Patents
Sitemap › H01 - Basic electric elements › H01Q - Aerials › 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
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)
02/1990
02/27/1990US4905012 Power efficient feed network for TACAN antenna arrays
02/27/1990US4904831 Mitered mechanical switches
02/21/1990CN1039932A Super transmission gain microwave antenna
02/20/1990US4903031 Satellite receiver
02/15/1990DE3827589A1 Verfahren und einrichtung fuer die simultane erzeugung von mehreren in echtzeit steuerbaren antennendiagrammen Method and device for the simultaneous generation of multiple controllable in real-time antenna diagrams
02/14/1990CN2052962U Ac tv antenua direction changer
02/13/1990US4901085 In an overlapping beam, power versatile system
02/13/1990US4901084 Object detection and location system
02/13/1990CA1265865A1 Phased array transmitter
02/07/1990EP0354115A1 Microwave transceiver for displaying concealed objects
02/06/1990USH740 Antenna sidelobe interference canceller
02/06/1990USH739 Auxiliary antenna interference canceller
02/06/1990US4899160 Guidance equipment for microwave landing system
02/06/1990US4897910 Method for removing sprinkler pipe from a field
01/1990
01/30/1990CA1265236A1 Beam forming antenna system
01/24/1990CN2051790U Automatic remote control direction finder for tv antenna
01/23/1990US4896033 Array of optically-controlled elements for the diffusion of electromagnetic energy
01/16/1990US4894114 Process for producing vias in semiconductor
01/10/1990EP0349825A2 Relieved bearing structure for highly accurate, turnable reflectors or mirrors for telescopes
01/02/1990US4891651 Light plane communication system for use in a phased array antenna
12/1989
12/28/1989DE3441269A1 Method for modulating the amplitude of the secondary lobes of the radiation pattern of a UHF antenna, application of the method and filter for carrying out the method
12/27/1989CN1038378A Antenna device and method for controlling its postures
12/27/1989CA1264084A1 Rotation mechanism for a waveguide feeder
12/19/1989US4888592 Satellite antenna alignment system
12/13/1989EP0345768A2 Antenna reconfigurable with respect to frequency, coverage and polarisation
12/13/1989EP0345391A1 Method and apparatus for controlling the phase of an amplitude-modulated optical signal and its use in a phased-array antenna
12/13/1989EP0188504B1 Adaptive antenna array
12/12/1989US4887313 Method and apparatus for making phase stable microwave measurements
12/12/1989US4887091 Broadcasting receiver for vehicles
12/12/1989US4887090 Vehicle antenna with shiftable gain patterns
12/07/1989DE3819250A1 Phase-controlled antenna array
12/05/1989US4885592 Electronically steerable antenna
12/05/1989US4885589 Optical distribution of transmitter signals and antenna returns in a phased array radar system
11/1989
11/29/1989EP0343823A1 Method for stabilizing an electronically steered monopulse antenna
11/29/1989EP0343465A2 Rotatable antenna with a bearing and a counterweight
11/21/1989US4882589 Coherent switching system for a multiple beam antenna
11/21/1989US4882588 Steerable beam antenna system using butler matrix
11/21/1989US4882235 Liquid crystal cell window
11/21/1989CA1263179A1 Method and apparatus for positioning a satellite antenna from a remote well logging location
11/16/1989DE3820920A1 Antenna arrangement
11/15/1989CN2047844U Radar tv antenna support
11/14/1989US4881081 Antenna orientation adjusting device for earth station
11/14/1989US4881078 Tracking system with beam switching antenna
11/14/1989CA1262883A1 Material transfer assembly
11/08/1989EP0340429A1 Electronically scanned antenna
11/08/1989CN2047454U Remote-control direction changing device of television antenna
11/07/1989US4879711 Satellite communications system employing frequency reuse
10/1989
10/31/1989US4877949 Hand-held instant bar code reader system with automated focus based on distance measurements
10/25/1989EP0338379A2 Antenna apparatus and attitude control method
10/25/1989CN2046687U Rotary support of tv antenna
10/25/1989CN1036668A Antenna which is electronically reconfigurable in transmission
10/24/1989US4876548 Phased array antenna with couplers in spatial filter arrangement
10/24/1989US4876547 M.T.I. radar system
10/24/1989US4876489 Signal processing
10/18/1989EP0337025A1 Beamforming/null-steering adaptive array
10/17/1989US4875052 Adjustable orientation apparatus with simultaneous adjustment of polar and declination angles
10/11/1989EP0335942A1 Microwave radiometer
10/10/1989US4873529 Coplanar patch antenna
10/10/1989US4873526 Mobile station antenna attitude control apparatus
10/05/1989WO1989009499A1 Antenna arrangement and process for its use
10/04/1989EP0334866A1 Drive and locking system.
