This paper presents an optimization of the radiation and absorption characteristics of modified Yagi-Uda (YU) nanoantenna arrays. Four geometries of antennas are considered: conventional YU fed by voltage source and transmission line, and YU with a loop element fed by voltage source and transmission line. The numerical electromagnetic simulations of these nanoantennas were made by the method of moments (MoM). The optimization method used is the adaptive fuzzy GAPSO, which consists of hybridization between genetic algorithm (GA) and particle swarm optimization (PSO), with a fuzzy system employed to adapt the inertial weight
ω
and the acceleration coefficients C1 and C2 of PSO. The optimized results show that the modified YU nanoantennas present better characteristics of gain, directivity, and radiation efficiency than the conventional YU antenna.
In this work, we present a theoretical analysis of wireless optical nanolinks formed by plasmonic nanoantennas, where the antennas considered are Yagi-Uda and cylindrical nanodipoles made of Au. The numerical analysis is performed by the finite element method and linear method of moments, where the transmission power and the near electric field are investigated and optimized for three nanolinks: Yagi-Uda/Yagi-Uda, Yagi-Uda/dipole and dipole/dipole. The results show that all these case can operate with good transmission power at different frequencies by adjusting the impedance matching in the transmitting antennas and the load impedance of the receiving antennas.
Resumo-Neste trabalho estudamos a influência de quatro geometrias de nanoantenas Yagi-Uda em suas características de radiação. As quatro geometrias são formadas novos elementos, diferentes combinações dos elementos, diferentes espaçamentos e tamanhos dos mesmos. Método dos Momentos (MoM) para análise eletromagnética e para determinação da radiação da antena. Depois utilizamos o método de otimização chamado AGPSO adaptativo resultante da hibridização envolvendo o algoritmo genético(AG) e otimização por enxame de partículas (PSO) sistema fuzzy para adaptar o peso inercial ω e os coeficientes de aceleração C1 e C2, do PSO. Apresentamos radiação, diretividade e ganho.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.