| 摘要 |
A communication device (100) including an antenna structure is provided, wherein the antenna structure includes a ground element (10), an antenna element (12), and a circuit element group (14). The ground element (10) has a notch (11) at one of its edges (101), and a long edge (t) of the notch (11) is at least two times longer than a short edge (d) of the notch (11). The antenna element (12) includes a metal portion (13) disposed in the notch (11). Two ends (131, 132) of the metal portion (13) are extended away from each other and are positioned substantially at or around two opposite edges of the notch. One end (131) of the metal portion (13) is coupled to the ground element (10), and the other end (132) of the metal portion (13) is a feeding terminal of the antenna element (12). The circuit element group (14) includes at least a capacitive element (141) and an inductive element (142). Thus, a compact dual band half loop antenna is obtained. |
