Abstract
The quad-band antenna, which is composed of two compact dual-band antennas, is presented for portable media player (PMP) applications. The antenna for the broadcasting dual band (DVB-H UHF: 470-862 MHz; L: 1452-1492 MHz) is composed of a planar inverted-F antenna (PIFA) with self-complementary structure (SCS) for the broadband performance. The measured operation bandwidth of the antenna (VSWR <; 4) is 500 MHz (370-870 MHz) at UHF band and 220 MHz (1300-1520 MHz) at L band. The two-channel WLAN multiple-input-multiple-output (MIMO) antenna with high isolation performance for the telecommunication dual band (WLAN 11b: 2.4-2.5 GHz; 11a: 5.15-5.825 GHz) is composed of a PIFA operating at 2-GHz band and a loop antenna operating at 5-GHz band. The proposed antennas are fabricated in a PMP case (ε <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</sub> = 3.2 ).
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