| 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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| 05/28/1981 | WO1981001486A1 Electronic scanning device in the biaising plane |
| 05/26/1981 | US4270129 Apparatus and method for realizing preselected free space antenna patterns |
| 05/26/1981 | CA1101989A1 Directive antenna |
| 05/26/1981 | CA1101981A1 Beam forming system |
| 05/20/1981 | EP0028969A1 Omnidirectional side lobe sum and difference beam forming network for a multielement antenna array and method for determining the weights thereof |
| 05/19/1981 | US4268832 Multipath discriminating antenna system |
| 05/19/1981 | US4268831 Antenna for scanning a limited spatial sector |
| 05/19/1981 | US4268829 Steerable null antenna processor with gain control |
| 05/19/1981 | CA1101541A2 Electronically scanned antenna |
| 05/06/1981 | EP0028018A1 An improved phased array antenna system |
| 04/29/1981 | EP0027643A1 Directional antenna arrangement for a jammer tracking a target equipped with radar |
| 04/21/1981 | US4263600 Wide-band, phase scanned antenna |
| 04/21/1981 | US4263539 Automatic antenna positioning apparatus |
| 04/21/1981 | US4263521 Differential sample and hold circuit |
| 04/08/1981 | EP0026453A1 Device with a resolver for radar antennas |
| 04/07/1981 | US4260994 Antenna pattern synthesis and shaping |
| 04/07/1981 | US4260992 Radio navigation antenna system for aircraft |
| 04/07/1981 | CA1099013A1 Antenna coupling network with element pattern shift |
| 04/07/1981 | CA1099007A1 Resolving angular ambiguity |
| 03/31/1981 | US4259741 Satellite relay system |
| 03/31/1981 | US4259674 Phased array antenna arrangement with filtering to reduce grating lobes |
| 03/31/1981 | CA1098619A1 Antenna system having modular coupling network |
| 03/24/1981 | US4258365 Around-the-mast rotary annular antenna feed coupler |
| 03/24/1981 | US4258363 Phased array radar |
| 03/18/1981 | EP0025265A1 Antenna arrangement |
| 03/17/1981 | US4257050 Large element antenna array with grouped overlapped apertures |
| 03/17/1981 | US4257048 Antenna system to reduce fading caused by multipath transmission |
| 03/10/1981 | US4255791 Signal processing system |
| 03/10/1981 | US4255751 Feed mechanism for a geodesic lens |
| 03/03/1981 | US4254421 Integrated confocal electromagnetic wave lens and feed antenna system |
| 02/24/1981 | US4253101 Power transfer ripple reduction method and means for rotary annular loop RF coupler |
| 02/24/1981 | US4253100 Inverse cassegrain antenna for multiple function radar |
| 02/24/1981 | US4253098 Radar systems |
| 02/10/1981 | US4250508 Scanning beam antenna arrangement |
| 02/10/1981 | US4250506 Sidelobe discriminator |
| 02/03/1981 | CA1095165A1 Electronically scanned antenna |
| 01/27/1981 | US4247858 Antennas for use with optical and high-frequency radiation |
| 01/27/1981 | US4247857 Method for controlling an antenna of an earth station for telecommunication via satellites |
| 01/21/1981 | EP0022656A2 Directivity-controllable antenna system |
| 01/20/1981 | US4246585 Subarray pattern control and null steering for subarray antenna systems |
| 01/13/1981 | US4245223 Self-multiplexing antenna employing orthogonal beams |
| 01/06/1981 | US4243991 Antenna feed for scan-with-compensation tracking |
| 01/06/1981 | US4243990 Integrated multiband array antenna |
| 01/06/1981 | CA1093207A1 Satellite communications transmission systems |
| 12/30/1980 | US4242578 Opto-electronic antenna system |
| 12/23/1980 | US4241352 Feed network scanning antenna employing rotating directional coupler |
| 12/23/1980 | US4241351 Array antenna controller |
| 12/09/1980 | US4238802 Differential drive rolling arc gimbal |
| 12/09/1980 | US4238798 Stripline antennae |
| 12/09/1980 | US4238797 Multi-beam antenna controller |
| 12/02/1980 | US4237465 Map plate for the adjustment of angle elevation of an antenna |
