TY - JOUR
T1 - Shape Optimization of Wideband Antennas for Microwave Energy Harvesters Using FDTD
AU - Mori, Takuya
AU - Murakami, Ryo
AU - Sato, Yuki
AU - Campelo, Felipe
AU - Igarashi, Hajime
PY - 2015/3/1
Y1 - 2015/3/1
N2 - 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.
AB - 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.
UR - https://ieeexplore.ieee.org/document/7093527
U2 - 10.1109/tmag.2014.2359677
DO - 10.1109/tmag.2014.2359677
M3 - Article
SN - 0018-9464
VL - 51
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 3
M1 - 8000804
ER -