Design of Finite Ground Coplanar Waveguide (FGCPW) fed Strip Monopole Antenna for WLAN Applications

摘要

A Finite Ground Coplanar Waveguide (FGCPW) fed Strip Monopole Antenna has been analyzed to produce narrow band response. The effect of ground plane dimensions and feed offset on the radiation characteristics has been studied in detail. The antenna exhibits linear polarization and nearly omni directional radiation characteristics with moderate gain and efficiency. The parametric analysis along with the experimental results predicted the finite ground coplanar waveguide-fed strip monopole antenna as an efficient radiator and can be used for modern wireless communication systems. In the proposed work, the antenna consists of a coplanar wave guide designed for 50Ω input impedance, fed with an SMA connector. The antenna is designed using FR-4 substrate (ε_r=4.4) for a resonant frequency 5.48 GHz. By adding additional L and T shape to the initial monopole the variation of in the resonant frequency is observed. Due to this effect, the antenna can produce a narrow band response.