| Patents for H01Q 3 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an aerial or aerial system (21,949) |
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| 01/10/1989 | US4797682 Deterministic thinned aperture phased antenna array |
| 12/29/1988 | WO1988010523A2 Deterministic thinned aperture phased antenna array |
| 12/29/1988 | DE3813858A1 Antenna array having a large number of active array antenna elements which can be phase-modulated |
| 12/28/1988 | EP0296322A2 An airborne antenna and a system for mechanically steering an airborne antenna |
| 12/27/1988 | US4794401 Rotation mechanism for a waveguide feeder |
| 12/27/1988 | US4794400 Angular-diversity radiating system for tropospheric-scatter radio links |
| 12/27/1988 | US4794398 Multimode, multispectral scanning and detection |
| 12/20/1988 | US4792805 Multifunction active array |
| 12/20/1988 | CA1247234A1 Satellite tracking antenna system with a two-degree freedom gimballed mount |
| 12/14/1988 | EP0294465A1 Fiber-optic feed network using series/parallel connected light emitting opto-electronic components. |
| 12/14/1988 | EP0294413A1 Steerable beam antenna system using butler matrix. |
| 12/13/1988 | US4791428 Microwave receiving antenna array having adjustable null direction |
| 12/13/1988 | US4791427 Multimode, multispectral antenna |
| 12/13/1988 | US4791421 Transmit-receive module for phased-array antennas |
| 12/06/1988 | CA1246164A1 Digitally controlled wideband phase shifter |
| 11/29/1988 | CA1245753A1 Method and device for monitoring a mls station |
| 11/23/1988 | EP0291517A1 Phased array antenna system |
| 11/22/1988 | US4786912 Antenna stabilization and enhancement by rotation of antenna feed |
| 11/22/1988 | CA1245354A1 Adaptive antenna array |
| 11/17/1988 | WO1988009066A1 Microwave lens and array antenna |
| 11/15/1988 | US4785304 Phase scan antenna array |
| 11/03/1988 | WO1988008623A1 Multifunction active array |
| 11/03/1988 | WO1988008621A1 Low sidelobe phased array antenna using identical solid state modules |
| 11/02/1988 | EP0288988A1 Adaptive antenna system for high frequencies, especially for ultra-high frequencies |
| 10/25/1988 | US4780725 Rotary curtain antenna |
| 10/25/1988 | US4780721 Removing undesired directional interference jammer signals |
| 10/19/1988 | EP0287444A1 Device for optical control of a scanning antenna |
| 10/18/1988 | US4779097 Segmented phased array antenna system with mechanically movable segments |
| 10/12/1988 | EP0104173B1 An electronically scanned antenna system having a linear array of yagi antennas |
| 10/12/1988 | CN87210826U Tv antenna steering device |
| 10/11/1988 | US4777491 Angular-diversity radiating system for tropospheric-scatter radio links |
| 10/06/1988 | WO1988007786A2 Equal power amplifier system for active phase array antenna and method of arranging same |
| 10/06/1988 | WO1988007770A1 Plural level beam-forming network |
| 09/28/1988 | EP0284574A1 A rotator |
| 09/28/1988 | EP0284075A2 Radar system consisting of an array of interconnected elementary satellites |
| 09/27/1988 | US4774520 Primary microwave source for a conical scanning antenna and an antenna containing it |
| 09/27/1988 | CA1242487A1 Steered-beam satellite communication system |
| 09/22/1988 | WO1988006808A3 Three dimensional feed through lens with hemispherical coverage |
| 09/20/1988 | US4772893 Switched steerable multiple beam antenna system |
| 09/20/1988 | US4772892 Two-axis gimbal |
| 09/20/1988 | US4772890 Multi-band planar antenna array |
| 09/13/1988 | US4771289 For cancelling undesired signals received |
| 09/07/1988 | WO1988006808A2 Three dimensional feed through lens with hemispherical coverage |
| 09/07/1988 | EP0281290A1 Apparatus for manipulating radar drive assemblies |
| 09/07/1988 | EP0280912A1 Short wave antenna group |
| 08/30/1988 | US4768001 Microwave phase shifter with piezoelectric control |
| 08/25/1988 | WO1988006351A1 A transmit-receive means for phased-array active antenna system |
| 08/25/1988 | WO1988006295A1 Holographic radar |
