Design and Optimization of Compact Printed Log-Periodic Dipole Array Antennas with Extended Low-Frequency Response

Keyur K. Mistry, Pavlos I. Lazaridis, Zaharias D. Zaharis, Tian Hong Loh

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

This paper initially presents an overview of different miniaturization techniques used for size reduction of printed log-periodic dipole array (PLPDA) antennas, and then continues by presenting a design of a conventional PLPDA design that operates from 0.7–8 GHz and achieves a realized gain of around 5.5 dBi in most of its bandwidth. This antenna design is then used as a baseline model to implement a novel technique to extend the low-frequency response. This is completed by replacing the longest straight dipole with a triangular-shaped dipole and by optimizing the four longest dipoles of the antenna using the Trust Region Framework algorithm in CST. The improved antenna with extended low-frequency response operates from 0.4 GHz to 8 GHz with a slightly reduced gain at the lower frequencies.

Original languageEnglish
Article number2044
Number of pages20
JournalElectronics (Switzerland)
Volume10
Issue number17
Early online date24 Aug 2021
DOIs
Publication statusPublished - 1 Sep 2021

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