Patents
Patents for H01Q 21 - Aerial arrays or systems (25,127)
02/1987
02/03/1987US4641366 Portable radio communication apparatus comprising an antenna member for a broad-band signal
02/03/1987US4641317 Spread spectrum radio transmission system
02/03/1987US4641145 Microwave antenna having an array of radiating elements for circularly polarized signals
02/03/1987US4641140 Miniaturized microwave transmission link
02/03/1987CA1217558A1 Dual space fed parallel plate lens antenna beamforming system
01/1987
01/22/1987DE3526046A1 Antenna array
01/21/1987EP0209220A1 Dual end resonant slot array antenna feed
01/21/1987EP0209156A2 Planar antenna with patch radiators
01/20/1987US4638323 Asymmetric ridge waveguide collinear slot array antenna
01/20/1987US4638318 Small angular beamwidth antenna system
01/08/1987DE3524132A1 Surveillance radar antenna
01/06/1987USH190 Notch antenna for a radio communications system
01/06/1987US4635070 Dual mode antenna having simultaneous operating modes
01/06/1987US4635069 Mutual-coupling multi-element FM antenna
01/06/1987US4635065 Antenna device for direction finders
12/1986
12/30/1986US4633265 Low frequency/high frequency omnidirectional antenna formed of plural dipoles extending from a common center
12/30/1986US4633262 Microstrip antenna with protective casing
12/30/1986US4633250 Coplanar antenna for proximate surveillance systems
12/30/1986EP0207029A2 Electromagnetically coupled microstrip antennas having feeding patches capacitively coupled to feedlines
12/30/1986EP0205845A1 Method of elaborating a central signal for controlling the polarization of an antenna
12/23/1986US4631544 S-band coaxial slot array antenna
12/17/1986EP0205393A1 Omnidirectional cylindrical antenna
12/17/1986EP0205212A1 Modular microwave antenna units and antenna composed of such units
12/17/1986EP0204804A1 Omnidirectional antenna array.
12/16/1986US4629978 Dipole antenna
12/03/1986EP0203777A2 Space amplifier
12/02/1986US4626865 Antenna element for orthogonally-polarized high frequency signals
11/1986
11/26/1986EP0202901A1 Radar antenna array
11/25/1986CA1214545A1 Broadband diamond-shaped antenna
11/18/1986US4623894 Interleaved waveguide and dipole dual band array antenna
11/18/1986US4623893 Microstrip antenna and antenna array
11/18/1986US4623891 Far-field nulling technique for reducing the susceptibility to cross-polarized signal in dual-polarized monopulse-type tracking antennas
11/12/1986EP0200819A2 Antenna array
11/05/1986EP0199805A1 Modularized contoured beam direct radiating antenna
10/1986
10/29/1986EP0199463A2 Electrical power dividers
10/28/1986US4620155 Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
10/21/1986US4618865 Dielectric trough waveguide antenna
10/14/1986US4617573 Method for obtaining a linear cellular array employing cosine-squared antenna patterns
09/1986
09/30/1986US4614947 Planar high-frequency antenna having a network of fully suspended-substrate microstrip transmission lines
09/24/1986EP0195356A2 L-band antenna for mobile satellite broadcasting
09/23/1986CA1211837A1 Radiating or receiving element for orthogonally polarized high-frequency signals and planar antenna comprising an array of juxtaposed elements of this type
09/23/1986CA1211836A1 Small angular beamwidth antenna system
09/16/1986US4612548 Multi-port radio frequency networks for an antenna array
09/16/1986US4612543 Integrated high-gain active radar augmentor
09/09/1986US4611212 Field component diversity antenna and receiver arrangement
09/03/1986EP0193426A1 Miniature antenna providing gain
08/1986
08/13/1986EP0190927A2 Slotted waveguide antennas and arrays
08/13/1986EP0190862A2 Automobile antenna system
08/13/1986EP0190812A2 Improved polarity switch for satellite television receiver
08/13/1986EP0190569A2 Broad-band directional-antenna arrangement
08/13/1986EP0190412A2 Method for fabricating a planar phase-shifter
08/13/1986EP0190291A1 Antenna construction
08/12/1986US4605932 Nested microstrip arrays
08/12/1986US4605931 Crossover traveling wave feed for microstrip antenna array
08/12/1986CA1209692A1 Antenna with a reflector of open construction
08/06/1986EP0189661A2 Polarity switch for satellite television receiver
08/06/1986EP0189630A1 Low Frequency/high frequency omnidirectional antenna.
