Broad -Band Gap Coupled Microstrip Antenna

Abstract

A microstrip antenna with large bandwidth is developed using a parasitic technique. Compared to the available wide-band antenaas, the proposed antenna structure Is very compact and gives a less distorted radiation pattern with frequency . An impedance bandwidth, eight times that of a conventional patch antenna of the same size, Is achieved. The concept of coupled microstrip line model is extended for theoretical interpretation of the impedance Loci