The Design and Optimization of Planar LPDAs

Abstract

A signiflcant space reduction of a Planar Log-Periodic Dipole Array (LPDA) is achieved in this work. This reduction was performed by utilizing the flrst order iteration meander shape dipole in the design of a planar LPDA. The minimization procedure is illustrated in this work by presenting two designs for a Euclidean LPDA with linear dipoles and a meander LPDA operating over the entire S frequency band. Both designs are compared through the main common characteristics of an antenna: return loss response, radiation pattern and the maximum gain. The agreement between the results of both designs was very good and the properties of the meander LPDA were identical to those of the Euclidean LPDA.