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In this paper, a novel solution that can be adopted to enhance the bandwidth of compact multi-band planar inverted-F antennas (PIFA) is introduced. In this approach the ground plane is divided into two parts and connected with an inductor that can be used to adjust the equivalent length of the ground plane. Studies carried out in this paper demonstrate that with the help of this novel bandwidth improvement...
A compact design of a flexible planar inverted-F antenna (PIFA) is proposed for triple-band (GSM/DCS/PCS) mobile phone applications. The main radiating element of the antenna, which generates the GSM and DCS resonant modes, is printed on a flexible printed circuit board (FPCB) and rolled in a form of cylinder. To enhance the bandwidth of the high band, a metallic rod working as a parasitic element...
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