| Patents for H01Q 21 - Aerial arrays or systems (25,127) |
|---|
| 03/01/1991 | CA2023442A1 Antenna array |
| 02/27/1991 | EP0414628A2 Individually fed multiloop antennas for electronic security systems |
| 02/27/1991 | EP0414266A1 Stripline patch antenna with slot plate |
| 02/27/1991 | CN2072281U Four-bearing tv aerial |
| 02/26/1991 | CA2021990A1 Individually fed multiloop antennas for electronic security systems |
| 02/21/1991 | WO1991001620A2 Multi-element antenna system and array signal processing method |
| 02/21/1991 | DE3926934A1 Hyperthermie-mikrowellenapplikator zur erwaermung einer begrenzten umgebung in einem dissipativen medium Hyperthermia microwave to heat a limited environment in a dissipative medium |
| 02/20/1991 | CN2071830U All-channel tv receiving antenna |
| 02/19/1991 | US4994817 Annular slot antenna |
| 02/19/1991 | US4994813 Antenna system |
| 02/13/1991 | CN2071391U Composite logarithm periodic tv antenna |
| 02/12/1991 | US4992799 Adaptable antenna |
| 02/06/1991 | EP0411363A2 Double skirt omnidirectional dipole antenna |
| 02/06/1991 | CN1049071A Annular slot antenna |
| 02/05/1991 | US4990926 Microwave antenna structure |
| 02/05/1991 | CA1279926C Horn antenna array phase matched over large bandwidths |
| 01/30/1991 | EP0410725A2 Electronic means for switching antennas to a common bus |
| 01/30/1991 | EP0410083A1 Annular slot antenna |
| 01/30/1991 | EP0409941A1 Ultralight microwave antenna and method of fabrication |
| 01/30/1991 | EP0409927A1 Self-adaptive directional filtering and polarisation device for radioelectric waves. |
| 01/30/1991 | CN1048952A Full frequence channel profile power vibrator combined antenna |
| 01/28/1991 | CA2019017A1 Electronic means of switching antennas to a common bus |
| 01/25/1991 | WO1991001577A1 Multi-resonant laminar antenna |
| 01/24/1991 | CA2017766A1 Annular slot antenna |
| 01/23/1991 | EP0409509A2 Waveguide coupling network |
| 01/23/1991 | EP0409222A2 RF partitioning network for array antenna |
| 01/23/1991 | EP0409221A2 Integrated structure with radiating elements and dividing networks for application to radar antenna |
| 01/22/1991 | US4987425 Antenna support structure |
| 01/16/1991 | EP0408282A2 Waveguide feed network for antenna array |
| 01/15/1991 | US4985708 Array antenna with slot radiators offset by inclination to eliminate grating lobes |
| 01/09/1991 | EP0407243A1 Multiple beam antenna system with active modules and with formation of beams by numerical calculation |
| 01/09/1991 | CN1011168B Microstrip array antenna |
| 01/08/1991 | US4983987 Antenna |
| 01/08/1991 | US4983982 Space fed phased array antenna with dual phase shifter |
| 01/02/1991 | EP0405372A1 Multiple-beam array antenna |
| 01/02/1991 | EP0404905A1 Improved feed waveguide for an array antenna |
| 01/02/1991 | CN1048285A Multi-element antenna system and array signal processing method |
| 01/02/1991 | CN1011104B Bilateral, wide angle receiving and high gain all channel antenna |
| 01/02/1991 | CN1011103B Ultrashort-wave multifrequency antenna for telecontrol and telemetry |
| 12/27/1990 | EP0403910A1 Radiating, diplexing element |
| 12/27/1990 | EP0403894A2 Nested horn radiator assembly |
| 12/26/1990 | CN1011009B Microwave antenna |
| 12/26/1990 | CN1011008B Microwave antenna |
| 12/25/1990 | US4980692 Frequency independent circular array |
| 12/20/1990 | CA2019181A1 Diplexing radiating element |
| 12/19/1990 | EP0403341A1 Rotary dipole antenna for decametric waves |
| 12/18/1990 | US4979186 Time domain radio transmission system |
| 12/18/1990 | US4978965 Broadband dual-polarized frameless radiating element |
| 12/13/1990 | CA2018711A1 Rotating antenna with dipoles for hf waves |
| 12/12/1990 | EP0401252A1 Microstrip antenna. |
| 12/11/1990 | US4977406 For receiving polarized waves |
| 12/06/1990 | DE4009325A1 Generating TACAN antenna radiation diagram - by choice of sidebands fed to antenna elements arranged on circle |
| 12/04/1990 | US4975711 Slot antenna device for portable radiophone |
