| Patents for H01Q 7 - Loop aerials with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop (7,833) |
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| 09/20/1994 | US5349357 Circuit arrangement for obtaining a constant field strength of an HF signal radiated by a transmitting device with exchangeable antenna |
| 09/14/1994 | EP0615304A1 Noise cancelling in antennae and the like |
| 09/14/1994 | EP0615217A1 Electronic article surveillance system with enhanced geometric arrangement |
| 09/06/1994 | US5345247 Five-way antenna system |
| 09/01/1994 | WO1994019873A1 Receiver having concealed external antenna |
| 09/01/1994 | CA2117919A1 Receiver having concealed external antenna |
| 08/31/1994 | CN2175973Y Magnetic antenna wave filter |
| 08/23/1994 | US5341148 High frequency multi-turn loop antenna in cavity |
| 08/17/1994 | EP0610546A1 An antenna system |
| 08/09/1994 | US5337063 Antenna circuit for non-contact IC card and method of manufacturing the same |
| 08/03/1994 | EP0608966A2 Adjustable reactance device and method |
| 08/03/1994 | CN2173459Y Round flat ring composite all-position TV antenna |
| 08/03/1994 | CN1090409A Method and circuit configuration for electronically labelling articles |
| 07/21/1994 | WO1994016471A1 Transmit and receive antenna having angled crossover elements |
| 06/14/1994 | US5321412 Antenna arrangement with reduced coupling between transmit antenna and receive antenna |
| 06/09/1994 | WO1994013028A1 Tunable microwave devices incorporating high temperature superconducting and ferroelectric films |
| 06/09/1994 | CA2150690A1 Tuneable microwave devices incorporating high temperature superconducting and ferroelectric films |
| 06/07/1994 | US5319354 Antenna structure for communicating with an electronic tag implanted in a pneumatic tire |
| 06/01/1994 | EP0599434A1 Method and circuit for electronically marking of articles |
| 05/19/1994 | DE4338554A1 Non-contact electronic identification tag - has switchable array of passive detection and burn-out resonator elements, which receive burn-out frequency for irreversibly changing state of resonator for coding |
| 05/03/1994 | CA2004365C Reactance buffered loop antenna and method for making the same |
| 04/27/1994 | EP0594375A2 Translucent article having induction loop antenna |
| 04/26/1994 | US5307081 Radiator for slowly varying electromagnetic waves |
| 04/19/1994 | US5305002 Hinged read-out antenna system |
| 04/06/1994 | EP0590955A2 Multiple band antenna |
| 04/06/1994 | EP0590589A1 Transponder antenna with shield |
| 04/05/1994 | US5300937 Loop antenna |
| 04/05/1994 | US5300936 Multiple band antenna |
| 04/05/1994 | CA1328310C Antenna structure used in portable radio device |
| 03/31/1994 | DE4232827A1 Circularly polarised local antenna arrangement for nuclear spin tomography appts. - has array of three or more linearly polarised coils overlapped to achieve geometric decoupling. |
| 03/30/1994 | EP0588944A1 An improved miniature transponder device |
| 03/29/1994 | US5298894 Utility meter transponder/antenna assembly for underground installations |
| 03/22/1994 | US5296866 Active antenna |
| 03/16/1994 | CN2159069Y Pocket flat antenna |
| 03/15/1994 | CA1327841C Load isolated article surveillance system and antenna assembly |
| 03/09/1994 | EP0586083A2 Collar transponder |
| 03/02/1994 | EP0584882A1 Loop antenna |
| 02/08/1994 | US5285210 Double loop antenna with reactance elements |
| 02/02/1994 | CN2155079Y Disk-like tv emission antenna with wide frequency band low standing-wave ratio |
| 02/01/1994 | CA1326699C Portable radio equipment having a display |
| 01/25/1994 | US5281941 Coil form and coil for antenna coils, or the like |
| 01/25/1994 | US5281855 Integrated circuit device including means for facilitating connection of antenna lead wires to an integrated circuit die |
| 01/19/1994 | EP0578701A1 Article sorting system |
| 01/18/1994 | US5280645 Adjustable wristband loop antenna |
| 01/18/1994 | US5280296 Antenna system for a wrist carried selective call receiver |
| 01/18/1994 | US5280249 Circularly polarizing local antenna for a nuclear magnetic resonance apparatus |
| 01/12/1994 | EP0578561A1 Receiver with internal ferrite antenna |
| 01/05/1994 | DE4220131A1 Active reception antenna using conductor loop - has interruption points in conductor loop and associated complex impedance providing reception min. in defined spatial direction |
