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) |
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01/06/1981 | US4243980 Antenna system for electronic security installations |
12/11/1980 | WO1980002782A1 Antenna low-noise q spoiling circuit |
11/25/1980 | US4236160 Loop driven element antenna system and voltage feed system |
08/12/1980 | US4217591 High frequency roll-bar loop antenna |
05/27/1980 | US4205318 Mini-indoor TV antenna |
03/11/1980 | US4193076 Coupling an outer antenna with a radio receiver having a bar antenna |
01/22/1980 | CA1070420A1 Modified logarithmic type of aerial array |
01/15/1980 | US4184164 Directive loop antenna |
09/25/1979 | US4169265 P-Band loop antennas in radial array |
07/10/1979 | US4160979 Helical radio antennae |
07/10/1979 | US4160978 Circularly polarized loop and helix panel antennas |
05/15/1979 | US4155091 Compact omnidirectional antenna array |
04/03/1979 | US4148036 Magnetic quadrapole antenna |
03/06/1979 | CA1050161A1 Inductor or antenna arrangement with integral series resonating capacitors |
02/06/1979 | US4138682 Cubical quad antennas with spreader-reinforced crossarms |
01/16/1979 | US4135183 Antipilferage system utilizing "figure-8" shaped field producing and detector coils |
12/12/1978 | CA1044365A1 Adjustable antenna mount for radio receiver |
09/26/1978 | US4117491 Logarithmically periodic loop antenna array with spaced filters in the coupling network |
07/18/1978 | US4101899 Compact low-profile electrically small vhf antenna |
03/21/1978 | US4080603 Transmitting and receiving loop antenna with reactive loading |
02/21/1978 | US4075634 Portable antenna assembly for television receiver |
05/24/1977 | US4025856 Antenna apparatus |
03/15/1977 | US4012742 Multimode loop antenna |
01/18/1977 | US4004228 Portable transmitter |
01/04/1977 | US4001830 Radio receiver set with rotatable antenna |
11/23/1976 | US3993998 Directional loop antenna with plural dielectric coverings |
08/03/1976 | US3973263 Sensitivity improvement of spaced-loop antenna by capacitive gap loading |
07/20/1976 | US3971031 Loaded quad antenna |
05/11/1976 | US3956751 Miniaturized tunable antenna for general electromagnetic radiation and sensing with particular application to TV and FM |
04/13/1976 | US3950756 Tunable antenna having adjustable loop configurations |
03/23/1976 | US3946397 Inductor or antenna arrangement with integral series resonating capacitors |
02/10/1976 | US3938044 Antenna apparatus for an electronic security system |
01/13/1976 | US3932872 Core design for flexible H-sensor for ELF |