| Patents for H01Q 5 - Arrangements for simultaneous operation of aerials on two or more different wavebands (11,466) |
|---|
| 01/28/1993 | DE4123997A1 Trapezoidal directional radiator for duo-band operation in VHF-UHF range - feeds in lambda 5/8 shanks of trapezium via non-radiating lambda/8 circuits in low-ohmic, identical phase manner |
| 01/26/1993 | US5182564 Guidance apparatus with dual mode sensor |
| 01/21/1993 | DE4123640A1 Remote control for automatic garage door - uses car radio antenna to transmit remote control signals to door operating drive |
| 01/07/1993 | EP0521384A1 Multiple-frequency stacked microstrip antenna |
| 01/02/1993 | CA2072502A1 Multiple-frequency stacked microstrip antenna |
| 12/30/1992 | EP0520197A2 Foil antenna |
| 12/29/1992 | US5175555 Combined radar altimeter, radiometer sensor employing multiport feed horn having blended sidewall geometry |
| 12/22/1992 | US5173713 Three element inverted conical monopole with series inductance and resistance in each element |
| 12/22/1992 | US5173711 Microstrip antenna for two-frequency separate-feeding type for circularly polarized waves |
| 12/08/1992 | US5170493 Combined low frequency receive and high frequency transceive antenna system and method |
| 12/02/1992 | EP0516440A1 Microstrip antenna |
| 12/01/1992 | US5168472 Dual-frequency receiving array using randomized element positions |
| 11/25/1992 | EP0515192A1 Notched nested cup multi-frequency band antenna |
| 11/17/1992 | US5164739 Antenna device for an automobile |
| 11/12/1992 | DE4114817A1 Multi-waveband radio aerial for motor vehicle - combines centre-loaded low-band receive-only antenna with separate high-band receive-transmit stub aerial |
| 11/03/1992 | US5160936 Multiband shared aperture array antenna system |
| 10/06/1992 | US5153600 Multiple-frequency stacked microstrip antenna |
| 10/01/1992 | WO1992016981A1 Dual band integrated lnb feedhorn system |
| 09/30/1992 | EP0505673A1 Multiband rod antenna |
| 08/06/1992 | DE4102845A1 Vehicle rod aerial for several separate frequency ranges - comprises 400 mm rod with coiled lambda-4 conductors for lower frequency range with common foot point |
| 07/28/1992 | US5134419 Three-wave shared antenna (radio, am, and fm) for automobile |
| 07/22/1992 | EP0495507A1 Retractable motorized multiband antenna |
| 07/01/1992 | EP0492022A1 Wide band radio antenna with weak stationary wave rating |
| 06/23/1992 | US5124733 Stacked microstrip antenna |
| 06/23/1992 | US5124714 Dual slot planar mobile antenna fed with coaxial cables |
| 06/09/1992 | US5121127 Microstrip antenna |
| 06/03/1992 | EP0485467A4 Improved feeds for dual frequency feed assembly |
| 05/20/1992 | EP0485467A1 Improved feeds for dual frequency feed assembly |
| 05/13/1992 | EP0484347A1 Multi-resonant laminar antenna |
| 05/05/1992 | US5111213 Broadband antenna |
| 04/30/1992 | WO1992007394A1 Satellite antenna |
| 04/22/1992 | EP0481417A1 Device for feeding an antenna element radiating two orthogonal polarisations |
| 04/21/1992 | US5107274 Collocated non-interfering dual frequency microwave feed assembly |
| 04/07/1992 | US5103237 Dual band signal receiver |
| 02/18/1992 | US5089829 Antenna device shared by three kinds of waves |
| 02/18/1992 | US5089828 Electromagnetic radiation receiver |
| 02/12/1992 | EP0470797A2 Antenna apparatus |
| 02/11/1992 | US5087922 Multi-frequency band phased array antenna using coplanar dipole array with multiple feed ports |
| 02/11/1992 | CA1295732C Multifrequency antenna, particularly for space telecommunications |
| 01/29/1992 | EP0468620A2 Dual band frequency reuse antenna |
| 01/15/1992 | EP0466126A2 Method and apparatus for producing multiple, frequency-addressable scanning beams |
| 01/14/1992 | US5081464 Method and apparatus for producing multiple, frequency-addressable scanning beams |
| 01/08/1992 | EP0464255A1 Multiband antenna |
| 01/07/1992 | US5079562 Multiband antenna |
| 12/24/1991 | US5075691 Multi-resonant laminar antenna |
| 12/24/1991 | US5075680 Method and apparatus for monitoring vehicular traffic |
| 12/10/1991 | US5072230 Mobile telescoping whip antenna with impedance matched feed sections |
| 12/10/1991 | US5072229 Windshield antenna for an automotive vehicle |
| 11/19/1991 | US5066958 Dual frequency coaxial feed assembly |
| 11/12/1991 | US5065164 Frequency range enchanced monopole antenna |
