Patents
Patents for H01Q 5 - Arrangements for simultaneous operation of aerials on two or more different wavebands (11,466)
04/1980
04/08/1980CA1075357A1 Triband vehicle antenna
01/1980
01/29/1980CA1070823A1 Interleaved antenna array for use in a multiple input antenna system
01/22/1980US4185289 Spherical antennas having isotropic radiation patterns
01/15/1980US4184165 Tuning system for tower antennas
01/09/1980EP0006391A1 Periscopic feed system for two-band antenna
01/08/1980US4183027 Dual frequency band directional antenna system
12/1979
12/11/1979CA1067996A1 Multiple resonance radio frequency antenna structure
11/1979
11/27/1979US4176358 Reflector antenna with matched feed system
10/1979
10/23/1979CA1065051A1 Multiband antenna for window panes
09/1979
09/18/1979US4168504 Multimode dual frequency antenna feed horn
09/04/1979US4167010 Terminated microstrip antenna
08/1979
08/28/1979CA1061452A1 Frequency selective reflector system
07/1979
07/24/1979US4162499 Flush-mounted piggyback microstrip antenna
07/24/1979CA1059235A1 Broadband antenna system with the feed line conductors spaced on one side of a support boom
07/24/1979CA1059234A1 Multiband antenna for window panes
06/1979
06/26/1979CA1057392A1 Dual-frequency circularly polarized antenna for satellite navigation and related problems
04/1979
04/10/1979US4149169 Configuration of two antennae with signal isolation
04/03/1979US4148030 Helical antennas
03/1979
03/20/1979US4145694 Compact, directive, broadband antenna system having end loaded dipoles
03/20/1979US4145693 Three band monopole antenna
02/1979
02/20/1979US4141014 Multiband high frequency communication antenna with adjustable slot aperture
02/20/1979US4141012 Dual band waveguide radiator
02/06/1979US4138684 Loaded microstrip antenna with integral transformer
12/1978
12/26/1978US4131897 TV Antenna
12/19/1978US4130823 Miniature, flush mounted, microwave dual band cavity backed slot antenna
11/1978
11/14/1978US4125840 Broad band dipole antenna
10/1978
10/31/1978US4123758 Disc antenna
07/1978
07/18/1978US4101901 Interleaved antenna array for use in a multiple input antenna system
07/18/1978US4101895 Multifrequency antenna system integrated into a radome
06/1978
06/27/1978US4097868 Antenna for combined surveillance and foliage penetration radar
06/20/1978US4096482 Wide band monopulse antennas with control circuitry
06/13/1978US4095230 High accuracy broadband antenna system
06/13/1978US4095229 Triband vehicle antenna
05/1978
05/30/1978US4092648 Reflex feed system for dual frequency antenna with frequency cutoff means
05/16/1978US4090202 Multiband antenna for automobile windshield
05/09/1978US4089005 Dual frequency antenna
05/09/1978US4089003 Multifrequency microstrip antenna
04/1978
04/04/1978US4083050 Dual band monopole omni antenna
03/1978
03/28/1978US4081803 Multioctave turnstile antenna for direction finding and polarization determination
02/1978
02/28/1978US4077039 Launching and/or receiving network for an antenna feedhorn
02/21/1978US4075634 Portable antenna assembly for television receiver
02/14/1978US4074270 Multiple frequency microstrip antenna assembly
02/07/1978US4072954 Multiband antenna for window panes
02/07/1978US4072953 Multiband antenna for window panes
02/07/1978US4072952 Microwave landing system antenna
01/1978
01/24/1978US4070676 Multiple resonance radio frequency microstrip antenna structure
12/1977
12/13/1977US4063249 Small broadband antenna having polarization sensitive reflector system
12/06/1977US4062017 Multiple frequency band antenna
11/1977
11/29/1977US4060810 Loaded microstrip antenna
10/1977
10/18/1977US4054886 Receiving antenna having mirror symmetry and defined polarizations ion
10/04/1977US4052724 Branching filter
09/1977
09/06/1977US4047179 IFF antenna arrangement
08/1977
08/16/1977US4042935 Wideband multiplexing antenna feed employing cavity backed wing dipoles
08/09/1977US4041499 Coaxial waveguide antenna
07/1977
07/26/1977US4038662 Dielectric sheet mounted dipole antenna with reactive loading
06/1977
06/14/1977US4030100 Multipurpose submarine antenna
04/1977
04/12/1977US4017865 Frequency selective reflector system
02/1977
02/15/1977US4008479 Dual-frequency circularly polarized spiral antenna for satellite navigation
10/1976
10/05/1976US3984841 Broadband antenna system with the feed line conductors spaced on one side of a support boom
07/1976
07/27/1976US3972048 FM-AM windshield antenna
07/20/1976US3971032 Dual frequency microstrip antenna structure
03/1976
03/16/1976US3945013 Double omni-directional antenna
03/09/1976US3943519 Multiplexer-demultiplexer for a microwave antenna
02/1976
02/10/1976US3938159 Dual frequency feed horn using notched fins for phase and amplitude control
01/1976
01/06/1976US3931626 Staggered tuned TV receiving antenna with integrated UHF-VHF sections
01/06/1976US3931625 Shortened multi-rod broadband antenna