| Patents for H01Q 19 - Combinations of primary active aerial elements and units with secondary devices, e.g. with quasi-optical devices, for giving the aerial a desired directional characteristic (10,176) |
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| 07/10/1990 | US4940990 Intrabuilding wireless communication system |
| 07/04/1990 | EP0376701A2 Flat-plate patch antenna |
| 07/04/1990 | CN1008675B Wave-packet shaping network |
| 07/03/1990 | US4939526 Antenna system having azimuth rotating directive beam with selectable polarization |
| 07/03/1990 | US4939523 Aircraft radar antenna |
| 06/28/1990 | WO1990007199A1 Focussing device for a microwave antenna |
| 06/26/1990 | US4937425 Method of making a polarizing parabolic dish antenna reflector |
| 06/22/1990 | CA2004724A1 Antenna system having azimuth rotating directive beam with selectable polarization |
| 06/20/1990 | CA2005973A1 Focussing device for a microwave antenna |
| 06/19/1990 | US4935747 Axial mode helical antenna |
| 06/13/1990 | EP0372023A1 Multimode dielectric-loaded multi-flare antenna |
| 06/13/1990 | CN1008417B Selective screen with the characteristics of quick change and transition |
| 06/12/1990 | US4933680 Microstrip antenna system with multiple frequency elements |
| 06/07/1990 | DE3840451A1 Lens antenna |
| 06/05/1990 | US4931808 Embedded surface wave antenna |
| 05/31/1990 | WO1990006004A1 Offset parabolic reflector antenna |
| 05/31/1990 | WO1990006002A1 Microwave signal receiving apparatus |
| 05/31/1990 | DE3933682A1 Multiple receiver aerial for satellites - has hollow dish shape with hollow mirror and several receiver modules at all focal points |
| 05/29/1990 | US4929956 Optical beam former for high frequency antenna arrays |
| 05/16/1990 | EP0368121A1 Electronically scanned antenna |
| 05/14/1990 | CA2002002A1 Microwave signal receiving apparatus |
| 05/02/1990 | CN1041855A Satellite tv receiving system with high dynamic range composite signal channel |
| 04/24/1990 | CA1268249A1 Wide sweep antenna mounted on a satellite and equipped with a main reflector and fixed sources, especially for microwave operation |
| 04/17/1990 | US4918411 For passing an RF signal |
| 04/10/1990 | US4916459 Parabolic antenna dish |
| 04/04/1990 | EP0361417A2 Microstrip antenna system with multiple frequency elements |
| 04/04/1990 | EP0361294A1 Revolution reflector antenna |
| 04/03/1990 | US4914443 Angle diversity signal separator using mode conversion |
| 03/29/1990 | DE3929922A1 Microwave probe for moisture content measurement - contains material of dielectric constant similar to material to be measured, to increase accuracy |
| 03/28/1990 | CN1007396B Satellite communication system of using frequency-division multiplex |
| 03/22/1990 | WO1990003049A1 Optical beam former for high frequency antenna arrays |
| 03/14/1990 | EP0358280A2 Microwave antenna |
| 03/06/1990 | US4907010 Directionally sensitive receiving antenna employing gyrotropic material |
| 03/06/1990 | US4907006 Wide band antenna for mobile communications |
| 03/01/1990 | DE3829370A1 Doppelerreger fuer spiegelantennen zur erzeugung zweier eng benachbarter strahlungskeulen Double agent for mirror antennas for generation of two closely spaced radiation lobes |
| 02/27/1990 | US4905014 Microwave phasing structures for electromagnetically emulating reflective surfaces and focusing elements of selected geometry |
| 02/22/1990 | WO1990001813A1 Antennas |
| 02/13/1990 | US4901369 Microwave transmitter/receiver apparatus |
| 02/13/1990 | US4901086 Lens/polarizer radome |
| 02/08/1990 | WO1990001223A1 Reflector antenna with off set feeding |
| 02/07/1990 | EP0353846A2 A method of producing an antenna system having main and auxiliary reflecting surfaces |
| 02/06/1990 | US4899164 Slot coupled microstrip constrained lens |
| 01/31/1990 | EP0352976A2 Angle diversity signal separator using mode conversion |
| 01/30/1990 | US4897664 Image plate/short backfire antenna |
| 01/30/1990 | US4897663 Horn antenna with a choke surface-wave structure on the outer surface thereof |
| 01/23/1990 | US4896163 Microwave receiving device |
