Bandwidth Enhancement of Microstrip Antenna with Corner Truncation for UWB Application Using Cavity Model Analysis

Abstract

Bandwidth improvement of microstrip antenna with corner truncation and equivalent circuit approximate
using cavity model analysis for UWB application is presented. Pair of corner truncation and an U- slot
are incorporated in the rectangular radiating element for bandwidth improvement. The truncated corners
and slot dimensions are the major factors of impedance bandwidth. The proposed antenna covers
impedance bandwidth of 105.5% from 3.4 GHz to 11 GHz with maximum gain 5.9 dBi and efficiency
97.90%. The proposed antenna is compared with the microstrip patch antenna (without U-slot truncated
corner) and other parameters are also studied. The theoretical, simulated and experimental results are
compared with well agreement.