An antenna system adapted for a communication device has a common antenna with a predetermined length, an AM matching circuit matching with the common antenna and an FM matching circuit matching with the common antenna. A switch alternatively electrically connects the common antenna to the AM matching...http://www.google.fr/patents/US20100079352?utm_source=gb-gplus-shareBrevet US20100079352 - ANTENNA SYSTEM AND METHOD FOR MAKING THE SAME
Numéro de demande: 12/242,235 Numéro de publication: US 2010/0079352 A1 Date de dépôt: 30 sept. 2008 Brevet délivré: US7936315 ( Date de délivrance 3 mai 2011)
