Patents for H01Q 21 - Aerial arrays or systems (25,127) |
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02/06/1990 | US4899164 Slot coupled microstrip constrained lens |
02/06/1990 | US4899163 Microwave plate antenna in particular for Doppler radar |
02/06/1990 | US4899162 Omnidirectional cylindrical antenna |
02/06/1990 | US4899160 Guidance equipment for microwave landing system |
01/24/1990 | EP0352160A1 Omnidirectional antenna, particularly for the transmission of radio or television signals in the decimetric-wave range, and radiation system formed by an arrangement of these antennas |
01/17/1990 | CN2051402U Multidirectional tv aerial |
01/16/1990 | US4894661 Fish school detecting method or apparatus |
01/16/1990 | US4894114 Process for producing vias in semiconductor |
01/10/1990 | EP0350006A2 Antenna structure used in portable radio device |
01/10/1990 | CN2051017U Compound vibrator tv antenna |
01/09/1990 | US4893129 Planar array antenna |
01/09/1990 | CA1264373A1 Flat wide - band antenna |
01/04/1990 | DE3822081A1 Receiving antenna for ultrashort waves |
01/03/1990 | EP0349069A1 Dual polarised phased array antenna |
01/03/1990 | CN2050659U All frequency band tv antenna |
01/03/1990 | CN1038548A Ultrashort-wave multifrequency antenna for telecontrol and telemetry |
12/28/1989 | DE3821529A1 Medium-waveband transmitting antenna |
12/28/1989 | DE3821215A1 Speed/distance travel sensor for motor vehicle arrangements |
12/27/1989 | EP0348370A2 Low noise block down-converter for direct broadcast satellite receiver integrated with a flat plate antenna |
12/27/1989 | EP0348054A2 Mobile communications antenna |
12/20/1989 | CN2049824U Full frequency channel active aerial for receiving tv |
12/19/1989 | US4888597 Millimeter and submillimeter wave antenna structure |
12/13/1989 | EP0346125A2 Microwave integrated apparatus for satellite broadcasting receiver |
12/13/1989 | EP0345454A1 Microstrip array antenna |
12/12/1989 | US4887090 Vehicle antenna with shiftable gain patterns |
12/07/1989 | DE3917138A1 Ebene antenne Antenna plane |
12/05/1989 | US4885589 Optical distribution of transmitter signals and antenna returns in a phased array radar system |
11/30/1989 | WO1989011311A1 Microwave balloon angioplasty |
11/29/1989 | EP0343322A2 Notch antenna with microstrip feed |
11/23/1989 | DE3728110A1 Antenna array |
11/21/1989 | CA1263181A1 Electromagnetically coupled microstrip antennas having feeding patches capacitively coupled to feedlines |
11/16/1989 | DE3815709A1 Im zeitbereich arbeitendes radarsystem In the time-domain working radar system |
11/15/1989 | EP0342175A2 Dual-polarized printed circuit antenna having its elements, including gridded printed circuit elements, capacitively coupled to feedlines |
11/15/1989 | CN2047845U All-channel television antenna |
11/14/1989 | US4881082 Antenna beam boundary detector for preliminary handoff determination |
11/09/1989 | DE3814382A1 Dual-frequency antenna |
11/08/1989 | EP0340429A1 Electronically scanned antenna |
11/08/1989 | EP0340404A2 Monopole/L-shaped parasitic elements for circularly/eliptically polazized wave transceiving |
11/08/1989 | CN2047455U Thin film type indoor television antenna |
11/07/1989 | US4879570 Broadcasting wave reception antenna |
11/07/1989 | US4879563 Circularly polarized complementary antenna with patch and dipole elements |
10/31/1989 | US4878062 Global position satellite antenna |
10/31/1989 | US4878060 Microwave plane antenna with suspended substrate system of lines and method for manufacturing a component |
10/31/1989 | CA1262574A1 Microstrip antenna compressed feed |
10/31/1989 | CA1262573A1 Microstrip antenna bulk load |
10/31/1989 | CA1262572A1 Satellite receiver |
10/31/1989 | CA1262562A1 Portable radio |
