Compact triband CPW-fed F-shaped monopole antenna with inverted L-slot for 2.1-GHz/WLAN/WiMAX applications

摘要

A novel coplanar waveguide (CPW)-fed F-shaped monopole antenna with inverted L-slot for 2.1-GHz band, Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) applications is proposed and investigated in this paper. The proposed antenna is composed of a CPW-fed F-shaped planar monopole and an inverted-L slot, which occupies a compact size of 25 (W) × 40 (L) mm2 including the ground plane. By adjusting the dimensions of the monopole and slot, three desired resonant frequencies can be achieved and tuned independently. The antenna exhibits three resonances covering the 2.1-GHz band, 5.2/5.8 GHz WLAN bands and 3.5/5.5 GHz WiMAX bands. The parameters which affect the performance of the antenna in terms of its frequency domain characteristics are studied in this paper. Details of the antenna design and simulation results are presented and discussed.