| 08/23/1988 | US4766438 Three dimensional feed through lens with hemispherical coverage |
| 08/23/1988 | US4766437 Antenna apparatus having means for changing the antenna radiation pattern |
| 08/16/1988 | US4764771 Antenna feed network employing over-coupled branch line couplers |
| 08/16/1988 | US4764738 Agile beam control of optical phased array |
| 08/09/1988 | CA1240389A1 Adaptive antenna for reducing multipath fades |
| 08/03/1988 | EP0276817A2 Conformal array antenna |
| 08/03/1988 | CN88201225U Fan-shaped all-frequency channel tv receiving aerial |
| 08/02/1988 | USH514 Compact range for variable-zone measurements |
| 08/02/1988 | US4761827 Polarity switch for satellite television receiver |
| 07/28/1988 | WO1988005609A1 Slot antenna in circular waveguide |
| 07/26/1988 | US4760540 Adaptive interference cancelling system and method |
| 07/26/1988 | US4760402 Antenna system incorporated in the air spoiler of an automobile |
| 07/20/1988 | EP0274979A1 System for mechanically steering an airborne antenna |
| 07/20/1988 | EP0274693A1 Communication antenna with a reflector |
| 07/19/1988 | US4758840 Means for calibrating the elevation and azimuth angles of the scan axis of an antenna |
| 07/14/1988 | WO1988005215A1 Fiber-optic feed network using series/parallel connected light emitting opto-electronic components |
| 07/12/1988 | US4757318 Phased array antenna feed |
| 07/12/1988 | US4757316 Method and device for monitoring a station of a landing aid system of the MLS type |
| 07/12/1988 | CA1239223A1 Adaptive array antenna |
| 07/12/1988 | CA1239222A1 Grooved horn radiator with mode coupler |
| 07/06/1988 | CN87206685U Remote-controlled direction-guiding tv antenna |
| 07/06/1988 | CN87204203U Outdoor full frequeney channel tv antenna with electrical controlled direction-guiding device |
| 07/05/1988 | US4755829 System for radiating coherent microwave radiation at predetermined frequency |
| 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 |
| 06/30/1988 | WO1988004837A1 Steerable beam antenna system using butler matrix |
| 06/30/1988 | WO1988004836A1 Indoor antenna |
| 06/28/1988 | CA1238713A1 Antenna feed network |
| 06/22/1988 | EP0271778A2 Half circular 360o scanning radar array |
| 06/21/1988 | US4752969 Anti-multipath signal processor |
| 06/21/1988 | US4752968 Antenna diversity reception system for eliminating reception interferences |
| 06/16/1988 | WO1988004376A1 Drive and locking system |
| 06/15/1988 | EP0271266A2 Signal processing |
| 06/14/1988 | US4751513 Light controlled antennas |
| 06/07/1988 | US4750000 Ultra-broadband impedance matched electrically small self-complementary signal radiating structures with impedance-inverting feed for complementary pairs using thin wire elements |
| 06/07/1988 | US4749995 Phased array radar antenna system |
| 06/01/1988 | EP0121568B1 Continuous ferrite aperture for electronic scanning antennas |
| 05/25/1988 | CN87206959U Rotating device of outdoor tv antenna |
| 05/24/1988 | US4746926 Phase scan antenna |
| 05/18/1988 | EP0267184A1 Improvements in or relating to a transceiver interference cancellation system. |
| 05/11/1988 | EP0266567A1 Method for the surveillance and control of an antenna selector, and an antenna selector for carrying out the method |
| 05/11/1988 | CN87105620A Satellite communication system of using frequency-division multiplex |
| 05/10/1988 | US4743914 Space fed antenna system with squint error correction |
| 05/10/1988 | US4743911 Constant beamwidth antenna |
| 05/10/1988 | US4743909 Method and apparatus for setting direction of a parabolic antenna relative to a communicating satellite |
| 05/05/1988 | WO1988003333A1 Phased array antenna system |
| 05/05/1988 | WO1988003274A1 Scanning antenna having phase center diversity |
| 05/04/1988 | EP0266026A1 Tracking antenna mount |
| 05/03/1988 | US4742358 Multifrequency rotatable scanning prisms |
| 05/03/1988 | US4742355 Serpentine feeds and method of making same |
| 04/27/1988 | CN87210662U Direction-changable t.v. antenna |
| 04/27/1988 | CN87105577A Wave-packet shaping network |