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Tapered PIFA antenna for handsets terminals

A new compact PIFA applicable to PCS system is described. The principle aim in design is to broaden the bandwidth within limited body thickness of mobile phones. To overcome the narrow bandwidth characteristics that is typical of a patch antenna a type of tapered patch is employed. The antenna is designed using Zeland Software Ltd and its characteristics are compared with a basic PIFA with similar volume. For WLAN lower 1.8 GHz-band, bandwidth of about 14 to 16%, and gain 2.2 dBi were achieved.