| 01/17/1990 | CN2051358U Single-aerial multipolarization frequency modulated continous-wave radar |
| 01/11/1990 | DE3823056A1 Directional antenna |
| 01/10/1990 | EP0263158B1 Wideband horn antenna |
| 12/20/1989 | CN1038170A Single antenna, multipolarization, frequency modulated continuous-wave radar |
| 12/13/1989 | EP0346125A2 Microwave integrated apparatus for satellite broadcasting receiver |
| 12/13/1989 | EP0346105A2 Spacecraft antenna system |
| 12/12/1989 | US4887091 Broadcasting receiver for vehicles |
| 12/06/1989 | CN1006030B Antenna system for hybrid-type communication satallite |
| 11/22/1989 | CN2048244U Mixer compound aerials with dielectric balance |
| 11/08/1989 | EP0340429A1 Electronically scanned antenna |
| 11/08/1989 | EP0340404A2 Monopole/L-shaped parasitic elements for circularly/eliptically polazized wave transceiving |
| 11/07/1989 | US4879711 Satellite communications system employing frequency reuse |
| 11/07/1989 | CA1262773A1 Horn antenna with a choke surface-wave structure on the outer surface thereof |
| 10/31/1989 | US4878059 Farfield/nearfield transmission/reception antenna |
| 10/25/1989 | CN1036668A Antenna which is electronically reconfigurable in transmission |
| 10/24/1989 | US4876554 Pillbox antenna and antenna assembly |
| 10/18/1989 | EP0337841A1 Broadband transmitting antenna loop with asymmetric feed and array of a plurality of these loops |
| 10/04/1989 | EP0335077A1 Tri-reflector antenna system with cross-polarization suppression |
| 09/21/1989 | WO1989008932A1 A solid dielectric lens aerial |
| 09/20/1989 | EP0333166A1 Electronically reconformable transmitting antenna |
| 09/13/1989 | EP0332139A2 Wide band antenna for mobile communications |
| 09/06/1989 | EP0331248A1 Antenna system with adjustable beam width and beam orientation |
| 09/05/1989 | US4864320 Monopole/L-shaped parasitic elements for circularly/elliptically polarized wave transceiving |
| 08/30/1989 | EP0330303A2 End fire aerial |
| 08/24/1989 | WO1989007838A1 Microstrip antenna |
| 08/23/1989 | EP0329390A2 Structure of primary radiator |
| 08/22/1989 | CA1258709A1 Antenna with a main reflector and a subreflector |
| 08/22/1989 | CA1258707A1 Antenna system |
| 08/16/1989 | CN2043007U Optimization gauss antenna |
| 08/08/1989 | US4855751 High-efficiency multibeam antenna |
| 08/08/1989 | US4855750 Dipole exciter for an antenna |
| 07/27/1989 | DE3801301A1 Fresnel zone plate (Fresnel lens) as a reflector for a microwave transmitting/receiving antenna |
| 07/25/1989 | US4851858 Reflector antenna for operation in more than one frequency band |
| 07/19/1989 | CN1034095A Wide freguency band loop parasitic array antenna |
| 07/18/1989 | US4849765 Low-profile, printed circuit board antenna |
| 07/18/1989 | CA1257694A1 Antenna system |
| 07/13/1989 | WO1989006446A1 Multimode dielectric-loaded multi-flare antenna |
| 07/11/1989 | US4847628 Frequency independent constant beamwidth directional lens antenna for very wideband and multi-channel electromagnetic communications |
| 07/05/1989 | EP0322498A2 Primary radiator for parabolic antenna |
| 06/27/1989 | CA1256556A1 Aircraft skin antenna |
| 06/27/1989 | CA1256536A1 Polarization sensitive electromagnetic ware reflecting device and method for producing said device |
| 06/21/1989 | CN2039878U V-u common antenna for tv with optimum structure |
| 05/30/1989 | US4835538 Three resonator parasitically coupled microstrip antenna array element |
| 05/24/1989 | DE3738705A1 Arrangement for varying the lobe width of a microwave antenna |
| 05/23/1989 | US4833484 Earth terminal for satellite communication |
| 05/03/1989 | EP0313623A1 Microwave lens and array antenna |
| 05/02/1989 | US4827277 Antenna with a main reflector and a subreflector |
| 05/02/1989 | US4827270 Antenna device |
| 05/02/1989 | US4827268 Beam-forming network |
| 04/25/1989 | US4825222 Omnidirectional antenna with hollow point source feed |
| 04/25/1989 | US4825221 Directly emitting dielectric transmission line |
| 04/25/1989 | US4825218 Reflector antenna for telecommunications |
| 04/25/1989 | US4825216 High efficiency optical limited scan antenna |
| 04/19/1989 | EP0311919A2 Satellite communications system employing frequency reuse |