| 12/21/1993 | US5272466 Method and apparatus for defining a perimeter |
| 12/15/1993 | EP0274526B1 Transponder device |
| 12/14/1993 | US5270717 Extended range RF-ID transponder |
| 12/14/1993 | CA1325269C Balanced low profile hybrid antenna |
| 12/09/1993 | DE4218635A1 HF receiver antenna for NMR tomograph - has at least one capacitor contg. layers of superconducting and dielectric material |
| 12/07/1993 | US5268699 Data communication receiver utilizing a loop antenna having a hinged connection |
| 11/16/1993 | US5263183 Radio antenna tuning circuit |
| 11/16/1993 | US5262772 Transponder scanner |
| 11/11/1993 | WO1993022803A1 Antenna coupling apparatus for a cordless telephone |
| 10/28/1993 | WO1993021668A1 Coil construction |
| 10/27/1993 | EP0566970A1 Antenna especially for vehicles |
| 10/26/1993 | US5257033 Transmitter with a reduction of power of signals transmitted at harmonics |
| 10/20/1993 | EP0557297A4 Method and apparatus for modulating and dectecting a subcarrier signal for an inductively coupled transponder |
| 10/20/1993 | CN2144349Y All-frequency channel double-loop deformed aerial |
| 10/13/1993 | EP0565016A1 Low profile eliptically polarised antenna |
| 10/12/1993 | US5253226 Radio-controlled timepiece with antenna coil |
| 10/05/1993 | US5250944 Antenna and driving circuit for transmitting and receiving images to and from a passive transponder |
| 09/28/1993 | US5248989 Magnetic field concentrator |
| 09/16/1993 | WO1993018493A1 Method of making a radio-frequency detection label with a minimum number of electronic components |
| 09/01/1993 | EP0557297A1 Method and apparatus for modulating and dectecting a subcarrier signal for an inductively coupled transponder |
| 08/11/1993 | EP0554581A1 Method for producing a flat flexible antenna core for a chip transponder to be incorporated in a badge or similar object, and a thus produced antenna core |
| 08/11/1993 | EP0554486A1 An HF antenna and a method of producing it and furthermore a transponder system with such an HF antenna |
| 08/03/1993 | CA1321019C Antenna for tire monitoring device |
| 07/29/1993 | DE4202009A1 Transceiver broad-band antenna for radio identification - has phase-shifter connected to resonant-circuit capacitor and inductors wound on ellipsoid core |
| 07/27/1993 | US5231411 One piece millimeter wave phase shifter/antenna |
| 07/13/1993 | US5227805 Antenna loop/battery spring |
| 07/13/1993 | US5227804 Antenna structure used in portable radio device |
| 07/07/1993 | EP0549832A1 Built-in chip transponder with antenna coil |
| 07/06/1993 | US5225847 Automatic antenna tuning system |
| 07/06/1993 | US5225846 Wrist carried wireless instrument |
| 06/29/1993 | US5223851 Apparatus for facilitating interconnection of antenna lead wires to an integrated circuit and encapsulating the assembly to form an improved miniature transponder device |
| 06/23/1993 | EP0547563A1 Printed circuit board antenna |
| 06/15/1993 | US5220339 Antenna having a core of an amorphous material |
| 06/15/1993 | US5220338 Antenna element |
| 06/15/1993 | US5220337 Notched nested cup multi-frequency band antenna |
| 06/08/1993 | US5218371 Antenna array for enhanced field falloff |
| 06/02/1993 | EP0544136A1 Antenna structure adapted for communication with an electronic tag implanted in a tire |
| 05/26/1993 | EP0543645A1 Embedded antenna for communication devices |
| 05/25/1993 | US5214437 For search and rescue signalling |
| 04/28/1993 | EP0538485A1 Antenna and small portable radio device |
| 04/27/1993 | US5206657 Printed circuit radio frequency antenna |
| 03/30/1993 | US5198826 Wide-band loop antenna with outer and inner loop conductors |
| 03/24/1993 | CN2128780Y Nested-ring antenna |
| 03/23/1993 | US5196845 Antenna for tire monitoring device |
| 03/17/1993 | EP0531853A2 Radio clockwork |
| 02/24/1993 | EP0528775A1 Miniature antenna |
| 01/27/1993 | EP0524263A1 Antenna assembly |
| 01/21/1993 | WO1993001658A1 Radio receiving circuits |
| 01/20/1993 | EP0523272A1 Circuit arrangement for obtaining a constant field strength of an HF signal radiated by a transmitting device with exchangeable antenna |
| 01/20/1993 | EP0523271A1 Circuit arrangement for antenna coupling |
| 12/23/1992 | WO1992022827A1 An improved miniature transponder device |
| 12/23/1992 | CN1019624B Extendible omnibearing wide-band antenna |