Patents
Patents for H01Q 9 - Electrically-short aerials having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements (23,053)
12/1993
12/14/1993US5270725 Rotating antenna with wire dipoles
12/14/1993US5270722 Patch-type microwave antenna
12/14/1993CA1325269C Balanced low profile hybrid antenna
12/09/1993CA2097122A1 Adjustable beam tilt antenna
12/08/1993EP0573319A1 Microwave antenna for transmit-receive systems of vehicles
12/08/1993EP0232314B1 Mobile antenna feed system
12/08/1993CN2149021Y Communication whip antenna adapted for frequency hopping radio station
12/07/1993US5268703 Decorative antenna
12/07/1993US5268702 P-type antenna module and method for manufacturing the same
11/1993
11/30/1993US5267297 Base station for a radio communication system
11/30/1993CA2017511C Microwave responder
11/24/1993CN2147653Y Double-layer multi-direction high gain TV antenna
11/24/1993CN1078834A Switchable inductor for strong currents
11/23/1993US5264862 High-isolation collocated antenna systems
11/18/1993EP0570256A1 Switchable high current induction and antenna tuning circuit using the same
11/16/1993US5262795 Unitary cellular antenna system
11/16/1993US5262791 Multi-layer array antenna
11/16/1993US5262783 Motion detector unit
11/13/1993CA2095792A1 Switchable inductor for strong currents
11/02/1993US5258769 Ominidirectional ground plane effect radiator
11/02/1993US5258727 Microribbon/waveguide transition for plate type antenna
10/1993
10/27/1993CN2144869Y Aerial with plurality of divergent straight elements
10/26/1993US5257032 Antenna system including spiral antenna and dipole or monopole antenna
10/12/1993US5252979 Universal communication system
10/05/1993CA1322786C Mobile communications antenna
10/05/1993CA1322785C Extendable antenna for portable cellular telephones
09/1993
09/29/1993CN1076605A Efficient microwave therapeutic instrument
09/28/1993US5248988 Antenna used for a plurality of frequencies in common
09/22/1993EP0561753A1 An antenna arrangement
09/21/1993US5245745 Method of making a thick-film patch antenna structure
09/16/1993DE4306056A1 Microstrip antenna having circular dielectric substrate - has emitter electrode with central clear volume in which circuit on board is moulded with external connections.
09/14/1993US5245349 Flat-plate patch antenna
09/07/1993US5243353 Circularly polarized broadband microstrip antenna
09/07/1993US5243290 Apparatus and method of logging using slot antenna having two nonparallel elements
09/01/1993EP0557794A1 Glass antenna mounted into the window cutout of a metallic motorcar body
08/1993
08/31/1993US5241321 Dual frequency circularly polarized microwave antenna
08/25/1993EP0557176A1 Feeding device for a plate antenna with two crossed polarizations and array equipped with such a device
08/25/1993CN1075575A Decameter-wave dipole and rotating antenna equipped with this dipole
08/24/1993CA2031866C Mobile radio communication apparatus
08/05/1993WO1993015418A1 Device for wireless transfer of information
08/05/1993DE4202383A1 Hand-held transceiver, e.g. cordless telephone - has electronic circuitry enclosed in banana-shaped frame which supports sliding housings of microphone and earphone
08/04/1993EP0553094A1 Device for information transmission.
