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)
06/1997
06/25/1997CN1152805A Aerial assembly for radio communication device
06/19/1997WO1997022159A1 Dual polarized array antenna with central polarization control
06/18/1997EP0778988A1 Antenna assembly
06/18/1997EP0716774B1 A folded dipole antenna
06/12/1997DE19649215A1 Antenne Antenna
06/12/1997DE19546010A1 Combined flat antenna for vehicle global positioning system and mobile radio
06/11/1997EP0778633A1 Chip antenna having dielectric and magnetic material portions
06/11/1997CN1151621A Broadband antenna using semicircular radiator
06/04/1997EP0777297A1 A whip antenna
06/04/1997EP0777296A1 Microstrip type antenna having small size and capable of changing gain
06/04/1997EP0777295A2 Antenna device having two resonance frequencies
06/04/1997EP0776530A1 Method and antenna for providing an omnidirectional pattern
06/03/1997US5635942 Microstrip antenna
05/1997
05/29/1997WO1997019488A1 Antenna
05/28/1997CN1150704A Wide band small antenna
05/27/1997US5633646 Mini-cap radiating element
05/27/1997US5633645 Patch antenna assembly
05/27/1997US5633613 Modulator-coupled transmission structure and method
05/27/1997CA2116475C Antenna for a radio communication apparatus
05/20/1997US5631660 Antenna module for a portable radio equipment with a grounding conductor
05/20/1997US5631659 Microstrip patch antennas with radiation control
05/13/1997US5629713 Horizontally polarized antenna array having extended E-plane beam width and method for accomplishing beam width extension
05/13/1997US5629712 Vehicular slot antenna concealed in exterior trim accessory
05/09/1997WO1997016865A1 Transponder employing microstrip double patch antenna
05/07/1997DE19540881A1 Coaxial vertical emitter with shortened coaxial cable
05/07/1997DE19540880A1 Shortened closed loop antenna using coaxial trap principle
05/07/1997CN2253874Y Spiral flexible antenna
05/06/1997US5627551 Antennas for surface mounting and method of adjusting frequency thereof
05/06/1997US5627550 Wideband double C-patch antenna including gap-coupled parasitic elements
05/02/1997EP0770271A1 Planar antenna on electrically-insulating sheet
04/1997
04/29/1997US5625367 Variable capacitance antenna for multiband reception and transmission
04/24/1997WO1997015093A1 Method of mass producing printed circuit antennas
04/22/1997US5623271 Low frequency planar antenna with large real input impedance
04/17/1997WO1997014193A1 Volume-loaded short dipole antenna
04/15/1997US5621422 Spiral-mode microstrip (SMM) antennas and associated methods for exciting, extracting and multiplexing the various spiral modes
04/15/1997US5621420 Duplex monopole antenna
04/09/1997EP0767510A1 Surface mounting antenna and antenna apparatus
04/08/1997US5619218 Common aperture isolated dual frequency band antenna
04/03/1997WO1997012417A1 Broad band antenna
04/02/1997EP0766343A2 Broadband antenna using a semicircular radiator
04/02/1997EP0766342A1 Antenna element for ultra-high frequencies
04/02/1997EP0766341A1 Surface mounting antenna and communication apparatus using the same antenna
04/02/1997EP0766340A2 Surface mounting antenna and communication apparatus using the same antenna
04/01/1997US5617103 Ferroelectric phase shifting antenna array
03/1997
03/27/1997WO1997011445A1 Consumption measurement system for remote reading
03/27/1997WO1997008774A3 Printed antenna
03/27/1997DE19624273A1 Verbrauchserfassungssystem zur Fernablesung Metering system for remote reading
03/26/1997EP0765001A1 Chip antenna
03/26/1997EP0764998A1 Antenna device
03/25/1997US5614917 RF sail pumped tuned antenna
03/25/1997CA2114661C Antenna for matched transmission system
03/20/1997WO1997010624A1 Self-tuning material and method of manufacturing the same
03/19/1997EP0710403B1 Aerial arrangement
03/19/1997CN1145537A Resonance antenna
03/18/1997US5612705 Wide-banded base station antenna
03/18/1997US5612704 Retractable antenna
03/18/1997US5611547 Elongated seal assembly for sealing well tubing-to liner annulus
03/12/1997EP0762537A2 Chip antenna
03/12/1997EP0762536A2 Chip antenna
03/12/1997EP0761020A1 Modular electronic sign system
03/06/1997WO1997008774A2 Printed antenna
03/05/1997CN1144592A Phased array cellular base station and associated methods for enhanced power efficiency
03/05/1997CN1144407A Circularly polarized backfire antenna
03/04/1997US5608416 Portable rapidly erectable discone antenna
03/04/1997US5608415 High-frequency signal transmission system with conical conductors and bias resistor
03/04/1997US5608379 Deactivatable EAS tag
02/1997
02/26/1997CN2248402Y 短波自适应伸缩天线 Shortwave adaptive telescopic antenna
02/25/1997US5606327 Electrical antenna assembly and electrical device including same
02/25/1997CA2036677C Extendable antenna for a radio transceiver
02/20/1997WO1997006578A1 Fractal antennas, resonators and loading elements
02/18/1997US5604507 Wide-banded mobile antenna
02/18/1997US5604506 Dual frequency vertical antenna
02/12/1997EP0757880A1 Phased array cellular base station and associated methods for enhanced power efficiency
02/05/1997EP0757405A1 Antenna
02/04/1997US5600340 Wideband omni-directional antenna
02/04/1997US5600339 Antenna
02/04/1997US5600335 High-power broadband antenna
02/04/1997US5600242 Electrically small broadband high linear dynamic range deceiver including a plurality of active antenna elements
01/1997
01/29/1997CN2246335Y Omnidirectional full frequency channel television antenna
01/28/1997US5598174 Printed sleeve antenna
01/28/1997US5598168 High efficiency microstrip antennas
01/23/1997WO1997002623A1 A dual polarized, heat spreading rectenna
01/23/1997WO1997002622A1 Antenna assembly
01/23/1997WO1997002621A1 Antenna assembly and communications device
01/23/1997CA2226250A1 Antenna assembly and communications device
01/22/1997CN1140910A Antenna apparatus and portable radio apparatus
01/21/1997CA2063713C Microstrip radiator for circular polarization free of welds and floating potentials
01/15/1997EP0753897A2 Wideband double C-patch antenna including gap-coupled parasitic elements
01/15/1997EP0553094B1 Device for information transmission
01/15/1997CN2245275Y Special oscillator TV receiving antenna
01/14/1997US5594459 Retractable/extensible antenna with inner and outer sections having a feed point coil and end mounted coil
01/14/1997US5594456 Gas tube RF antenna
01/14/1997US5594455 Bidirectional printed antenna
01/09/1997WO1997001197A1 Method and antenna for providing an omnidirectional pattern
01/07/1997US5592185 Antenna apparatus and antenna system
01/07/1997US5592184 Miniature antenna
01/07/1997US5592183 For transmitting and receiving rf signals
01/02/1997DE19523694A1 Planar antenna, esp. for frequencies in GHz region
01/01/1997CN1139300A Apparatus capable of receiving circularly polarized signals
12/1996
12/31/1996US5589843 Antenna system with tapered aperture antenna and microstrip phase shifting feed network