| Patents for H01Q 13 - Waveguide horns or mouths; Slot aerials; Leaky-waveguide aerials; Equivalent structures causing radiation along the transmission path of a guided wave (15,760) |
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| 03/14/1990 | EP0358280A2 Microwave antenna |
| 03/14/1990 | EP0167574B1 Transition between a continuous and a corrugated circular waveguides for efficient launch of signals in two frequency bands |
| 03/08/1990 | WO1990002427A1 Antenna lamination technique |
| 03/06/1990 | US4907008 Antenna for transmitting circularly polarized television signals |
| 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 |
| 02/28/1990 | EP0355898A1 A planar array antenna, comprising coplanar waveguide printed feed lines cooperating with apertures in a ground plane |
| 02/27/1990 | US4905013 Fin-line horn antenna |
| 02/27/1990 | CA1266325A1 Microwave antenna |
| 02/20/1990 | US4903038 Horn antenna arrangement |
| 02/20/1990 | US4903037 Dual frequency microwave feed assembly |
| 02/20/1990 | US4902988 Control for flexible probe |
| 02/13/1990 | US4901084 Object detection and location system |
| 02/06/1990 | US4899165 Variable circular polarization antenna having parasitic Z-shaped dipole |
| 01/30/1990 | US4897663 Horn antenna with a choke surface-wave structure on the outer surface thereof |
| 01/23/1990 | US4896163 Microwave receiving device |
| 01/16/1990 | US4894661 Fish school detecting method or apparatus |
| 01/16/1990 | US4894623 Compact tunable RF generator using a current carrying diffraction grating |
| 01/10/1990 | EP0263158B1 Wideband horn antenna |
| 01/09/1990 | US4893129 Planar array antenna |
| 01/03/1990 | EP0349069A1 Dual polarised phased array antenna |
| 12/26/1989 | US4890118 Compensated microwave feed horn |
| 12/26/1989 | US4890117 Antenna and waveguide mode converter |
| 12/12/1989 | US4887090 Vehicle antenna with shiftable gain patterns |
| 12/12/1989 | US4887089 Planar antenna for vehicles |
| 12/07/1989 | DE3917138A1 Ebene antenne Antenna plane |
| 12/05/1989 | US4885593 Feeds for compact ranges |
| 11/29/1989 | EP0343322A2 Notch antenna with microstrip feed |
| 11/28/1989 | CA1263452A1 Rotating slot antenna arrangement for microwave oven |
| 11/22/1989 | CN2048244U Mixer compound aerials with dielectric balance |
| 11/21/1989 | CA1263181A1 Electromagnetically coupled microstrip antennas having feeding patches capacitively coupled to feedlines |
| 11/15/1989 | EP0342175A2 Dual-polarized printed circuit antenna having its elements, including gridded printed circuit elements, capacitively coupled to feedlines |
| 11/07/1989 | CA1262773A1 Horn antenna with a choke surface-wave structure on the outer surface thereof |
| 11/02/1989 | WO1989010637A1 Internally mounted broadband antenna |
| 11/02/1989 | EP0339629A2 Internally mounted broadband antenna |
| 10/31/1989 | US4878061 Broadband wide flare ridged microwave horn antenna |
| 10/31/1989 | US4878060 Microwave plane antenna with suspended substrate system of lines and method for manufacturing a component |
| 10/31/1989 | US4878059 Farfield/nearfield transmission/reception antenna |
| 10/31/1989 | CA1262573A1 Microstrip antenna bulk load |
| 10/24/1989 | US4876552 Internally mounted broadband antenna |
| 10/10/1989 | US4873534 Hybrid mode feed horn having funnel-shaped horn flange with grooved conical inner surface |
| 10/10/1989 | US4873529 Coplanar patch antenna |
| 10/05/1989 | DE3809927A1 Asymmetric horn antenna |
| 10/03/1989 | US4872211 Dual frequency launcher for circularly polarized antenna |
| 09/26/1989 | CA1261060A1 Planar antenna with patch radiators |
| 09/26/1989 | CA1260609A1 Wide bandwidth multiband feed system with polarization diversity |
| 09/20/1989 | EP0332898A1 Wind shield for motor vehicles |
