| 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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| 04/05/1989 | EP0310414A2 Lens/polarizer/radome |
| 04/04/1989 | US4819227 Satellite communications system employing frequency reuse |
| 04/04/1989 | US4819007 Supporting structure for reflector-type microwave antennas |
| 03/21/1989 | US4814778 Large scan antenna with fixed main reflector and fixed feed, particularly for use at ultrahigh frequencies, carried on board a satellite and a satellite equipped with such an antenna |
| 03/14/1989 | US4812855 Dipole antenna with parasitic elements |
| 03/09/1989 | DE3728976A1 Cassegrain antenna for the microwave band |
| 03/08/1989 | EP0305518A1 Monocoque antenna structure |
| 03/07/1989 | US4811031 DBS antenna |
| 03/07/1989 | US4811029 Multi-reflector antenna |
| 03/01/1989 | EP0304722A1 Directional antenna for relay systems |
| 02/28/1989 | US4809011 Electronically steerable antenna apparatus |
| 02/21/1989 | US4806945 Receiving head end for polarized microwaves, parabolic aerial and receiving station equipped with such a receiving head end |
| 02/15/1989 | EP0303001A2 Horn antenna |
| 02/14/1989 | US4804972 Monocoque antenna structure |
| 02/14/1989 | US4804971 Guy system for parabolic reflecting antenna |
| 01/31/1989 | US4801946 Grid antenna |
| 01/18/1989 | CN1030500A Portable antenna device for satellite communucation |
| 12/29/1988 | WO1988010521A1 Collapsible receiving antenna |
| 12/28/1988 | EP0296742A2 Reflector type microwave antenna |
| 12/28/1988 | CA1247724A Microwave reflection survey equipment and technique |
| 12/27/1988 | US4794400 Angular-diversity radiating system for tropospheric-scatter radio links |
| 12/20/1988 | US4792813 Antenna system for hybrid communications satellite |
| 12/20/1988 | US4792811 Device for reflecting the electromagnetic waves of a polarization and a method of construction of said device |
| 12/14/1988 | EP0294413A1 Steerable beam antenna system using butler matrix. |
| 12/07/1988 | EP0293429A1 Composite antenna reflector with polarized subreflector |
| 11/29/1988 | US4788553 Doppler radar velocity measurement apparatus |
| 11/23/1988 | EP0291920A1 Airborne radar antenna |
| 11/17/1988 | WO1988009066A1 Microwave lens and array antenna |
| 11/17/1988 | EP0290969A2 Unfoldable antenna with two reflecting surfaces |
| 11/17/1988 | EP0290844A2 Directional antenna |
| 11/15/1988 | US4785310 Frequency selective screen having sharp transition |
| 11/15/1988 | US4785308 Antenna |
| 11/15/1988 | US4785266 Dielectric rod polarizer having wedge shape polarizing portions |
| 11/08/1988 | US4783665 Hybrid mode horn antennas |
| 11/08/1988 | US4783664 Shaped offset-fed dual reflector antenna |
| 11/08/1988 | US4783134 Microwave holograph device |
| 10/19/1988 | CN88210169U All-channel tv receiving antenna |
| 10/12/1988 | EP0104173B1 An electronically scanned antenna system having a linear array of yagi antennas |
| 10/11/1988 | US4777491 Angular-diversity radiating system for tropospheric-scatter radio links |
| 10/05/1988 | EP0284897A1 Dual reflector microwave directional antenna |
| 10/05/1988 | EP0284883A1 Dual reflector microwave directional antenna |
| 09/29/1988 | DE3804118A1 Horn antenna |
| 09/22/1988 | WO1988007268A1 Monocoque antenna structure |
| 09/20/1988 | US4772893 Switched steerable multiple beam antenna system |
| 09/13/1988 | US4771293 Dual reflector folding antenna |
| 09/13/1988 | CA1242024A1 Earth terminal for satellite communication systems |
| 09/06/1988 | US4769646 Antenna system and dual-fed lenses producing characteristically different beams |
| 08/31/1988 | EP0280379A2 Dielectric or magnetic medium loaded antenna |
| 08/24/1988 | EP0279050A1 Three resonator parasitically coupled microstrip antenna array element |
| 08/24/1988 | CN87211213U Receiving parabola for communication satellite tv ground station |
