Mistry, K K; Lazaridis, P I; Zaharis, Z D; Loh, T H (2021) Design and Optimization of Compact Printed Log-Periodic Dipole Array Antennas with Extended Low-Frequency Response. Electronics, 10 (17). 2044

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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.

Item Type:	Article
Keywords:	CST simulations; printed log-periodic dipole array antennas; UWB antennas
Subjects:	Electromagnetics > Wireless Communications
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.3390/electronics10172044
Last Modified:	15 Feb 2023 15:28
URI:	https://eprintspublications.npl.co.uk/id/eprint/9652