08/06/1986EP0189592A1 Coplanar antenna for proximate surveillance systems
07/1986
07/29/1986US4603332 Interleaved microstrip planar array
07/29/1986CA1208774A1 Continuous ferrite aperture for electronic scanning antennas
07/23/1986EP0188087A1 Microstrip patch antenna system
07/02/1986EP0186483A2 Transponder systems
07/02/1986EP0186455A2 A dipole array
07/01/1986US4598296 Dipole antenna system with overhead coverage having equidirectional-linear polarization
06/1986
06/24/1986CA1206607A1 Antenna for transmitting and/or receiving microwave radiation
06/24/1986CA1206605A1 Waveguide having radiating slots and a wide frequency band
06/19/1986WO1986003624A1 Omnidirectional antenna array
06/17/1986US4595926 Dual space fed parallel plate lens antenna beamforming system
06/17/1986CA1206256A1 Compact, adjustable antenna
06/11/1986EP0184235A1 Vor antenna design
06/10/1986US4594595 Circular log-periodic direction-finder array
05/1986
05/22/1986WO1986003062A1 Modularized contoured beam direct radiating antenna
05/20/1986US4590480 Broadcast antenna which radiates horizontal polarization towards distant locations and circular polarization towards nearby locations
05/20/1986US4590479 Broadcast antenna system with high power aural/visual self-diplexing capability
05/20/1986US4590478 Multiple ridge antenna
05/13/1986US4588994 Continuous ferrite aperture for electronic scanning antennas
05/13/1986US4588993 Broadband isotropic probe system for simultaneous measurement of complex E- and H-fields
05/06/1986US4587524 Reduced height monopole/slot antenna with offset stripline and capacitively loaded slot
04/1986
04/30/1986EP0179601A2 Microwave reflection survey method
04/23/1986EP0178877A2 Microwave reflection survey equipment
04/16/1986EP0177630A1 Combination of antennas
04/15/1986US4583098 Circularly polarized antenna using axial slot and slanted parasitic radiators
04/15/1986CA1203297A1 Resonant waveguide aperture manifold
04/09/1986EP0177362A2 Portable radio communication apparatus comprising an antenna member for a broad-band signal
04/08/1986US4581614 Integrated modular phased array antenna
04/01/1986US4580141 Linear array antenna employing the summation of subarrays
03/1986
03/26/1986EP0175129A2 Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
03/19/1986EP0174579A2 Shaped beam antenna
03/11/1986US4575728 Dipole array with means for compensating feedline parasitic currents
03/04/1986US4574290 High gain vertically polarized antenna structure
02/1986
02/27/1986WO1986001340A1 Antenna construction
02/25/1986US4573055 Directionally sensitive receiving antenna
02/25/1986CA1201200A1 Field component diversity antenna arrangement
02/11/1986US4570165 Adjustable loop and dipole antenna
02/11/1986US4570164 Receive antenna system in the presence of a transmitting antenna
02/05/1986EP0170344A2 Dipole antenna system with overhead coverage having equidirectional-linear polarization
02/04/1986US4568944 Y-Shaped dipole antenna
02/04/1986CA1200311A1 Antenna arrangement for personal radio transceivers
12/1985
12/24/1985US4560120 Method for guiding a missile to a target
12/17/1985US4559540 Antenna system with plural horn feeds