Patent ID: 7050010

Claim:
A dual-band inverted-F antenna with shorted parasitic elements, comprising: a ground plane, having a first short point, a second short point and a ground point; a first radiating arm, formed in an inverted-L shape and disposed above an edge of the ground plane, the first radiating arm used for inducing a first band, the first radiating arm having a start terminal and an end terminal, the start terminal being vertical to the edge of the ground plane and having a feeding point, the end terminal being an open terminal of the first radiating arm and being parallel to the edge of the ground plane; a second radiating arm, disposed above the edge of the ground plane and being parallel to the edge of the ground plane, the second radiating arm used for inducing a second band, the second radiating arm having a start terminal and an end terminal, the start terminal of the second radiating arm connected to the start terminal of the first radiating arm, the end terminal being an open terminal of the second radiating arm and extending in a reverse direction extending from the start terminal of the first radiating arm to the end terminal of the first radiating arm; a shorting arm, formed in an inverted-L shape and disposed between the first radiating arm and the ground plane, the shorting arm having a first terminal and a second terminal, the first terminal connected to the start terminal of the first radiating arm, the second terminal connected to the first short point, the shorting arm used for electrically connecting the first radiating arm and the second radiating arm to the ground plane; a shorted parasitic arm, formed in an inverted-L shape and disposed above the edge of the ground plane, the shorted parasitic arm having a start terminal and an end terminal, the start terminal being vertical to and connected to the second short point, the end terminal of the shorted parasitic arm extending towards the end terminal of the first radiating arm; and a feeding coaxial cable, for transmitting signals, the feeding coaxial cable having a central conductor and an outer grounding layer, the central conductor connected to the feeding point of the start terminal of the first radiating arm, the outer grounding layer connected to the ground point.