Design of Ultra Wideband Square Aperture Shaped Microstrip (ASM) Antenna

Abstract

Abstract

A compact coplanar waveguide-fed (CPW) microstrip antenna for ultra-wideband (UWB) wireless communication is presented. The antenna comprises a square aperture (24 mm × 24 mm) etched on the ground-plane of a printed circuit board and a modified rectangular shaped stub, also total size of the antenna is 30 mm × 30 mm. The lower edge of the band is attained by properly decoupling the resonant frequencies due to proper selection of dimension of rectangular stub of the antenna. The upper edge of the radiating band is enhanced by cutting slots in rectangular stub.  Execution results show that the designed antenna operates in the 2.8 to 13.7 GHz band with S11 ≤ -10 dB. The antenna exhibits broadband impedance matching with stable and omnidirectional radiation pattern over the entire operating band.

Keywords: Coplanar waveguide, microstrip antennas, ultra-wideband antennas