| 12/02/1980 | US4237464 Radar antenna employing phase shifted collinear dipoles |
| 11/25/1980 | US4236158 Steepest descent controller for an adaptive antenna array |
| 11/12/1980 | EP0018878A1 Airborne IFF system having a radar and an interrogation antenna |
| 11/11/1980 | US4233606 Frequency translating phase conjugation circuit for active retrodirective antenna array |
| 11/04/1980 | US4232320 Mount for earth station antenna |
| 10/28/1980 | US4231045 Weather proof radio tower bearing assembly |
| 10/28/1980 | US4231040 Simultaneous multiple beam antenna array matrix and method thereof |
| 10/28/1980 | CA1088654A1 Automatic direction finding system |
| 10/21/1980 | US4229746 Loop coupler commutating feed for scanning a circular array antenna |
| 10/21/1980 | US4229745 Edge slotted waveguide antenna array with selectable radiation direction |
| 10/21/1980 | US4229739 Spread beam computational hardware for digital beam controllers |
| 10/15/1980 | EP0017530A1 Radiating source constituted by a dipole excited by a waveguide, and its use in an electronic scanning antenna |
| 10/15/1980 | EP0017037A1 Assembly of at least two directionally and/or omnidirectionally inclined antennas coupled to a power dividing device |
| 10/14/1980 | US4228436 Limited scan phased array system |
| 10/07/1980 | US4227197 Load moving devices |
| 09/30/1980 | US4225870 Null steering antenna |
| 09/30/1980 | US4225868 Low-profile X-Y antenna pedestal utilizing multi-hinge points to provide angular motion for each axis |
| 09/17/1980 | EP0015829A1 Electromagnetic process for controlling the orientation of a platform and platform employing this process |
| 09/16/1980 | US4223310 Multi-transceiver antenna |
| 09/16/1980 | CA1085954A1 Sectored antenna receiving system |
| 09/09/1980 | US4222055 Around-the-mast rotary coupler |
| 09/03/1980 | EP0015018A1 A lens antenna arrangement |
| 09/02/1980 | US4220954 Adaptive antenna system employing FM receiver |
| 08/26/1980 | US4219814 Scanning radar |
| 08/26/1980 | US4219811 Synthetic array autofocus system |
| 08/20/1980 | EP0014650A1 Microwave adaptive spatial filter and its method of use in lowering or suppressing the sidelobes of the radiation pattern of an antenna |
| 08/20/1980 | EP0014605A1 Reverse Cassegrain antenna for multipurpose radar |
| 08/12/1980 | US4217590 Electromagnetic lens for RF aerials |
| 08/12/1980 | US4217587 Antenna beam steering controller |
| 08/12/1980 | US4217586 Channel estimating reference signal processor for communication system adaptive antennas |
| 08/05/1980 | US4216496 Apparatus for detecting and measuring interference in transmission signals |
| 08/05/1980 | US4216475 Digital beam former |
| 08/05/1980 | US4216474 Pulse frequency modulator and compressor for staircase FM radar systems |
| 08/05/1980 | US4216473 MIPS Hover attachment |
| 07/22/1980 | US4214248 Transreflector scanning antenna |
| 07/15/1980 | US4213133 Linear antenna arrays |
| 07/15/1980 | US4213131 Scannable beam forming interferometer antenna array system |
| 07/15/1980 | CA1081845A1 Beam scanning |
| 07/09/1980 | EP0013222A1 Diode phase shifter for microwaves and electronic scanning antenna comprising same |
| 07/09/1980 | EP0013221A1 Radar scanning antenna, in particular for a tracking radar |
| 07/08/1980 | US4212014 Electronically controlled dielectric panel lens |
| 06/24/1980 | US4209791 Antenna apparatus for bearing angle determination |
| 06/24/1980 | US4209789 Rotatable aerial installation mounted on a mast with remote mechanical drive |
| 06/24/1980 | CA1080350A1 Phase shifter and polarization switch |
| 06/24/1980 | CA1080338A1 Hard clipped beam former |
| 06/10/1980 | CA1079346A1 High-voltage network for areas with high rate of icing |
| 06/03/1980 | CA1078957A1 Ghost cancellation device |
| 06/03/1980 | CA1078955A1 Radio navigation antenna system |
| 05/20/1980 | US4204214 Slewing and tracking mechanism for dish structure |