Communication device and antenna element therein

A communication device, comprising:

• a ground element;
• and
• an antenna element, disposed adjacent to an edge of the ground element, wherein the antenna element comprises:
• a loop metal element, having a first end and a second end, wherein the first end is coupled to a signal source, the second end is coupled to the ground element, the loop metal element comprises a first segment and a second segment, the first segment is separated from the second segment by a gap, the first segment comprises the first end, and the second segment comprises the second end;
• and
• a branch metal element, having a third end and a fourth end, wherein the third end is coupled through an inductive element to a connection point on the loop metal element, the fourth end is open, and a length of the branch metal element is longer than a length of the first segment;
• wherein the gap substantially has a straight-segment shape;
• wherein an angle is formed between an extension straight-line of the straight-segment shape and the edge of the ground element, and the angle is not orthogonal;
• wherein the angle is from 0 to 45 degrees.