RING BROADBAND PLANAR ANTENNA

Abstract

The properties of the antennas in the form of a flat circular or elliptical rings of varying width, made of good conductive material. The radii of the studied antennas not exceed a quarter of the wavelength adopted as the basis for calculations. By computer simulation calculated and analyzed on that basis the frequency dependence of the input impedance, the directivity, module of the reflection coefficient and VSWR. Noting the significant advantages of antennas considered in relation to the sample, which are as much a wider frequency band within which the input impedance and VSWR change slightly.