| 10/22/1991 | CA1291257C Antenna system for hybrid communications satellite |
| 10/15/1991 | US5057849 Rod antenna for multi-band television reception |
| 10/08/1991 | US5055852 Diplexing radiating element |
| 09/25/1991 | EP0447614A2 Antenna duplexer |
| 09/19/1991 | DE4007824A1 Vehicle antenna design with dipole elements - uses high frequency current blocking device in parallel with lower element |
| 09/18/1991 | EP0447218A2 Plural frequency patch antenna assembly |
| 09/05/1991 | DE4106250A1 Polarisation independent dipole aerial array - has number of identical aerial units symmetrically arranged in two dimensional array each unit with dipole element |
| 09/03/1991 | US5046132 Open field test site reference antenna with integral battery powered signal generator |
| 08/28/1991 | EP0443088A2 Rod antenna for at least two frequency ranges |
| 08/27/1991 | US5043738 Plural frequency patch antenna assembly |
| 08/21/1991 | EP0277189B1 Frequency selective screen having sharp transition |
| 08/20/1991 | US5041840 Multiple frequency antenna feed |
| 07/30/1991 | US5036336 System for the integration of I.F.F. sum and difference channels in a radar surveillance antenna |
| 07/24/1991 | EP0142555B1 Dual band phased array using wideband elements with diplexer |
| 07/23/1991 | US5034697 Magnetic amplifier switch for automatic tuning of VLF transmitting antenna |
| 07/16/1991 | US5032804 Frequency agile transmitter antenna combiner |
| 07/10/1991 | EP0436406A2 Automobile antenna |
| 07/09/1991 | US5030963 Signal receiver |
| 07/03/1991 | EP0435752A1 A wide band diplexer, especially for decameter waves |
| 06/26/1991 | EP0434282A2 Dual mode antenna apparatus having slotted waveguide and broadband arrays |
| 06/19/1991 | EP0433255A2 Orthogonally polarized dual-band printed circuit antenna employing radiating elements capacitively coupled to feedlines |
| 06/18/1991 | US5025263 Multi-frequency antenna |
| 06/12/1991 | EP0431764A2 Antenna with curved dipole elements |
| 06/11/1991 | US5023623 Dual mode antenna apparatus having slotted waveguide and broadband arrays |
| 06/11/1991 | CA1284838C Antenna exciter for at least two different frequency bands |
| 05/29/1991 | EP0429255A2 Three-wave shared antenna (radio, AM and FM) for automobile |
| 05/23/1991 | DE4037851A1 Coaxial wide band TV or radio aerial - has non-conductive horizontal plane and fed, elongate, conductive, grid-shaped radiator element with two mirror-shaped inner conductors |
| 05/23/1991 | DE3938443A1 Reflector antenna for two differing frequency ranges - achieves broadened characteristic in one range using horn radiator as exciter |
| 05/23/1991 | DE3938217A1 Reflector aerial for two different frequency ranges - has exciter with high secondary lobes and narrowing radiation diagram with increased frequency |
| 05/21/1991 | US5017935 Multiband antenna system for use in motor vehicles |
| 05/15/1991 | EP0427654A1 Tuned helical antennae consisting of two quadrifilar antennas fit into each other |
| 05/11/1991 | CA2029290A1 Dual layer resonant quadrifilar helix antenna |
| 05/08/1991 | EP0426566A1 Multifocal receiving antenna with one single pointing direction for reception from several satellites |
| 05/01/1991 | WO1991006988A1 Multifocal receiving antenna with a single plotting direction for several satellites |
| 05/01/1991 | CA2044586A1 Antenne de reception multifocale a direction de pointage unique pour plusieurs satellites |
| 04/02/1991 | US5005023 Dual band integrated LNB feedhorn system |
| 03/26/1991 | US5003321 Dual frequency feed |
| 03/26/1991 | US5003318 Dual frequency microstrip patch antenna with capacitively coupled feed pins |
| 03/20/1991 | EP0417356A1 Dual frequency microwave feed assembly |
| 03/19/1991 | US5001493 Multiband gridded focal plane array antenna |
| 03/19/1991 | US5001444 Two-frequency radiating device |
| 03/05/1991 | US4998113 Nested horn radiator assembly |
| 02/21/1991 | WO1991002390A1 Improved feeds for dual frequency feed assembly |
| 02/19/1991 | US4994817 Annular slot antenna |
| 02/06/1991 | CN1049071A Annular slot antenna |
| 02/05/1991 | US4990927 Microstrip antenna |
| 01/30/1991 | EP0410083A1 Annular slot antenna |
| 01/25/1991 | WO1991001577A1 Multi-resonant laminar antenna |
| 01/24/1991 | CA2017766A1 Annular slot antenna |
| 01/09/1991 | EP0406564A2 Rod antenna for two frequency ranges |