08/03/1993USH1219 Electrically small cavity antenna
08/03/1993US5233364 Dual-polarized microwave antenna element
08/03/1993US5233360 Matching device for a microstrip antenna
07/1993
07/27/1993US5231412 Sleeved monopole antenna
07/27/1993US5231407 Duplexing antenna for portable radio transceiver
07/21/1993EP0552095A1 Directional antenna with high gain and with heatproof radiating element
07/20/1993US5229784 Antenna mount
07/20/1993US5229782 Stacked dual dipole MMDS feed
07/20/1993US5229777 Microstrap antenna
07/20/1993CA1320564C Beam powered antenna
07/13/1993US5227807 Dual polarized ambidextrous multiple deformed aperture spiral antennas
07/06/1993US5226061 Transmitters and transmitter circuits
06/1993
06/24/1993WO1993012559A1 Aerial arrangement, especially for communications terminals
06/23/1993CN2137031Y Telephon aerial for car use
06/22/1993US5221930 Adjustable dipole antenna
06/15/1993US5220334 Multifrequency antenna, useable in particular for space telecommunications
06/10/1993WO1993011582A1 Compact broadband microstrip antenna
06/09/1993EP0545762A1 Dipole for decametric waves and rotary antenna using the same
06/09/1993CN2135841Y All-channel tv antenna
06/08/1993US5218372 Wide band spherical antenna with improved impedance-matching circuit
06/01/1993US5216695 Short pulse microwave source with a high prf and low power drain
06/01/1993US5216430 Low impedance printed circuit radiating element
05/1993
05/27/1993DE4138424A1 Receiver for directional HF and UHF radiation fields - has high conductivity quasi-surface element for specified reception and transmission frequency
05/19/1993EP0542595A1 Microstrip antenna device especially for satellite telephone transmissions
05/19/1993EP0542447A1 Flat plate antenna
05/18/1993US5212494 Compact multi-polarized broadband antenna
05/12/1993CN2133057Y Matrix omnidirectional tv. receiving antenna for indoor
05/11/1993US5210542 Microstrip patch antenna structure
05/05/1993EP0540125A1 Satellite antenna system
05/05/1993EP0540124A1 Satellite antenna system
05/05/1993CN2132291Y Receiving antenna for domestic combined full frequency channel tv set
04/1993
04/29/1993DE4236087A1 Tunable antenna system with controllable reactive circuit element - has level detector circuit producing signal which contains component at second harmonic frequency of dither signal
04/21/1993EP0537548A1 Microstrip antenna structure suitable for use in mobile radio communications and method for making same
04/13/1993US5202752 Monolithic integrated circuit device
04/13/1993CA1316219C Card-type radio receiver having slot antenna integrated with housing thereof
04/06/1993US5201072 Tuner for diversity reception having a fixed antenna and a retractive antenna
04/06/1993US5200756 Three dimensional microstrip patch antenna
04/01/1993WO1993006631A1 Adjustable helical antenna for a vhf radio
03/1993
03/30/1993CA1315396C Internally mounted broadband antenna
03/24/1993EP0532854A1 Tuning device for a long wavelength antenna
03/24/1993EP0532632A1 Omni-directional antenna array
03/18/1993DE4130493A1 Aerial radiator with base element as ground surface - has elliptical conductive patch element at selected spacing from base element for resistance matching
03/10/1993EP0216907B1 Multiband antenna
03/09/1993US5192952 Method and apparatus for transmitting electromagnetic signals into the earth from a capacitor
03/04/1993DE4128360A1 Identification appts. for moving vehicles - uses aerials on information carrier and checking device with reflectors for data exchange
03/02/1993US5191352 Radio frequency apparatus
03/02/1993US5191351 Folded broadband antenna with a symmetrical pattern
03/02/1993US5191349 Apparatus and method for an amplitude monopulse directional antenna
02/1993
02/24/1993EP0528775A1 Miniature antenna
02/24/1993EP0514378A4 End fed flat antenna
02/16/1993US5187488 Tunable high-frequency antenna
02/10/1993EP0526643A1 Antenna device
02/10/1993EP0526457A1 Antenna
02/10/1993CN1068912A Decameter-wave antenna with improved resistance to wind
02/03/1993EP0525726A1 Circularly polarized wave microstrip antenna and frequency adjusting method therefor
02/02/1993US5184143 Low profile antenna
02/02/1993CA1313408C Wide band antenna for mobile communications
01/1993
01/28/1993DE4123997A1 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