Planar inverted F antenna and method of making the same

摘要

A multi-band antenna ( 1 ) used in wireless communications includes a radiating portion ( 2 ), a grounding portion ( 4 ), and a connecting portion ( 3 ). The radiating portion ( 2 ) includes a first radiating element ( 21 ) operating at 900 MHz frequency band and a second radiating element ( 22 ) operating at 1800 MHz frequency band. The connecting portion ( 3 ) connects the radiating portion ( 2 ) and the grounding portion ( 4 ). The grounding portion ( 4 ), the radiating portion ( 2 ), and the connecting portion ( 3 ) locate in the same plane.