Antenna structure and wireless communication device using same

A wireless communication device comprising:

• an antenna structure, the antenna structure comprising:
• a metal housing, the metal housing comprising a front frame, a backboard, and a side frame, the side frame being positioned between the front frame and the backboard;
• wherein the side frame defines a slot, the front frame defines a first groove and a first gap, the first groove and the first gap both in communication with the slot and extend to cut across the front frame;
• the slot, the first groove, and the first gap separate a first antenna section from the metal housing;
• a first ground portion, one end of the first ground portion electrically connected to the first antenna section, another end of the first ground portion being grounded;
• a second ground portion, the second ground portion spaced apart from the first ground portion, one end of the second ground portion electrically connected to the first antenna section, and another end of the second ground portion being grounded;
• a first feed source;
• and
• a coupling portion, one end of the coupling portion electrically connected to the first feed source;
• wherein the coupling portion is spaced apart from the first antenna section, current from the first feed source is coupled to the first antenna section through the coupling portion.