An antenna apparatus featuring a simple configuration and operability at a plurality of frequencies which are relatively proximate is provided. Phase shift circuits are connected respectively between feed points of a pair of antenna elements having different resonant frequencies and a radio circuit so...http://www.google.es/patents/US20020000937?utm_source=gb-gplus-sharePatente US20020000937 - Antenna apparatus and a portable wireless communication apparatus using the same
Antenna apparatus and a portable wireless communication apparatus using the same
Número de solicitud: 09/814,264 Número de publicación: US 2002/0000937 A1 Fecha de presentación: 21 Mar 2001 Patente emitida: US6894648 ( Fecha de emisión 17 May 2005)
