IWO-based synthesis of log-periodic dipole array

Zaharias D. Zaharis, Christos Skeberis, Thomas D. Xenos, Pavlos I. Lazaridis, Dimitrios I. Stratakis

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Citations (Scopus)


The Invasive Weed Optimization (IWO) is an effective evolutionary and recently developed method. Due to its better performance in comparison to other well-known optimization methods, IWO has been chosen to solve many complex non-linear problems in telecommunications and electromagnetics. In the present study, the IWO is applied to optimize the geometry of a realistic log-periodic dipole array (LPDA) that operates in the frequency range 800-3300 MHz and therefore is suitable for signal reception from several RF services. The optimization is applied under specific requirements, concerning the standing wave ratio, the forward gain, the gain flatness and the side lobe level, over a wide frequency range. The optimization variables are the lengths and the radii of the dipoles, the distances between them, and the characteristic impedance of the transmission line that connects the dipoles. The optimized LPDA seems to be superior compared to the antenna derived from the practical design procedure.

Original languageEnglish
Title of host publication2014 International Conference on Telecommunications and Multimedia, TEMU 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages5
ISBN (Electronic)9781479932009
Publication statusPublished - 7 Oct 2014
EventInternational Conference on Telecommunications and Multimedia - Heraklion, Greece
Duration: 28 Jul 201430 Jul 2014
https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6909332 (Link to Conference Details )


ConferenceInternational Conference on Telecommunications and Multimedia
Abbreviated titleTEMU 2014
Internet address


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