Communication device with metal-frame half-loop antenna element

A communication device comprising:

• a ground plane having a first edge;
• and
• an antenna element comprising a radiation metal strip and a feed metal line, the radiation metal strip and the feed metal line being extended along the first edge, the feed metal line being arranged between the radiation metal strip and the first edge;
• wherein the radiation metal strip and the ground plane are separated by a clearance region, the ground plane is not disposed in the clearance region, the radiation metal strip has a first end and a second end, the radiation metal strip is divided into a first metal strip and a second metal strip by a gap, the first metal strip has the first end, the first end is electrically connected to the ground plane by a first metal section, the second metal strip has the second end, the second end is electrically connected to the ground plane by a second metal section, the first metal strip is coupled to a first connection point on the feed metal line through a first capacitive element, the second metal strip is coupled to a second connection point on the feed metal line through a second capacitive element, the feed metal line has a third connection point as a feeding point of the antenna element, and the second connection point is located between the first connection point and the third connection point.