DESIGN OF CPW-FED MONOPOLE ANTENNA WITH L- SHAPE AND T-SHAPE FOR WLAN/WI-MAX APPLICATIONS
Keywords:
Ground plane, Coplanar Wave guide, Narrow band, Monopole antennas, WiMAX and WLAN.Abstract
A novel dual-band design of a finite ground coplanar waveguide (CPW)-fed monopole antenna is presented for simultaneously satisfying wireless local area network (WLAN) and worldwide interoperability for Microwave Access (WiMAX) applications. The proposed antenna, comprising a rectangular planar patch element embedded with L shape and T-shape slots in the middle of the patch element. The simulated -10 dB bandwidth for return loss is from 2.0 to 2.2 GHz and 2.8GHz to 3.1 GHz, covering some of the WiMAX and WLAN bands. Prototypes of the obtained optimized antenna have been designed and constructed. The Antenna has 22.5 % (-10 dB return loss) band width ranging from 2 to 2.2 GHz, and -21 dB return loss is from 2.85 to 2.95 GHz. The parametric study is performed to understand the characteristics of the proposed antenna. Also, good antenna performances such as radiation patterns and antenna gains over the operating bands have been observed and VSWR is 1.6 at 2.4 GHz.
