Advances in Antenna Technology for Wireless Handheld Devices

<table>Sequence showing the antenna concept. (a) A slot on the ground plane is tuned at 1900 GHz (band #2); (b) PIFA is tuned at 900 MHz (band #1); (c) parallel excitation of both antennas (PIFA + slot); (d) reflection coefficient of the antenna system. Ground plane is <svg height="11.125" id="M28" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 119.8125 11.125" width="119.8125" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> for all cases.</table>

International Journal of Antennas and Propagation

Advances in Antenna Technology for Wireless Handheld Devices

Figure 17