Antenna structure and wireless communication device using same

A wireless communication device, comprising:

• an antenna structure, the antenna structure comprising:
• a metallic member, the metallic member comprising a front frame, a backboard, and a side frame, the side frame being positioned between the front frame and the backboard, the side frame comprising at least a top portion, a first side portion, and a second side portion, the first side portion and the second side portion being respectively connected to two ends of the top portion;
• a first feed portion;
• a first ground portion;
• and
• a second ground portion;
• wherein the side frame defines a slot, the slot is defined on at least the top portion;
• wherein the front frame defines a second gap and a third gap, the second gap is between two opposite ends of the slot, the third gap is on one of the ends of the slot, the second gap and the third gap communicate with the slot and extend across the front frame;
• wherein a portion of the front frame between the second gap and the third gap forms a first radiating section, the first feed portion, the first ground portion, and the second ground portion are electrically connected to the first radiating section, the first feed portion is positioned between the first ground portion and the second ground portion;
• and
• wherein current enters the first radiating section from the first feed portion, the current flows through the first radiating section and towards the second gap and the first ground portion to generate radiation signals in a first frequency band, the current flows through the first radiating section and towards the third gap and the second ground portion to generate radiation signals in a second frequency band, the current flows through the first radiating section and towards the first gap, the third gap and the second ground portion to generate radiation signals in a third frequency band, a frequency of the first frequency band is higher than a frequency of the third frequency band, the frequency of the third frequency band is higher than a frequency of the second frequency band.