| 12/04/1990 | US4975708 Time domain electronic antenna beam shaping |
| 12/02/1990 | WO1990015479A1 Acoustically coupled antenna |
| 12/02/1990 | CA2056367A1 Acoustically coupled antenna |
| 12/02/1990 | CA2017463A1 Multi-element antenna system and array signal processing method |
| 11/28/1990 | EP0399524A1 Structure for the realisation of circuits and components, applied to microwave frequencies |
| 11/28/1990 | EP0399206A1 Signal routing system |
| 11/28/1990 | EP0398927A1 Radio antennas. |
| 11/27/1990 | US4973972 Stripline feed for a microstrip array of patch elements with teardrop shaped probes |
| 11/25/1990 | WO1990014720A1 Signal routing system |
| 11/24/1990 | CA2017352A1 Circuit and component realisation structure applied to microwaves |
| 11/22/1990 | EP0398555A2 Lightweight, low profile phased array antenna with electromagnetically coupled integrated subarrays |
| 11/22/1990 | EP0398554A2 Multiband gridded focal plane array antenna |
| 11/22/1990 | DE4014133A1 Planarantenne Planar |
| 11/21/1990 | CN2066205U Satellite tv combined receiving antenna |
| 11/20/1990 | US4972199 Low cross-polarization radiator of circularly polarized radiation |
| 11/16/1990 | CA2014665A1 Lightweight, low profile phased array antenna with electromagnetically coupled integrated subarrays |
| 11/16/1990 | CA2014664A1 Multiband gridded focal plane array antenna |
| 11/15/1990 | DE4013952A1 Flacher schlitzgruppenstrahler Shallow slit group spotlights |
| 11/15/1990 | DE3915048A1 Electronically phase controlled antenna - has antenna elements in groups coupled to distributors with polariser switches |
| 11/14/1990 | CN1046998A Flat slot array antenna for te mode wave |
| 11/13/1990 | US4970522 Waveguide apparatus |
| 11/07/1990 | EP0396033A2 Vehicle windscreen antenna for frequencies above the high frequency range |
| 10/31/1990 | EP0394489A1 Array antenna and a feeder device therefor |
| 10/31/1990 | CN2064943U Multiple frequency channel universal receiving antenna for t.v. |
| 10/30/1990 | US4967077 Multiple aperture arrays for optical and radio frequency signals |
| 10/28/1990 | CA2015775A1 Te mode wave flat slot array antenna |
| 10/25/1990 | WO1990013049A1 Short-range radar transceiver employing a fet oscillator |
| 10/24/1990 | EP0393103A1 Antenna structure for providing a uniform field. |
| 10/23/1990 | US4965605 Lightweight, low profile phased array antenna with electromagnetically coupled integrated subarrays |
| 10/23/1990 | US4965588 Electronically scanned antenna |
| 10/16/1990 | US4963892 Microwave plane antenna with two arrays which have beams aligned in the same direction |
| 10/16/1990 | US4963891 Planar antenna |
| 10/16/1990 | US4963879 Double skirt omnidirectional dipole antenna |
| 10/03/1990 | EP0390350A2 Low cross-polarization radiator of circularly polarized radiation |
| 10/03/1990 | EP0389619A1 Curved plastic body with circuit pattern and method of making. |
| 10/03/1990 | EP0389494A1 Automatic polarization control system for tvro receivers |
| 09/25/1990 | US4959658 Flat phased array antenna |
| 09/25/1990 | US4959657 Omnidirectional antenna assembly |
| 09/20/1990 | WO1990010980A1 Time domain radio transmission system |
| 09/20/1990 | WO1990010959A1 Combination dipole array and slot array antenna |
| 09/19/1990 | EP0388377A1 An arrangement for supplying power to a hollow wave-guide intended for electromagnetic microwaves |
| 09/19/1990 | EP0314707A4 Wire bonds and electrical contacts of an integrated circuit device |
| 09/18/1990 | US4958167 Ultra-broadband impedance matched electrically small complementary signal radiating structures using thin wire elements and an impedance optimizing feed circuit |
| 09/18/1990 | US4958166 Amplitude monopulse slotted array |
| 09/18/1990 | US4958165 Circular polarization antenna |
| 09/18/1990 | US4958162 Near isotropic circularly polarized antenna |
| 09/13/1990 | DE4005982A1 Horizontal broad band antenna - has operation over 5 short wave bands with low noise |