Table of Contents
ISRN Communications and Networking
Volume 2012 (2012), Article ID 369293, 8 pages
http://dx.doi.org/10.5402/2012/369293
Research Article

Antenna Optimization Using Multiobjective Algorithms

1Electromagnetic Devices Laboratory, SENAI-Integrated Centre of Manufacture and Technology, 41650-050 Salvador, BA, Brazil
2ENACOM-Handcrafted Technologies, 31310-260 Belo Horizonte, MG, Brazil

Received 29 October 2011; Accepted 5 December 2011

Academic Editors: I.-S. Koh and B.-H. Soong

Copyright © 2012 X. L. Travassos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents several applications of multiobjective optimization to antenna design, emphasizing the main general steps in this process. Specifications of antennas usually involve many conflicting objectives related to directivity, impedance matching, cross-polarization, and frequency range. These requirements induce multiobjective problems, which are formulated, solved, and analyzed here for three distinct antenna designs: a bowtie antenna for ground-penetrating radars, a reflector antenna for satellite broadcast systems, and a meander-line antenna for radio-frequency identification tags. Both stochastic and deterministic methods are considered in the analysis.