Antenna structure

A wireless communication device comprising an antenna structure comprising:

• a border frame;
• a first feed portion;
• a second feed portion;
• at least two ground portions;
• wherein:
• the border frame is made of metal;
• the border frame comprises an end portion, a first side portion, and a second side portion;
• the first side portion and the second side portion facing each other are respectively coupled to two ends of the end portion perpendicularly;
• a length of the first side portion and the second side portion is longer than a length of the end portion;
• the border frame comprises a first gap and a second gap passing through the border frame, thereby defining a first radiating portion and a second radiating portion;
• the first radiating portion is partially disposed in the first side portion;
• the second radiating portion is entirely disposed in the first side portion;
• the first feed portion is electrically coupled to the first radiating portion to supply an electric current to the first radiating portion;
• the second feed portion is electrically coupled to the second radiating portion to supply an electric current to the second radiating portion;
• the at least two ground portions are disposed between the first feed portion and the second feed portion and separated from each other;
• the at least two ground portions are electrically coupled to the first radiating portion or the second radiating portion to improve isolation between the first radiating portion and the second radiating portion.