10/03/1989US4872016 Data processing system for a phased array antenna
09/1989
09/27/1989CN2045149U Simple pull-string type antenna steering device
09/26/1989US4870424 Method and apparatus for reducing unwanted r.f. signal antenna reception/transmission
09/26/1989US4870423 Method and device for focusing, on one point to be examined, the antennae of an antenna array
09/26/1989CA1261059A1 Satellite earth station
09/26/1989CA1261037A1 Test apparatus in a radar system
09/26/1989CA1260136A1 Angularly orienting and positioning device for the rotation axis of a turning load
09/20/1989EP0333166A1 Electronically reconformable transmitting antenna
09/19/1989US4868886 Combined global/spot beam configuration for satellite communications
09/19/1989US4868574 Electronically scanned radar system
09/12/1989US4866456 Horizon-to-horizon satellite antenna drive mechanism
09/06/1989EP0331462A1 Liquid crystal cell window
09/06/1989EP0331248A1 Antenna system with adjustable beam width and beam orientation
09/06/1989EP0330699A1 Microwave circuit module, such as an antenna, and method of making same
09/05/1989US4864317 Combination satellite antenna-solar collector
09/05/1989US4864312 Device for optical control of a beam-scanning antenna
09/05/1989US4864311 Beam forming network
09/05/1989US4864310 Adaptive antenna system for radio waves, in particular for microwaves
09/05/1989US4864309 Microwave radiometer
09/05/1989US4864308 Frequency-scanning radiometer
08/1989
08/29/1989US4862185 Variable wide angle conical scanning antenna
08/29/1989US4862179 Satellite receiver
08/24/1989WO1989007864A1 Multipath reduction system
08/23/1989EP0328635A1 Method and structure for reflectror surface adjustment
08/23/1989CN2043429U Preselection type tv antenna direction adjusting device
08/22/1989US4858490 Two motor redundant drive mechanism
08/22/1989CA1258708A1 Multidirectional feed and flush-mounted surface wave antenna
08/15/1989US4857936 Conical sweep array antenna and a radar having such an antenna
08/03/1989DE3802662A1 Phase-controlled antenna
08/01/1989US4853839 Antenna position tracking apparatus and methods
07/1989
07/26/1989EP0325012A1 Phased array antenna with couplers in spatial filter arrangement
07/25/1989CA1257785A1 Apparatus for simultaneously rotating a plurality of parallel shafts
07/20/1989DE3744511A1 Method for controlled distribution in the spectral band of electromagnetic and/or acoustic energy which passes through and/or is reflected from a body of any shape, in order to make detectability more difficult, and for indirect reduction of the echo cross-section
07/19/1989EP0324284A1 Control device for domestic electrical equipment
07/18/1989US4849763 Low sidelobe phased array antenna using identical solid state modules
07/18/1989CA1257693A1 Antenna polarization control device and method for implementing said device
07/18/1989CA1257692A1 Antenna steering device allowing a scanning in two orthogonal directions
07/13/1989WO1989006457A1 Control device for domestic electrical equipment
07/12/1989EP0323664A2 Coplanar patch antenna
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