| Patents for H01Q 5 - Arrangements for simultaneous operation of aerials on two or more different wavebands (11,466) |
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| 12/27/1990 | EP0403910A1 Radiating, diplexing element |
| 12/27/1990 | EP0403894A2 Nested horn radiator assembly |
| 12/25/1990 | US4980694 Portable communication apparatus with folded-slot edge-congruent antenna |
| 12/20/1990 | DE3922042A1 Radio antenna whip for dual frequency operation - uses three section coaxial construction with modified central section |
| 12/20/1990 | CA2019181A1 Diplexing radiating element |
| 12/04/1990 | CA1277417C Transponder antenna |
| 11/22/1990 | EP0398554A2 Multiband gridded focal plane array antenna |
| 11/20/1990 | US4972199 Low cross-polarization radiator of circularly polarized radiation |
| 11/16/1990 | CA2014664A1 Multiband gridded focal plane array antenna |
| 11/06/1990 | US4968991 Multiband antenna system for use in motor vehicles |
| 11/01/1990 | WO1990013154A1 Dual frequency microwave feed assembly |
| 10/31/1990 | EP0394931A2 Annular slot antenna |
| 10/03/1990 | EP0390350A2 Low cross-polarization radiator of circularly polarized radiation |
| 09/13/1990 | DE4005982A1 Horizontal broad band antenna - has operation over 5 short wave bands with low noise |
| 08/21/1990 | CA1273071A1 Frequency selective screen having sharp transition |
| 07/11/1990 | EP0377155A1 Dual frequency radiating device |
| 06/27/1990 | EP0375415A2 Plane slot antennas and their use in motor vehicles |
| 06/27/1990 | EP0374371A1 Rod antenna for t.v. reception |
| 06/19/1990 | CA1270557A1 Dual frequency antenna feeding |
| 06/13/1990 | EP0372451A1 Multifrequency radiating device |
| 06/13/1990 | CN1008417B Selective screen with the characteristics of quick change and transition |
| 06/06/1990 | EP0371562A1 Coil antenna device |
| 05/09/1990 | EP0367656A1 System for the integration of IFF sum and difference channels in an antenna of a surveillance radar |
| 05/08/1990 | CA1268855A1 Multiband antenna |
| 04/04/1990 | EP0362079A2 Microstrip antenna |
| 03/28/1990 | EP0360692A1 Composite duplex antenna with circular polarisation |
| 03/27/1990 | US4912481 Compact multi-frequency antenna array |
| 03/21/1990 | EP0359361A1 Retractable cellular antenna |
| 03/20/1990 | US4910527 Configurable KU-band receiver for satellite antenna feed |
| 03/06/1990 | US4907006 Wide band antenna for mobile communications |
| 02/20/1990 | US4903037 Dual frequency microwave feed assembly |
| 02/08/1990 | DE3826777A1 Axial two-band antenna |
| 01/31/1990 | EP0353101A2 Automobile antenna |
| 01/10/1990 | EP0350364A1 Wideband receiving antenna |
| 01/10/1990 | EP0350308A2 A three-band antenna for vehicles |
| 01/03/1990 | EP0349499A2 Television antenna for interiors |
| 12/13/1989 | EP0345768A2 Antenna reconfigurable with respect to frequency, coverage and polarisation |
| 12/06/1989 | CN1006030B Antenna system for hybrid-type communication satallite |
| 11/09/1989 | DE3814382A1 Dual-frequency antenna |
| 10/26/1989 | DE3844541A1 Transceiver system for motor vehicles |
| 10/03/1989 | US4872211 Dual frequency launcher for circularly polarized antenna |
| 09/26/1989 | US4870426 Dual band antenna element |
| 09/13/1989 | EP0332139A2 Wide band antenna for mobile communications |
| 09/12/1989 | US4866454 Multi-spectral imaging system |
| 09/06/1989 | EP0186693B1 Telescopic antenna |
| 09/05/1989 | US4864317 Combination satellite antenna-solar collector |
| 09/05/1989 | US4864314 Dual band antennas with microstrip array mounted atop a slot array |
| 08/29/1989 | US4862187 Dual band feedhorn with two different dipole sets |
| 08/22/1989 | US4860019 Planar TV receiving antenna with broad band |