| 08/16/1988 | CA1240773A1 Wide angle multi-mode antenna |
| 08/10/1988 | EP0277206A1 Antenna system for hybrid communications satellite. |
| 08/10/1988 | EP0277189A1 Frequency selective screen having sharp transition. |
| 08/09/1988 | CA1240389A1 Adaptive antenna for reducing multipath fades |
| 07/21/1988 | DE3642735C1 Antenna array consisting of two log-periodic individual dipole antennas |
| 07/20/1988 | EP0275062A2 Multibeam antenna |
| 07/20/1988 | EP0274693A1 Communication antenna with a reflector |
| 07/12/1988 | US4757325 To amximize the gain-line product |
| 07/12/1988 | CA1239223A1 Adaptive array antenna |
| 07/05/1988 | US4755826 Bicollimated offset Gregorian dual reflector antenna system |
| 07/05/1988 | US4755825 Conical scan process in a radar antenna, radar antenna implementing such a process and use of such an antenna in a tracking radar |
| 07/05/1988 | US4755820 Antenna device |
| 07/05/1988 | US4755819 Reflector antenna and method of fabrication |
| 06/30/1988 | WO1988004837A1 Steerable beam antenna system using butler matrix |
| 06/30/1988 | WO1988004836A1 Indoor antenna |
| 06/28/1988 | CA1238714A1 Shaped beam antenna |
| 06/22/1988 | EP0271517A1 Array antenna. |
| 06/16/1988 | WO1988004480A1 Composite antenna reflector with polarized subreflector |
| 06/07/1988 | US4749997 Modular antenna array |
| 06/01/1988 | EP0268635A1 Reflector antenna with a self-supported feed. |
| 05/31/1988 | US4748451 Adjustable bracket mount |
| 05/25/1988 | EP0268363A1 A protective cover for an antenna feed |
| 05/25/1988 | CN87214266U Tv receiving antenna |
| 05/24/1988 | US4746867 For detection of objects buried in the ground |
| 05/11/1988 | CN87105620A Satellite communication system of using frequency-division multiplex |
| 05/04/1988 | CN87105569A Selective screen with the characteristics of quick change and transition |
| 05/03/1988 | US4742359 Antenna system |
| 05/03/1988 | US4742314 Solid state millimeter wave power combiner |
| 04/27/1988 | CN87105577A Wave-packet shaping network |
| 04/26/1988 | US4740791 Antenna with pseudo-toric coverage having two reflectors |
| 04/26/1988 | CA1235799A1 Parabola, antenna and manufacturing method for same |
| 04/26/1988 | CA1235781A1 Doppler radar velocity measurement apparatus |
| 03/30/1988 | EP0261699A2 Angular-diversity radiosystem for tropospheric-scatter radio links |
| 03/24/1988 | WO1988002189A1 Passive resonant halfwave antenna element for antennas operating in the vhf or uhf band and an antenna using these elements |
| 03/23/1988 | EP0260766A1 Primary receiving unit for polarized microwaves, parabolic antenna and receiving station comprising such a unit |
| 03/23/1988 | CN87206936U Ground antenna for receiving signals from satellite |
| 03/22/1988 | US4733245 Cavity-backed slot antenna |
| 03/16/1988 | CN87105573A Antenna system for hybrid-type communication satallite |
| 03/01/1988 | US4728961 Electromagnetic wave spatial filter with circular polarization and a Cassegrain antenna comprising such a filter |
| 02/25/1988 | WO1988001456A1 Satellite communications system employing frequency reuse |
| 02/25/1988 | WO1988001445A1 Antenna system for hybrid communications satellite |
| 02/25/1988 | WO1988001442A1 Frequency selective screen having sharp transition |
| 02/25/1988 | WO1988001441A1 Beam-forming network |
| 02/16/1988 | US4725847 Reflector antenna having sidelobe nulling assembly with metallic gratings |
| 02/11/1988 | WO1988001105A1 Modular antenna array |
| 02/03/1988 | CN87208675U Antenna for receiving satellite signal |
| 01/26/1988 | US4721966 Planar three-dimensional constrained lens for wide-angle scanning |
| 01/26/1988 | CA1232061A1 Shaped offset-fed dual reflector antenna |
| 01/20/1988 | EP0253425A2 Angular-diversity radiating system for tropospheric-scatter radio links |
| 01/07/1988 | EP0251818A2 Omnidirectional antenna assembly |