Abstract
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A compact multiband planar inverted-L antenna (PILA) using a ceramic dielectric disk fed by a microstrip line in the mobile phone for GSM/DCS/PCS/UMTS operation is proposed. In this configuration, the PILA performs the functions of an effective radiator and the coupling feed structure of the ceramic dielectric disk is proposed to excite the PILA. By optimizing the proposed structure parameters, the structure resonates at two different bands to cover the desired multiband operation. In order to determine the performance of varying design parameters on bandwidth and resonance frequency, parametric study is carried out using simulation software HFSS and experimental results. The measured and simulated results show excellent agreement. </para>
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