Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Analysis of reactive and resistive open waveguide filters for use in microwave‐heating applicators

Analysis of reactive and resistive open waveguide filters for use in microwave‐heating applicators Purpose – The purpose of this paper is to analyze the limitations of conventional reactive and resistive filters employed in the open ports of microwave‐heating applicators, in order to know the limits of these filters as a function of the permittivity of the inner materials. Design/methodology/approach – CST Studio Suite™ commercial electromagnetic software has been employed to simulate the behaviour of singly and doubly corrugated reactive filters. Additionally, several configurations for resistive filters implemented with water are assessed. Optimization procedures based on genetic algorithms have been used by modifying some geometric parameters of the filters in order to obtain the best possible bandstop response. Findings – Results show the serious limitations of these filters depending on the electric permittivity of the inner materials. Practical implications – These limitations restrict the type of the materials that can be processed, so there is a need for new structures which solve these problems. Originality/value – Although extensively used in many applications, there are few works that analyze the behaviour of these filters as a function of the geometric parameters or the sample permittivity, and therefore this influence needs to be studied. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering Emerald Publishing

Loading next page...
 
/lp/emerald-publishing/analysis-of-reactive-and-resistive-open-waveguide-filters-for-use-in-JBpBK0UfuD
Publisher
Emerald Publishing
Copyright
Copyright © 2011 Emerald Group Publishing Limited. All rights reserved.
ISSN
0332-1649
DOI
10.1108/03321641111152766
Publisher site
See Article on Publisher Site

Abstract

Purpose – The purpose of this paper is to analyze the limitations of conventional reactive and resistive filters employed in the open ports of microwave‐heating applicators, in order to know the limits of these filters as a function of the permittivity of the inner materials. Design/methodology/approach – CST Studio Suite™ commercial electromagnetic software has been employed to simulate the behaviour of singly and doubly corrugated reactive filters. Additionally, several configurations for resistive filters implemented with water are assessed. Optimization procedures based on genetic algorithms have been used by modifying some geometric parameters of the filters in order to obtain the best possible bandstop response. Findings – Results show the serious limitations of these filters depending on the electric permittivity of the inner materials. Practical implications – These limitations restrict the type of the materials that can be processed, so there is a need for new structures which solve these problems. Originality/value – Although extensively used in many applications, there are few works that analyze the behaviour of these filters as a function of the geometric parameters or the sample permittivity, and therefore this influence needs to be studied.

Journal

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic EngineeringEmerald Publishing

Published: Sep 13, 2011

Keywords: Bandstop filter; Industrial microwave oven; Waveguide; Optimization techniques; Microwaves

References