Patents
Patents for H01Q 5 - Arrangements for simultaneous operation of aerials on two or more different wavebands (11,466)
03/1988
03/16/1988CN87105573A Antenna system for hybrid-type communication satallite
03/10/1988DE3629315A1 Reflector arrangement for a geostationary satellite
03/09/1988EP0258277A1 Dual band antenna permitting connectorless antenna coupler
02/1988
02/25/1988WO1988001445A1 Antenna system for hybrid communications satellite
02/25/1988WO1988001442A1 Frequency selective screen having sharp transition
02/16/1988US4725846 Disguise antenna operating in the cellular band
02/10/1988CN86210836U Universal television receiving antenna with multi-frequency band
02/03/1988EP0255095A2 Transponder antenna
02/02/1988US4723305 Dual band notch antenna for portable radiotelephones
01/1988
01/28/1988DE3624176A1 Transmitting device for at least two radio-frequency transmitters radiating at different transmitter frequencies and with different radiation patterns
01/27/1988EP0254373A1 Antenna for high frequencies
01/26/1988US4721965 AM-FM-cellular telephone multiband antenna for motor vehicle
01/26/1988US4721962 Antenna for a transceiver, particularly portable telephone
01/20/1988CN87103632A Combined up and down feed network for a communication satellite antenna
12/1987
12/03/1987WO1987007439A1 Combined uplink and downlink satellite antenna feed network
10/1987
10/20/1987US4701765 Structure for a dichroic antenna
10/06/1987US4698638 Dual mode target seeking system
09/1987
09/30/1987EP0238662A1 Optical device
09/16/1987EP0237110A1 Direction-finding antenna system
09/08/1987US4692769 Dual band slotted microstrip antenna
09/01/1987US4691206 Microstrip and cavity-backed aperture antenna
08/1987
08/25/1987US4689627 Dual band phased antenna array using wideband element with diplexer
07/1987
07/23/1987DE3601553A1 Arrangement for the distribution of extremely high frequency energy
07/16/1987WO1987004307A1 Dual band antenna permitting connectorless antenna coupler
07/08/1987EP0227804A1 Axial multipole mobile antenna
07/01/1987EP0227005A2 Transmitting device comprising two microwave transmitters radiating different frequencies with different radiation patterns
06/1987
06/23/1987US4675687 AM-FM cellular telephone multiband antenna for motor vehicle
06/23/1987CA1223344A1 Monopulse feeder for transmitting and receiving radar signals within two mutually separated frequency bands
06/19/1987DE3545639C1 Transmitter operating at at least two frequencies - uses single VHF antenna array with different polar diagrams
06/19/1987DE3544092A1 Multi-band antenna for the GHz band
06/16/1987EP0225460A2 Transmit-receive antenna, especially for short and medium waves
06/09/1987US4672685 Dual band antenna having separate matched inputs for each band
05/1987
05/19/1987US4667204 Combination dual rhombic and V-type antenna for VHF-UHF television receivers
04/1987
04/14/1987US4658260 Telescoping multiband antenna
04/09/1987WO1987002193A1 Optical device
04/08/1987EP0216907A1 Multiband antenna.
04/07/1987US4656483 Switchable antenna for the VHF and UHF frequency bands
03/1987
03/31/1987US4654622 Monolithic integrated dual mode IR/mm-wave focal plane sensor
03/25/1987EP0215535A1 Dual frequency feed
03/24/1987US4652885 Dual mode antenna for millimeter wave and infrared radiation
03/03/1987US4647941 Telescopic antenna extended by coaxial cable feed
01/1987
01/27/1987US4639731 Monopulse feeder for transmitting and receiving radar signals within two mutually separated frequency bands
01/22/1987DE3526058A1 Room-antenna housing
01/20/1987US4638322 Multiple feed antenna
01/15/1987WO1987000351A1 Axial multipole mobile antenna
01/13/1987US4636797 Dual mode dichroic antenna/aperture
01/06/1987US4635066 Multiband multimode aircraft antenna
12/1986
12/30/1986US4633265 Low frequency/high frequency omnidirectional antenna formed of plural dipoles extending from a common center
12/17/1986EP0204886A2 Antenna for a radio transmitting and receiving apparatus
12/16/1986US4630060 Vertical antenna with decoupling sections for multiband operation
11/1986
11/18/1986US4623894 Interleaved waveguide and dipole dual band array antenna
10/1986
10/28/1986US4620194 Tunable antenna with variable series L-C network
10/23/1986WO1986006216A1 Multiband antenna
10/14/1986US4617573 Method for obtaining a linear cellular array employing cosine-squared antenna patterns
09/1986
09/02/1986US4609866 Electrical systems interference locator
08/1986
08/26/1986US4608572 Broad-band antenna structure having frequency-independent, low-loss ground plane
08/12/1986US4605932 Nested microstrip arrays
08/06/1986EP0189630A1 Low Frequency/high frequency omnidirectional antenna.