| 09/13/1989 | EP0332139A2 Wide band antenna for mobile communications |
| 09/12/1989 | US4866453 Vehicle slot antenna with parasitic slot |
| 08/30/1989 | EP0330303A2 End fire aerial |
| 08/29/1989 | US4862187 Dual band feedhorn with two different dipole sets |
| 08/23/1989 | EP0329079A2 Slotted waveguide Antenna |
| 08/22/1989 | CA1258708A1 Multidirectional feed and flush-mounted surface wave antenna |
| 08/15/1989 | US4857938 Planar antenna |
| 08/09/1989 | CN1034647A 分布天线系统 Distributed antenna system |
| 08/08/1989 | US4855749 Opto-electronic vivaldi transceiver |
| 08/02/1989 | EP0325702A1 Microstrip antenna |
| 08/01/1989 | US4853704 Notch antenna with microstrip feed |
| 07/25/1989 | US4851857 High-power, end-fed, non-coaxial UHF-TV broadcast antenna |
| 07/18/1989 | US4849761 Multi-mode feed system for a monopulse antenna |
| 07/13/1989 | WO1989006446A1 Multimode dielectric-loaded multi-flare antenna |
| 07/12/1989 | EP0323664A2 Coplanar patch antenna |
| 07/11/1989 | US4847574 Wide bandwidth multiband feed system with polarization diversity |
| 07/05/1989 | EP0322954A2 Horn antenna arrangement |
| 07/04/1989 | US4845508 Electric wave device and method for efficient excitation of a dielectric rod |
| 06/28/1989 | EP0322128A2 Leaky cables |
| 06/28/1989 | EP0322109A2 Distributed antenna system |
| 06/27/1989 | US4843403 Broadband notch antenna |
| 06/27/1989 | US4843353 Dielectric slab transistions and power couplers |
| 06/27/1989 | CA1256557A1 Sandwich-wire antenna |
| 06/20/1989 | US4841308 Slotted waveguide antenna assembly |
| 06/14/1989 | EP0319753A1 Exciting or feeding system for a parabolic antenna |
| 05/30/1989 | US4835543 Dielectric slab antennas |
| 05/30/1989 | US4835541 Near-isotropic low-profile microstrip radiator especially suited for use as a mobile vehicle antenna |
| 05/30/1989 | US4835539 Broadbanded microstrip antenna having series-broadbanding capacitance integral with feedline connection |
| 05/30/1989 | US4835538 Three resonator parasitically coupled microstrip antenna array element |
| 05/30/1989 | US4835500 Dielectric slab optically controlled devices |
| 05/23/1989 | US4833478 Automatic direction finder antenna array |
| 05/10/1989 | EP0315141A1 Excitation arrangement of a circular polarised wave with a patch antenna in a waveguide |
| 05/09/1989 | US4829314 Microwave plane antenna simultaneously receiving two polarizations |
| 05/09/1989 | US4829313 Drive system and filament for a twistable septum in a feedhorn |
| 05/09/1989 | US4829312 Slotted waveguide antenna assembly |
| 05/09/1989 | US4829309 Planar antenna |
| 05/03/1989 | DE3735630A1 Arrangement for exciting an H21 wave in a coaxial line |
| 05/02/1989 | US4827266 Antenna with lumped reactive matching elements between radiator and groundplate |
| 04/25/1989 | US4825221 Directly emitting dielectric transmission line |
| 04/25/1989 | US4825219 Slot antenna in circular waveguide |
| 04/20/1989 | DE3834075A1 Window antenna |
| 04/18/1989 | CA1252883A1 Primary radiator for circularly polarized wave |
| 04/11/1989 | US4821041 Patch antenna |
| 04/11/1989 | US4821040 Circular microstrip vehicular rf antenna |
| 04/06/1989 | DE3731918A1 Arrangement for exciting an H21 wave in a round waveguide |
| 04/04/1989 | CA1252195A1 Electronic tracking system for microwave antennas |
| 03/28/1989 | US4816838 Portable receiving antenna system |
| 03/28/1989 | US4816837 Automobile antenna system |
| 03/28/1989 | US4816835 Planar antenna with patch elements |
| 03/22/1989 | EP0308111A1 Radiating coaxial cable with improved flame retardancy |
| 03/15/1989 | EP0307351A1 Microwave horn antenna |
| 03/14/1989 | US4812853 Thin metallic layer coated onto one side of strip dielectric; microwaves |
| 03/08/1989 | EP0118537B1 Method for fabricating corrugated microwave components |