Navegando por Assunto "Antena de banda ultralarga"
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Item Acesso aberto (Open Access) Antena MIMO ultra banda larga para comunicações móveis(Universidade Federal do Pará, 2015-07-10) LAGES, André Vinicius de Souza; DMITRIEV, Victor Alexandrovich; http://lattes.cnpq.br/0684541646225359We propose an Ultra-Wideband MIMO Semi-Elliptical Antenna, that operates in all mobile bands between 0.7-6 GHz, and adapted to operate in Free Space (FS) and near human head. The antenna elements are identically and symmetric, which are fed by tapered microstrip line and possess a slanted concave semi elliptical patch to achieve a higher bandwidth using only one side of the substrate. A 45° slanted stub is also present yielding the low frequency resonance. Besides, the ground plane has rounded corners and a cutting-slot at the end of the microstrip line for matching purposes. A T-shaped decoupling was used to improve MIMO correlation. Numerical results shows good isolation and return loss. Multiplex efficiency is higher than - 3 dB in FS and better than - 8 dB near human head for almost all mobile standards within 0.7-6 GHz bandwidth. This antenna is a very attractive solution for Ultra-wideband MIMO applications.