10/18/1989 | CN2046280U Small-size domestic logarithmic cycle period all frequency band antenna |
10/11/1989 | EP0335942A1 Microwave radiometer |
10/10/1989 | US4873528 Device for energizing a non-eccentric in the wide side of a waveguide, and a slotted antenna comprising such a device |
10/05/1989 | WO1989009501A1 Flat plate array antenna |
10/03/1989 | US4872021 Collinear dipole array with inductive and capacitive phasing |
10/03/1989 | US4872020 Slot antenna in circular waveguide |
09/26/1989 | US4870426 Dual band antenna element |
09/26/1989 | US4870423 Method and device for focusing, on one point to be examined, the antennae of an antenna array |
09/26/1989 | CA1261060A1 Planar antenna with patch radiators |
09/26/1989 | CA1260610A1 Antenna network on printed circuit |
09/21/1989 | WO1989008933A1 Circularly polarized microstrip antenna array |
09/19/1989 | US4868576 Extendable antenna for portable cellular telephones with ground radiator |
09/19/1989 | CA1259662A1 Shf receiver |
09/12/1989 | US4866451 Broadband circular polarization arrangement for microstrip array antenna |
09/12/1989 | CA1259401A1 Composite waveguide coupling aperture having a thickness dimension |
09/06/1989 | EP0330699A1 Microwave circuit module, such as an antenna, and method of making same |
09/05/1989 | USH680 TDD antenna--foil formed, substrate loaded laser welded assembly |
09/05/1989 | US4864320 Monopole/L-shaped parasitic elements for circularly/elliptically polarized wave transceiving |
09/05/1989 | US4864319 Radio frequency antenna with small cross-section |
09/05/1989 | US4864309 Microwave radiometer |
08/30/1989 | CN1035208A Bilateral, wide angle receiving and high gain all channel antenna |
08/29/1989 | US4862186 Microwave antenna array waveguide assembly |
08/24/1989 | WO1989007838A1 Microstrip antenna |
08/23/1989 | EP0329079A2 Slotted waveguide Antenna |
08/16/1989 | EP0327965A2 Multi-frequency antenna for satellite communications |
08/16/1989 | CN2043009U Uhf/vhf all channel tv receiving antenna |
08/16/1989 | CN2043008U Indoor tv receiving antenna |
08/15/1989 | US4857939 Mobile communications antenna |
08/15/1989 | US4857938 Planar antenna |
08/10/1989 | WO1989007348A1 Radio antennas |
08/09/1989 | CN1034647A 分布天线系统 Distributed antenna system |
08/03/1989 | DE3802130A1 Antenna system for broadcast radio reception in motor vehicles |
08/02/1989 | EP0325701A1 Antenna structure |
08/01/1989 | US4853704 Notch antenna with microstrip feed |
08/01/1989 | US4853703 Microstrip antenna with stripline and amplifier |
08/01/1989 | US4853702 Radio wave receiving system |
07/26/1989 | EP0325034A2 Antenna Array |
07/25/1989 | US4851857 High-power, end-fed, non-coaxial UHF-TV broadcast antenna |
07/25/1989 | US4851855 Planar antenna |
07/19/1989 | CN1034096A 微波天线的结构 Microwave antenna structure |
07/18/1989 | CA1257693A1 Antenna polarization control device and method for implementing said device |
07/12/1989 | CN2041071U All-channel television omnidirectional plane receiving antenna |
06/28/1989 | EP0322109A2 Distributed antenna system |
06/27/1989 | US4843403 Broadband notch antenna |
06/27/1989 | US4843402 Azimuth array of rotory antennas with selectable lobe patterns |
06/27/1989 | US4843400 Aperture coupled circular polarization antenna |
06/27/1989 | CA1256555A1 Modularized contoured beam phased array antenna |
06/21/1989 | EP0320827A2 Dipole curtain antenna for radiating microwaves |
06/21/1989 | EP0320675A2 Compact dual series waveguide feed |
06/20/1989 | US4841308 Slotted waveguide antenna assembly |
06/15/1989 | WO1989005530A1 Antenna structure for providing a uniform field |
06/14/1989 | EP0319753A1 Exciting or feeding system for a parabolic antenna |
06/13/1989 | US4839663 Dual polarized slot-dipole radiating element |