08/05/1986US4604628 Parasitic array with driven sleeve element
07/1986
07/23/1986EP0188345A2 Dual frequency band antenna system
07/09/1986EP0186693A1 Telescopic antenna.
06/1986
06/17/1986CA1206256A1 Compact, adjustable antenna
06/10/1986CA1205903A1 Emitting-receiving antennas
06/03/1986US4593289 Multi-band dipole antenna with matching stubs
05/1986
05/27/1986CA1205184A1 Dual-band antenna system of a beam waveguide type
05/21/1986EP0181617A2 Reflector for use in an antenna
05/16/1986EP0165264A4 Dual band transceiver antenna.
04/1986
04/16/1986EP0177630A1 Combination of antennas
03/1986
03/11/1986US4575725 Double tuned, coupled microstrip antenna
02/1986
02/18/1986US4571595 Dual band transceiver antenna
02/18/1986US4571592 Skin effect antennas
02/11/1986US4570165 Adjustable loop and dipole antenna
02/05/1986EP0170154A1 Cross-polarized dual-frequency antenna with the same area coverage for telecommunication satellites
01/1986
01/16/1986WO1986000471A1 Telescopic antenna
12/1985
12/31/1985US4562441 Orbital spacecraft having common main reflector and plural frequency selective subreflectors
12/31/1985CA1198811A1 Antenna apparatus including frequency separator having wide band transmission or reflection characteristics
12/27/1985EP0165264A1 Dual band transceiver antenna
12/17/1985US4559540 Antenna system with plural horn feeds
12/17/1985US4559539 Spiral antenna deformed to receive another antenna
11/1985
11/19/1985US4554554 Quadrifilar helix antenna tuning using pin diodes
11/13/1985EP0161044A1 Dual-frequency microwave antenna
10/1985
10/22/1985US4549185 Combining antenna beams from different frequency bands
10/22/1985CA1195771A1 Tuned small loop antenna with wide frequency range capabilities and method for designing thereof
10/01/1985US4544928 Multifrequency reflector antenna
07/1985
07/16/1985US4529989 Microwave radiation source comprising open cavities energized by two dipoles
07/10/1985EP0148136A1 Monopulse feeder for two separated frequency bands
07/02/1985US4527164 Multiband aerial, especially suitable for a motor vehicle window
06/1985
06/25/1985US4525719 Dual-band antenna system of a beam waveguide type
06/20/1985WO1985002719A1 Dual band transceiver antenna
06/04/1985CA1188410A1 Multiband aerial, especially suitable for a motor vehicle window
05/1985
05/29/1985EP0142555A1 Dual band phased array using wideband elements with diplexer.
05/21/1985US4518968 Dipole and ground plane antennas with improved terminations for coaxial feeders
05/21/1985US4518965 Tuned small loop antenna and method for designing thereof
04/1985
04/02/1985US4509056 Multi-frequency antenna employing tuned sleeve chokes
03/1985
03/26/1985CA1184651A1 Antenna system for different frequency bands
01/1985
01/29/1985US4496952 Trap vertical antenna with parallel L-C circuits for broadbanding
01/15/1985US4494122 Antenna apparatus capable of resonating at two different frequencies
01/02/1985EP0130111A1 Dual frequency radar radiator and antenna using such a radiator
12/1984
12/18/1984US4489331 Two-band microwave antenna with nested horns for feeding a sub and main reflector
12/06/1984WO1984004855A1 Dual band phased array using wideband elements with diplexer