| Patents for H01Q 21 - Aerial arrays or systems (25,127) |
|---|
| 06/13/1989 | US4839662 Composite waveguide coupling aperture having a varying thickness dimension |
| 06/13/1989 | US4839659 Microstrip phase scan antenna array |
| 06/08/1989 | DE3740142A1 Surveillance radar method with height finding |
| 06/06/1989 | US4837583 Device for adjusting the polarization of an antenna and a method for the practical application of said device |
| 05/31/1989 | CN2038670U Wall hanging tv antenna |
| 05/24/1989 | EP0317414A1 Suspended stripline plate antenna without positioning rods comprising self-supporting ground planes provided with thick radiating slots |
| 05/24/1989 | DE3738707A1 Antenna arrangement |
| 05/24/1989 | DE3738706A1 Antenna arrangement for aircraft |
| 05/24/1989 | CN2038282U Inductance coupling v u compatible antenna |
| 05/23/1989 | US4833485 Radar antenna array |
| 05/23/1989 | US4833482 Circularly polarized microstrip antenna array |
| 05/10/1989 | EP0314707A1 Wire bonds and electrical contacts of an integrated circuit device. |
| 05/09/1989 | US4829591 Portable radio |
| 05/09/1989 | US4829314 Microwave plane antenna simultaneously receiving two polarizations |
| 05/09/1989 | US4829309 Planar antenna |
| 05/09/1989 | CA1253960A1 Miniature gain antenna |
| 05/03/1989 | EP0313623A1 Microwave lens and array antenna |
| 05/02/1989 | US4827276 Microwave antenna |
| 05/02/1989 | US4827270 Antenna device |
| 05/02/1989 | US4827269 Apparatus to maintain arbitrary polarization stabilization of an antenna |
| 04/26/1989 | EP0312989A2 Microwave antenna structure |
| 04/25/1989 | US4825219 Slot antenna in circular waveguide |
| 04/25/1989 | US4825216 High efficiency optical limited scan antenna |
| 04/25/1989 | US4825172 Use in a microwave antenna system |
| 04/19/1989 | EP0311928A2 Antenna array |
| 04/18/1989 | US4823144 Apparatus for transmitting and/or receiving microwave radiation |
| 04/18/1989 | US4823136 Transmit-receive means for phased-array active antenna system using rf redundancy |
| 04/18/1989 | US4823135 Satellite receiver having improved polarization plane determination means |
| 04/18/1989 | CA1252884A1 Space amplifier |
| 04/13/1989 | DE3732986A1 Antenna array having patch aerial elements |
| 04/12/1989 | CN1003903B Auto-control method and auto-controller of common tv antenna system |
| 04/11/1989 | US4821044 Waveguide slot array termination and antenna system |
| 04/04/1989 | US4819004 Printed circuit array antenna |
| 04/04/1989 | US4819003 Flat circular unidirectional microwave antenna |
| 04/04/1989 | US4818958 Processes sum and difference signals |
| 03/29/1989 | EP0308830A2 Antenna system |
| 03/29/1989 | CN2035142U Uhf/vhf-compatible high-gain all-channel antenna |
| 03/28/1989 | US4816838 Portable receiving antenna system |
| 03/28/1989 | US4816837 Automobile antenna system |
| 03/28/1989 | US4816836 Conformal antenna and method |
| 03/28/1989 | US4816835 Planar antenna with patch elements |
| 03/23/1989 | WO1989002662A1 Microwave circuit module, such as an antenna, and method of making same |
| 03/23/1989 | WO1989002292A1 Method and apparatus for hyperthermia treatment |
| 03/23/1989 | WO1988010523A3 Deterministic thinned aperture phased antenna array |
| 03/22/1989 | EP0307470A1 Equal power amplifier system for active phase array antenna and method of arranging same |
| 03/22/1989 | EP0307445A1 Plural level beam-forming network. |
| 03/21/1989 | US4814777 Dual-polarization, omni-directional antenna system |
| 03/15/1989 | EP0307338A1 Microwave plate antenna, especially for a Doppler radar |
