Compact multi-band planar inverted f antenna

摘要: A simple, compact multi-band PIFA including two arm portions, where one portion is grounded at points to form a loop, ground plane, and plastic carrier housing. The antenna radiates same signal from both different efficiencies according the radiated frequency effective length of each arm. made single standard metal sheet by cutting it assembled with plane other parts. In embodiment, folded into 3D U-shape reduce its size for use in mobile communication devices. another penta-band return loss -6B or better measures 40 x 8 mm smaller.