Shape Optimization of Wideband Antennas for Microwave Energy Harvesters Using FDTD


This paper presents parameter and topology optimizations of wideband antennas for microwave energy harvesters based on finite difference time-domain computations. The antenna shapes are optimized to reduce return losses in a specific frequency band using micro-genetic algorithm. The shape parameters of a two-arm planar spiral antenna are optimized. In addition, the topology optimization is performed using normalized Gaussian network, where spatial symmetries are assumed. It is shown that the return losses of the optimized antennas are <−10 dB from 1 to 2 GHz in which they have isotropic directivity.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
Publication ISSN: 1941-0069
Last Modified: 29 Jan 2024 08:21
Date Deposited: 08 Jul 2019 09:05
Full Text Link: https://eprints ... 621/1/70045.pdf
Related URLs: https://ieeexpl ... ocument/7093527 (Publisher URL)
PURE Output Type: Article
Published Date: 2015-03-01
Authors: Mori, Takuya
Murakami, Ryo
Sato, Yuki
Campelo, Felipe (ORCID Profile 0000-0001-8432-4325)
Igarashi, Hajime



Version: Published Version

Access Restriction: Restricted to Repository staff only

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