Patent ID: 8866683

Claim:
A communication device, comprising: a ground element; an antenna element, comprising: a first radiating portion, wherein one end of the first radiating portion is a feeding end of the antenna element, and the other end of the first radiating portion is an open end; and a second radiating portion, comprising a first portion and a second portion, wherein a first end of the first portion is shorted-circuited to the ground element, a first end of the second portion is an open end, a length of the second radiating portion is greater than a length of the first radiating portion, and the second radiating portion surrounds the open end of the first radiating portion; and a reconfigurable circuit element group, coupled between a second end of the first portion and a second end of the second portion of the second radiating portion, wherein the reconfigurable circuit element group comprises at least two branches, and the reconfigurable circuit element group selectively opens and closes the branches such that the antenna element operates in different bands.