Dual-Band Antenna with U-Shaped Open Stub for WLAN/WIMAX Applications

A compact coplanar waveguide (CPW)-fed triple-band planar antenna applied to WALN and WiMAX applications is proposed. The antenna, which occupies an overall dimension of 38 × 36 × 1.6mm3, is simply composed of a U-shaped radiating patch and a U-shaped open stub. It has good omnidirectional radiation patterns in the azimuth plane and reaches 2.3 dBi at both 2.45 GHz and 3.5 GHz, 3.5 dBi at the band of 5.2 GHz and 3.7 dBi at the band of 5.8 GHz. The designed antenna is simulated by HFSS software, and a good agreement with experimental results is demonstrated.

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