Patents
Sitemap › H01 - Basic electric elements › H01Q - Aerials › H01Q 7 - Loop aerials with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Patents for H01Q 7 - Loop aerials with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop (7,833)
10/1987
10/15/1987DE3611077A1 Arrangement for wireless information transmission by means of electromagnetic waves at an extremely low frequency
10/13/1987CA1228135A1 Resonant tag circuits useful in electronic security systems
09/1987
09/23/1987EP0238458A2 Receiving device for presence detection
07/1987
07/30/1987WO1987004551A1 Receiving device
07/15/1987CN86204686U All channel fixed directional receiving antenna for tv set
07/07/1987US4679046 Transponder systems
06/1987
06/24/1987EP0225973A2 Electromagnetic field probe
06/23/1987CA1223346A1 Antenna
05/1987
05/13/1987EP0221694A2 Vehicle antenna system
04/1987
04/16/1987DE3536837A1 Broadband frame antenna having a constant antenna factor for measuring magnetic field strength
04/14/1987US4658263 Dual antenna for magnetic markers
03/1987
03/24/1987US4652888 Miniature tactical HF antenna
03/24/1987US4652825 Magnetic coils
03/11/1987EP0213743A1 Automobile antenna system
03/03/1987US4647937 Antenna apparatus with tuned loop
02/1987
02/25/1987EP0211637A1 Vehicle antenna system
02/25/1987EP0211636A1 Vehicle antenna system
01/1987
01/06/1987US4634980 Nuclear magnetic resonance radio frequency antenna
12/1986
12/30/1986US4633250 Coplanar antenna for proximate surveillance systems
11/1986
11/25/1986US4625212 Double loop antenna for use in connection to a miniature radio receiver
11/20/1986WO1986006868A1 Cord-carrying coil and method of manufacturing same
11/18/1986US4623877 Method and apparatus for detection of targets in an interrogation zone
11/11/1986US4622558 Toroidal antenna
10/1986
10/28/1986US4620155 Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
10/14/1986US4617571 Tuned band-switching loop antenna
09/1986
09/30/1986CA1212175A1 Double loop antenna for use in connection to a miniature radio receiver
09/03/1986EP0193426A1 Miniature antenna providing gain
09/02/1986CA1210828A1 Coil assembly with flux directing means
08/1986
08/06/1986EP0189592A1 Coplanar antenna for proximate surveillance systems
07/1986
07/16/1986EP0187446A1 Automobile antenna
07/02/1986EP0186483A2 Transponder systems
06/1986
06/17/1986US4595928 Bi-directional antenna array
06/17/1986CA1206256A1 Compact, adjustable antenna
06/11/1986EP0184235A1 Vor antenna design
06/04/1986EP0183521A1 Automobile antenna system
05/1986
05/28/1986EP0182614A1 Automobile antenna system
05/28/1986EP0182497A1 Automobile antenna
05/21/1986EP0181782A1 Automobile antenna system
04/1986
04/15/1986US4583099 Resonant tag circuits useful in electronic security systems
03/1986
03/26/1986EP0175129A2 Nuclear magnetic resonance imaging antenna subsystem having a plurality of non-orthogonal surface coils
02/1986
02/19/1986EP0171972A2 Nuclear magnetic resonance radio frequency antenna
02/11/1986US4570165 Adjustable loop and dipole antenna
02/11/1986US4570164 Receive antenna system in the presence of a transmitting antenna
11/1985
11/13/1985EP0029027B1 Antenna low-noise q spoiling circuit
10/1985
10/22/1985CA1195771A1 Tuned small loop antenna with wide frequency range capabilities and method for designing thereof
10/15/1985US4547776 Loop antenna with improved balanced feed
07/1985
07/24/1985EP0149240A2 Resonant tag circuits useful in electronic security systems
05/1985
05/21/1985US4518965 Tuned small loop antenna and method for designing thereof
04/1985
04/23/1985CA1186049A1 Antenna having a closed standing wave path