| 08/16/1989 | EP0327965A2 Multi-frequency antenna for satellite communications |
| 07/25/1989 | US4851858 Reflector antenna for operation in more than one frequency band |
| 07/20/1989 | DE3833288A1 Multi-band whip antenna |
| 07/12/1989 | EP0323726A2 Multi-frequency antenna |
| 07/11/1989 | US4847629 Retractable cellular antenna |
| 05/23/1989 | US4833483 Vertical antenna |
| 05/09/1989 | US4829315 Dual frequency feed apparatus |
| 05/02/1989 | US4827271 Dual frequency microstrip patch antenna with improved feed and increased bandwidth |
| 04/13/1989 | DE3732994A1 Multiple antenna combination for the 23cm/70cm/2m and 6m VHF/UHF bands, having a central supply point (feed point) |
| 04/11/1989 | US4821046 Dual band feed system |
| 04/04/1989 | US4819005 Concentric waveguides for a dual-band feed system |
| 04/04/1989 | CA1252196A1 Dual frequency feed |
| 03/14/1989 | US4812853 Thin metallic layer coated onto one side of strip dielectric; microwaves |
| 03/07/1989 | CA1250950A1 Telescopic antenna |
| 03/02/1989 | DE3727556A1 Antenna arrangement |
| 02/14/1989 | US4805232 For adorning the waist of pants |
| 01/31/1989 | US4801945 Low loss dual band satellite antenna feed |
| 01/24/1989 | US4800392 Integral laminar antenna and radio housing |
| 12/20/1988 | US4792813 Antenna system for hybrid communications satellite |
| 12/14/1988 | CN88203405U Wide-band dielectric television antenna |
| 11/29/1988 | US4788555 Combined solar and signal receptor device |
| 11/15/1988 | US4785310 Frequency selective screen having sharp transition |
| 11/15/1988 | US4785308 Antenna |
| 11/15/1988 | US4785306 Dual frequency feed satellite antenna horn |
| 11/08/1988 | US4783661 Dual-band circularly polarised antenna with hemispherical coverage |
| 11/01/1988 | US4782345 Transponder antenna |
| 10/25/1988 | CA1243773A1 Dichroic antenna structure |
| 10/04/1988 | US4775866 Two-frequency slotted planar antenna |
| 09/20/1988 | US4772890 Multi-band planar antenna array |
| 09/13/1988 | US4771291 Dual frequency microstrip antenna |
| 09/08/1988 | DE3706390A1 Telescopic antenna |
| 09/07/1988 | EP0281042A2 Multi-spectral imaging system |
| 08/24/1988 | CN87211386U Fully frequency channel planar tv receiving antenna |
| 08/23/1988 | US4766440 Triple frequency U-slot microstrip antenna |
| 08/10/1988 | EP0277206A1 Antenna system for hybrid communications satellite. |
| 08/10/1988 | EP0277189A1 Frequency selective screen having sharp transition. |
| 07/26/1988 | US4760404 Device and method for separating short-wavelength and long-wavelength signals |
| 07/19/1988 | US4758806 Antenna exciter for at least two different frequency bands |
| 07/13/1988 | EP0273923A1 Combined uplink and downlink satellite antenna feed network |
| 07/12/1988 | US4757323 Crossed polarization same-zone two-frequency antenna for telecommunications satellites |
| 06/30/1988 | WO1988004836A1 Indoor antenna |
| 06/29/1988 | CN86204681U Multi-functional frequency modulator |
| 06/08/1988 | EP0270209A2 Dual-band circularly polarised antenna with hemispherical coverage |
| 06/07/1988 | US4749996 Double tuned, coupled microstrip antenna |
| 05/31/1988 | US4748450 Vehicular multiband antenna feedline coupling device |
| 05/19/1988 | DE3639106A1 Combination antenna |
| 05/04/1988 | CN87105569A Selective screen with the characteristics of quick change and transition |
| 04/26/1988 | US4740795 Dual frequency antenna feeding with coincident phase centers |
| 04/26/1988 | US4740794 Connectorless antenna coupler |
| 04/06/1988 | EP0262590A2 Devices and method for separating short-wavelength and long-wavelength signals |
| 03/29/1988 | US4734703 Three-wave antenna for vehicle |