Patent ID: 8228244
Filing Date: 2012-07-24
Classification: H01Q

Abstract:
1. A dual-band mobile communication device, comprising: a circuit board; a ground plane, located on the circuit board, the ground plane having an edge; an antenna element, located on the circuit board or placed adjacent to the circuit board, the antenna element having a first operating band and a second operating band; and a dual-band inductively-coupled element, located at the edge of the ground plane, the dual-band inductively-coupled element exciting two different resonant modes at two specific frequencies corresponding to the first operating band and the second operating band of the antenna element, respectively, the dual-band inductively-coupled element comprising: a connection element; a first metal plate, electrically connected to the ground plane through the connection element; an inductive element; and a second metal plate, electrically connected to the inductive element.