4301458 Antenna array with impedance matching using mutual coupling |
| 11/17/1981 | US4301457 Antenna employing curved parasitic end-fire directors |
| 11/03/1981 | US4298872 Sidelobe blanking system |
| 10/27/1981 | US4297711 Omnidirectional receiving antenna |
| 10/27/1981 | US4297708 Apparatus and methods for correcting dispersion in a microwave antenna system |
| 10/27/1981 | US4297707 Multiple omnidirectional antenna |
| 10/27/1981 | US4297706 Circularly polarized slotted pylon antenna |
| 10/20/1981 | US4296416 Dual mode log periodic monopole array |
| 10/13/1981 | US4295221 Method and apparatus at one-way or two-way information link to effect interference suppression |
| 10/13/1981 | CA1110761A1 Differential backlobe antenna array |
| 10/13/1981 | CA1110722A1 Feeder arrangement for an aerial for inter alia satellite signals |
| 10/06/1981 | US4293858 Polarization agile meander line array |
| 09/22/1981 | US4291312 Dual ground plane coplanar fed microstrip antennas |
| 09/22/1981 | US4291311 Dual ground plane microstrip antennas |
| 09/08/1981 | US4288795 Anastigmatic three-dimensional bootlace lens |
| 09/08/1981 | CA1108753A1 Apparatus and method for improving r.f. isolation between adjacent antennas |
| 09/01/1981 | US4287518 Cavity-backed, micro-strip dipole antenna array |
| 08/25/1981 | US4286268 Adaptive array with optimal sequential gradient control |
| 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 |
| 07/29/1981 | EP0032604A1 Radar reflector |
| 07/21/1981 | CA1105611A1 Yagi-type antennas and method |
| 07/14/1981 | US4278980 Antenna input circuit for radio receiver |
| 07/07/1981 | US4277788 Direction determining apparatus responsive to electromagnetic radiation |
| 06/23/1981 | US4275397 Interference canceling random access discrete address multiple access system |
| 06/02/1981 | US4271413 Null mask |
| 05/26/1981 | US4270129 Apparatus and method for realizing preselected free space antenna patterns |
| 05/19/1981 | US4268832 Multipath discriminating antenna system |
| 05/19/1981 | CA1101542A1 Waveguide receiving antenna |
| 05/06/1981 | EP0028185A1 Radar antenna comprising elements with a quasi-omnidirectional radiating pattern |
| 05/06/1981 | EP0028018A1 An improved phased array antenna system |
| 05/05/1981 | US4266228 Circularly polarized crossed slot waveguide antenna array |
| 05/05/1981 | US4266226 Sidelobe discriminator |
| 04/28/1981 | US4264908 Adaptive polarization separation |
| 04/21/1981 | US4263598 Dual polarized image antenna |
| 04/07/1981 | US4260988 Stripline antenna for microwaves |
| 04/07/1981 | CA1099014A1 Microwave antenna |
| 04/07/1981 | CA1099013A1 Antenna coupling network with element pattern shift |
| 03/31/1981 | US4259674 Phased array antenna arrangement with filtering to reduce grating lobes |
| 03/25/1981 | EP0025739A1 Primary and secondary radar aerial |
| 03/17/1981 | US4257050 Large element antenna array with grouped overlapped apertures |
| 03/10/1981 | US4255752 Lightweight composite slotted-waveguide antenna and method of manufacture |
| 02/11/1981 | EP0023606A1 Antenna system for locating the position of a microwave signal source |
| 02/10/1981 | US4250509 Circularly polarized zigzag antenna |
| 02/10/1981 | US4250507 Directional circular loop beam antenna |
| 02/03/1981 | US4249183 Periscope arrangement with protection against parasitic radiation |
| 01/27/1981 | US4247858 Antennas for use with optical and high-frequency radiation |
| 01/07/1981 | EP0021862A1 Device for transmitting radio communication signals in a secondary radar system |
| 01/07/1981 | EP0021251A1 Pillbox-radar antenna with integrated IFF antenna |
| 01/07/1981 | EP0021193A1 Combined antenna system |
| 01/06/1981 | CA1093207A1 Satellite communications transmission systems |
| 12/30/1980 | US4242685 Slotted cavity antenna |
| 12/30/1980 | US4242578 Opto-electronic antenna system |