Analysis of Antenna Arrays Configurations with Random Parameters
Wamberto J. L. Queiroz, Marcelo S. Alencar, Fabricio G. S. Silva
Evento: 2002 International Telecommunications Symposium (ITS2002)
Keywords: Array antennas random coefficients random spacing array factor
Abstract"This paper presents a performance analysis of two linear arrays structures considering the effect of excitation coefficients and random separation between elements. The results obtained show that these configurations can produce good radiation patterns in terms of side lobes level and directivity. Depending on the chosen parameters the irradiation pattern can be optimized as compared to the one obtained using binomial coefficients and as good as the patterns obtained using Dolph-Tschebyscheff. This method can be used in order to get a smoother irradiation pattern and can be useful to control de irradiation pattern in response to user mobility. Another advantage is related to the numerical processing involved in the computation of excitation coefficients. They are chosen randomly from a convenient set, while in other cases they are computed in real time and depend on antenna dimensions, a task which can be computer intensive."