Dual-band and wide-band PIFA with U- and meanderline-shaped slots

This paper describes a novel dual-band planar inverted-F antenna (PIFA) for which the impedance bandwidth can be remarkably improved. The proposed PIFA uses a single feed only. Two top plate geometries, a U-shaped and a novel meanderline-shaped slot, are discussed. An example is given for frequency bands of 2.4 GHz and 5.2 GHz. Simulation based upon the method of moments is used to model the performance of the antennas. Comparisons with measured results on fabricated antenna structures are provided for simulations validation.

I Introduction

The rapid progress in wireless communications promises to make interactive voice, data and video services available anytime and anyplace. Wireless communication systems come in a variety of different sizes ranging from small hand-held devices to wireless local area networks. The integration of different radio modules into the same piece of equipment has given a need for dual-band antennas. The different radio systems might be e.g. Bluetooth and HiperLAN (High-performance radio LAN).