| 03/15/1989 | EP0306654A2 Angular error detecting device |
| 03/15/1989 | EP0204804B1 Omnidirectional antenna array |
| 03/14/1989 | US4813057 Time domain radio transmission system |
| 03/14/1989 | US4812855 Dipole antenna with parasitic elements |
| 03/14/1989 | US4812853 Thin metallic layer coated onto one side of strip dielectric; microwaves |
| 03/07/1989 | US4811032 Method for monitoring and controlling an antenna selector and antenna selector for carrying out the method |
| 03/07/1989 | US4811027 Broad-band directional antenna |
| 03/02/1989 | DE3827956A1 Schlitzantenne Slot antenna |
| 03/01/1989 | EP0304668A1 Dipole antenna curtain for the transmission of short waves |
| 03/01/1989 | CN1031451A 缝隙天线 Slot antenna |
| 02/28/1989 | US4809009 Resonant antenna |
| 02/23/1989 | WO1989001710A1 Microwave radiometer |
| 02/22/1989 | CN2033157U Omnidirectional receiving antenna for tv |
| 02/15/1989 | CN1031159A Microwave antenna |
| 02/14/1989 | US4804965 Flat wide-band antenna |
| 02/14/1989 | CA1250046A1 Microwave plane antenna for receiving circularly polarized waves |
| 02/14/1989 | CA1250045A1 Microwave plane antenna |
| 02/07/1989 | US4803495 Radio frequency array antenna with energy resistive material |
| 02/07/1989 | US4803494 Wide band antenna |
| 02/07/1989 | US4803447 Three terminal remotely controlled SPDT antenna switch |
| 02/01/1989 | EP0301580A2 Microwave antenna |
| 02/01/1989 | EP0301216A2 Broadband notch antenna |
| 01/31/1989 | US4801943 Plane antenna assembly |
| 01/26/1989 | WO1989000774A1 Transmitting and reception antenna |
| 01/26/1989 | WO1988007786A3 Equal power amplifier system for active phase array antenna and method of arranging same |
| 01/26/1989 | DE3723179A1 Antenna array |
| 01/25/1989 | EP0300024A1 Slot antenna in circular waveguide. |
| 01/17/1989 | USRE32835 Polarized signal receiver system |
| 01/17/1989 | CA1249053A1 Automobile antenna system |
| 01/10/1989 | US4797682 Deterministic thinned aperture phased antenna array |
| 01/10/1989 | CA1248606A1 Transponder systems |
| 01/05/1989 | DE3820248A1 Keyless actuating system for a vehicle-locking device |
| 12/29/1988 | WO1988010523A2 Deterministic thinned aperture phased antenna array |
| 12/29/1988 | WO1988010521A1 Collapsible receiving antenna |
| 12/28/1988 | EP0296838A2 Monolithic microwave transmitter/receiver |
| 12/20/1988 | US4792939 Duplex radio communication transceiver |
| 12/20/1988 | US4792810 Microwave antenna |
| 12/20/1988 | US4792808 Ellipsoid distribution of antenna array elements for obtaining hemispheric coverage |
| 12/14/1988 | EP0295003A2 Antenna |
| 12/13/1988 | US4791429 Multimode omniantenna with flush mount |
| 12/13/1988 | US4791421 Transmit-receive module for phased-array antennas |
| 12/06/1988 | US4788766 Method of fabricating a multilayer circuit board assembly |
| 11/29/1988 | US4788552 Wave guide element for an electrically controlled radar antenna |
| 11/29/1988 | CA1245760A1 Microstrip circuit temperature compensation |
| 11/23/1988 | EP0291920A1 Airborne radar antenna |
| 11/17/1988 | WO1988009066A1 Microwave lens and array antenna |
| 11/17/1988 | WO1988009056A1 Wire bonds and electrical contacts of an integrated circuit device |
| 11/17/1988 | EP0291233A2 Multimode omni antenna with flush mount |
| 11/15/1988 | US4785303 Omnidirectional dipole loop antenna array |
| 11/15/1988 | US4785302 Automatic polarization control system for TVRO receivers |
| 11/15/1988 | CA1244919A1 Microwave reflection survey equipment and technique |
| 11/09/1988 | EP0289553A1 Monopulse antenna with improved sidelobe suppression. |