Title: Finding resonant frequencies of microwave cavities through a modified harmony search algorithm

Authors: Ivan Amaya; Rodrigo Correa

Addresses: School of Electrical, Electronic and Telecommunication Engineering, Universidad Industrial de Santander, Bucaramanga, Santander, Colombia ' School of Electrical, Electronic and Telecommunication Engineering, Universidad Industrial de Santander, Bucaramanga, Santander, Colombia

Abstract: This article describes the computation of the resonant frequencies of a cylindrical applicator through circuital analysis theory, using the unified particle swarm optimisation (UPSO) algorithm and a new variant of the harmony search (HS) algorithm, called self-adjustable bandwidth harmony search (SBHS) algorithm. It was found that SBHS yields more accurate results, but took somewhat longer. Even so, both approaches provided similar results when considering the penalty factor. We also found that as more solutions appear in the frequency range, it seems easier for SBHS to identify them, thus requiring less iterations and computation time. Results showed that this type of models can be solved efficiently using SBHS.

Keywords: bio-inspired computation; resonant frequencies; microwaves; microwave cavities; cylindrical applicators; modified harmony search; circuit analysis; self-adjustable bandwidth HS; adjustable bandwidth HS; internal penalisation; global optimisation; unified PSO; particle swarm optimisation; UPSO.

DOI: 10.1504/IJBIC.2015.072258

International Journal of Bio-Inspired Computation, 2015 Vol.7 No.5, pp.285 - 295

Received: 23 Apr 2014
Accepted: 22 Sep 2014
Published online: 07 Oct 2015 *

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