04/16/1985US4511900 Current enhanced monopole radiation type antenna apparatus
04/09/1985US4510500 Aircraft shorted loop antenna with impedance matching and amplification at feed point
03/1985
03/19/1985US4506267 Frequency independent shielded loop antenna
02/1985
02/20/1985EP0133364A2 Magnetic coils
01/1985
01/15/1985US4494100 Planar inductors
01/09/1985EP0130286A2 Method and apparatus for detection of targets in an interrogation zone
12/1984
12/04/1984US4486731 Coil assembly with flux directing means
11/1984
11/07/1984EP0124441A1 Tuned-loop antenna with band switching
10/1984
10/24/1984EP0122485A1 Double loop antenna
10/23/1984US4479127 Bi-loop antenna system
08/1984
08/08/1984EP0115270A2 Frequency independent antenna
07/1984
07/03/1984US4458248 Parametric antenna
05/1984
05/29/1984CA1168308A1 Geophysical transmitting loop
04/1984
04/24/1984US4445123 Method for establishing a vertical E-field antenna installation
04/10/1984US4442434 Antenna circuit of the negative impedance type
02/1984
02/21/1984US4433336 Three-element antenna formed of orthogonal loops mounted on a monopole
09/1983
09/27/1983US4407000 Combined dipole and ferrite antenna
08/1983
08/02/1983CA1151262A1 Electronic marker device and method of making same
07/1983
07/26/1983US4395714 Antenna array system usable for AM/FM receiver
07/26/1983CA1150829A1 Asymmetrical antennas for use in electronic security systems
06/1983
06/21/1983CA1148630A1 Shielded balanced loop antennas for electronic security systems
06/14/1983CA1148254A1 Antenna low-noise q spoiling circuit
04/1983
04/12/1983US4380011 Loop antenna arrangement for inclusion in a television receiver
02/1983
02/08/1983US4373163 Loop antenna for security systems
01/1983
01/04/1983CA1138990A1 Antenna system for electronic security installations
11/1982
11/09/1982US4358769 Loop antenna apparatus with variable directivity
11/09/1982CA1135404A1 Magnetic antenna
10/1982
10/26/1982CA1134501A1 Mini-indoor tv antenna
09/1982
09/22/1982EP0060628A1 Tuned small loop antenna
08/1982
08/03/1982US4342999 Loop antenna arrangements for inclusion in a television receiver
07/1982
07/27/1982CA1128654A1 Antenna system with variable directivity
07/14/1982EP0055771A1 Modified loop antenna for security systems
07/13/1982US4339827 Automatic tuning circuit arrangement with switched impedances
07/06/1982US4338606 Antenna system with variable directivity
06/1982
06/08/1982US4334227 Electronic marker device and method of making same
03/1982
03/02/1982CA1119291A1 High frequency roll-bar loop antenna
02/1982
02/04/1982WO1982000378A1 Modified loop antenna for security systems
02/02/1982US4314378 Antenna low-noise Q spoiling circuit
01/1982
01/19/1982US4312003 Ferrite antenna
01/13/1982EP0043591A1 Antenna
12/1981
12/01/1981CA1113576A1 Antipilferage system utilizing "figure-8" shaped field producing and detector coils
09/1981
09/15/1981US4290070 Magnetic loop antenna with diamagnetic properties
09/08/1981US4288794 Shielded loop VOR/ILS antenna system
08/1981
08/27/1981EP0029027A4 Antenna low-noise q spoiling circuit.
07/1981
07/14/1981US4278980 Antenna input circuit for radio receiver
05/1981
05/27/1981EP0029027A1 Antenna low-noise q spoiling circuit.
05/26/1981US4270128 Radio antennae
04/1981
04/07/1981US4260990 Asymmetrical antennas for use in electronic security systems
02/1981
02/17/1981US4251808 Shielded balanced loop antennas for electronic security systems
02/10/1981US4250507 Directional circular loop beam antenna
02/03/1981US4249185 Portable, collapsible cubical quad antenna
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