| Patents for H01Q 5 - Arrangements for simultaneous operation of aerials on two or more different wavebands (11,466) |
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| 10/16/1984 | US4477814 Dual mode radio frequency-infrared frequency system |
| 10/16/1984 | CA1176368A1 Two-band microwave source and an antenna equipped with said source |
| 10/09/1984 | US4476471 Antenna apparatus including frequency separator having wide band transmission or reflection characteristics |
| 09/11/1984 | US4471359 Dual band, low sidelobe, high efficiency mirror antenna |
| 08/28/1984 | US4468670 Antenna device for air traffic radar |
| 08/14/1984 | US4466003 Compact wideband multiple conductor monopole antenna |
| 07/24/1984 | US4462034 Antenna system with plural horn feeds |
| 07/17/1984 | US4460896 Antenna with tunable helical resonator |
| 05/22/1984 | US4450449 Patch array antenna |
| 05/16/1984 | EP0108693A1 High-power rotating joint for a double-waveband antenna |
| 04/17/1984 | CA1165865A1 Multifrequency reflector antenna |
| 04/10/1984 | US4442438 Helical antenna structure capable of resonating at two different frequencies |
| 04/10/1984 | US4442437 Small dual frequency band, dual-mode feedhorn |
| 04/10/1984 | US4442436 Vertical antenna |
| 04/03/1984 | US4441108 Omnidirectional multiple-band antenna |
| 02/28/1984 | US4434425 Multiple ring dipole array |
| 02/15/1984 | EP0100466A1 Dual-band antenna system of a beam waveguide type |
| 02/14/1984 | US4431996 Missile multi-frequency antenna |
| 01/10/1984 | US4425565 Multiple resonant coil using distributed capacity between turns |
| 12/06/1983 | US4419671 Small dual frequency band hybrid mode feed |
| 12/06/1983 | US4419670 Dual feed box horn antenna |
| 10/18/1983 | US4410893 Dual band collinear dipole antenna |
| 08/23/1983 | CA1152660A1 Electronic tuning antenna system |
| 08/02/1983 | US4397041 Complex antenna system and FM/AM receiver |
| 07/26/1983 | US4395714 Antenna array system usable for AM/FM receiver |
| 05/18/1983 | EP0079001A1 Receiving circuit for HF signals |
| 05/03/1983 | US4382260 Two channel transmit only antenna |
| 04/26/1983 | US4381566 Electronic tuning antenna system |
| 03/15/1983 | US4376937 Antenna for primary and secondary radars |
| 03/15/1983 | CA1143056A1 Broad-band antenna systems |
| 02/01/1983 | CA1140671A1 Antenna with a single wide band matching network |
| 01/04/1983 | US4367474 Frequency-agile, polarization diverse microstrip antennas and frequency scanned arrays |
| 12/22/1982 | EP0067753A1 Microwave antenna with open cavities fed by two orthogonal dipoles |
| 11/16/1982 | CA1135548A1 Wide scan quasi-optical frequency diplexer |
| 10/26/1982 | US4356492 Multi-band single-feed microstrip antenna system |
| 09/22/1982 | EP0060628A1 Tuned small loop antenna |
| 09/14/1982 | US4349825 Antenna assembly for high frequency ranges |
| 09/08/1982 | EP0059343A1 Antenna apparatus including frequency separator having wide band transmission or reflection characteristics |
| 09/07/1982 | US4348677 Common aperture dual mode seeker antenna |
| 08/17/1982 | US4345257 Primary radar antenna having a secondary radar (IFF) antenna integrated therewith |
| 08/11/1982 | EP0057538A2 Antenna device |
| 08/04/1982 | EP0057121A2 High-frequency dual-band feeder and antenna incorporating the same |
| 07/27/1982 | US4342036 Multiple frequency band, multiple beam microwave antenna system |
| 06/24/1982 | WO1982002119A1 Directional antenna with a plurality of elements |
| 05/11/1982 | US4329689 Microstrip antenna structure having stacked microstrip elements |
| 03/16/1982 | US4320402 Multiple ring microstrip antenna |
| 03/16/1982 | US4320401 Broadband microstrip antenna with automatically progressively shortened resonant dimensions with respect to increasing frequency of operation |
| 03/10/1982 | EP0046996A1 Antenna systems |
