Now showing items 1-10 of 175
New contributions to the determination of resonance frequencies of rectangular microstrip antennas by neural networks
This paper uses artificial neural networks (ANN) to compute the resonance frequencies of rectangular microstrip antennas (MSA), used in mobile communications. Perceptron Multi-layers (PML) networks were used, with the ...
Determination of resonant frequencies of triangular and rectangular microstrip antennas, using artificial neural networks
This paper presents models that can be used in the design of microstrip antennas for mobile communications. The antennas can be triangular or rectangular. The presented models are compared with deterministic and empirical ...
Weight vector estimation of circular arrays of antennas using Artificial Neural Networks
This paper presents a model for the control of the radiation pattern of a circular array of antennas, shaping it to address the radiation beam in the direction of the user, in order to reduce the transmitted power and to ...
Space mapping optimization of handset antennas considering EM effects of mobile phone components and human body
(International Journal of RF and Microwave Computer-Aided Engineering, 2016-02)
Antenas planares multicamadas com materiais supercondutores e fotônico para comunicações móveis
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2006-08-04)
Recently, planar antennas have been studied due to their characteristics as well as the advantages that they offers when compared with another types of antennas. In the mobile communications area, the need for this kind ...
Performance analysis and evaluation for active antenna arrays under three-dimensional wireless channel model
(Ieee-Inst Electrical Electronics Engineers Inc, 2018)
In this paper, we establish a full 3-D channel model to support the performance analysis and evaluation of active antenna array (AAA)-based wireless communication systems. We analyze and compare the impact of three different ...
Inter-Cell Interference in Noncooperative TDD Large Scale Antenna Systems
(Ieee-inst Electrical Electronics Engineers IncPiscatawayEUA, 2013)