|
| US4435716 | 14 Sep 1981 | 6 Mar 1984 | | Method of making a conical spiral antenna |
| US4742359 | 22 Jul 1986 | 3 May 1988 | TDK Corporation | Antenna system |
| US5212493 | 19 Feb 1992 | 18 May 1993 | Thomson-LGT Laboratoire General Des Telecomm. | Antenna system for reception from direct broadcasting satellites |
| US5309167 | 30 Dec 1992 | 3 May 1994 | Thomson-LGT Laboratoire General des Telecommunications Telediffusion de France S.A. | Multifocal receiving antenna with a single aiming direction for several satellites |
| US5317327 | 26 Jun 1992 | 31 May 1994 | France Telecom Telediffusion de France | Composite antenna for receiving signals transmitted simultaneously via satellite and by terrestrial stations, in particular for receiving digital audio broadcasting radio signals |
| US5444455 | 20 Dec 1993 | 22 Aug 1995 | Thomson Consumer Electronics, S.A. | Helical antenna feed element with switches to select end fire and backfire modes and circular polarization direction |
| US5910790 | 19 Dec 1996 | 8 Jun 1999 | NEC Corporation | Broad conical-mode helical antenna |
| US7388559 | 21 Dec 2006 | 17 Jun 2008 | The Boeing Company | Reflector antenna |
| US8125397 | 9 Jun 2011 | 28 Feb 2012 | Research In Motion Limited | Antenna with near-field radiation control |
| US8223078 | 25 Jan 2012 | 17 Jul 2012 | Research In Motion Limited | Antenna with near-field radiation control |