| 03/02/1982 | US4318109 Planar antenna with tightly wound folded sections |
| 03/02/1982 | CA1119290A1 Spherical antennas having isotropic radiation patterns |
| 02/16/1982 | US4316195 Rotating dual frequency range antenna system |
| 02/03/1982 | EP0045254A1 Compact dual-frequency microwave feed |
| 01/05/1982 | US4309709 Dual frequency aerial feed arrangements |
| 01/05/1982 | US4309707 Radio antennae structures employing helical conductors |
| 12/29/1981 | US4308540 Compact television antenna system |
| 12/22/1981 | US4307404 Dichroic scanner for conscan antenna feed systems |
| 12/08/1981 | US4305078 Multifrequency series-fed edge slot antenna |
| 11/24/1981 | US4302760 Wideband vertical doublet antenna |
| 10/27/1981 | US4297711 Omnidirectional receiving antenna |
| 10/27/1981 | US4297707 Multiple omnidirectional antenna |
| 10/06/1981 | US4293861 Compact television antenna system |
| 09/15/1981 | US4290071 Multi-band directional antenna |
| 09/15/1981 | US4290069 Directional antenna for long range T.V. signal reception |
| 08/18/1981 | US4284992 Wide scan quasi-optical frequency diplexer |
| 08/04/1981 | US4282528 Plural antennas having a sleeve dipole |
| 08/04/1981 | US4282527 Multi-spectral detection system with common collecting means |
| 07/07/1981 | CA1104713A1 Single uhf/vhf antenna system |
| 05/19/1981 | US4268834 Single UHF/VHF antenna system |
| 04/21/1981 | CA1099812A1 Helical antennas |
| 04/07/1981 | US4260993 Dual-band antenna with periscopic supply system |
| 03/31/1981 | US4259672 Multi-band vertical antenna |
| 03/31/1981 | US4259670 Broadband microstrip antenna with automatically progressively shortened resonant dimensions with respect to increasing frequency of operation |
| 03/25/1981 | EP0025739A1 Primary and secondary radar aerial |
| 03/24/1981 | US4258366 Multifrequency broadband polarized horn antenna |
| 03/24/1981 | CA1098206A1 Configuration of two antennae with signal isolation |
| 03/11/1981 | EP0024808A1 Dual frequency aerial feed arrangements |
| 03/10/1981 | CA1097428A1 Terminated microstrip antenna |
| 01/27/1981 | US4247858 Antennas for use with optical and high-frequency radiation |
| 01/13/1981 | US4245222 Dual function antenna |
| 01/07/1981 | EP0021762A1 Electronic tuning antenna system |
| 01/07/1981 | EP0021252A1 Pillbox type radar antenna with integrated IFF antenna |
| 01/06/1981 | US4243990 Integrated multiband array antenna |
| 11/25/1980 | US4236161 Array feed for offset satellite antenna |
| 11/25/1980 | US4236160 Loop driven element antenna system and voltage feed system |
| 11/04/1980 | US4232319 Broadband transmitting antenna for test chamber |
| 10/21/1980 | US4229744 Directional annular slot antenna |
| 10/21/1980 | US4229743 Multiple band, multiple resonant frequency antenna |
| 09/16/1980 | CA1085956A1 Iff antenna arrangement |
| 09/09/1980 | US4222053 Multi-band vertical antenna |
| 09/02/1980 | US4220957 Dual frequency horn antenna system |
| 08/19/1980 | US4218687 Broadband dipole antenna system with coaxial feed-line coated with ferrite particles to reduce line currents |
| 08/19/1980 | US4218682 Multiple band circularly polarized microstrip antenna |
| 08/12/1980 | US4217589 Ground and/or feedline independent resonant feed device for coupling antennas and the like |
| 06/17/1980 | US4208660 Radio frequency ring-shaped slot antenna |
| 06/10/1980 | US4207573 Dual-frequency antenna system with common reflector illuminated by different feeds |
| 05/27/1980 | US4205317 Broadband miniature antenna |
| 05/13/1980 | US4203118 Antenna for cross polarized waves |
| 05/06/1980 | US4201988 Wideband VHF antenna |
| 04/22/1980 | US4199764 Dual band combiner for horn antenna |
| 04/15/1980 | US4198639 Parabolic and log periodic antennas combined for compact high-gain broadband antenna system |