The objective of this work is the bandwidth optimization of linear and planar
antennas for broadband system applications. For achieving this goal, it was made a study of
the analysis, bandwidth enlargement and optimization techniques appropriated for the
problem in question. As analysis technique, the method of moments was utilized, which is
presented in chapter II. For bandwidth enlargement, the techniques of collocation of
parasitic elements and building slots in the radiator were employed, briefly described in
chapter III. As optimization algorithm, the genetic algorithm was utilized, briefly described
in chapter II. In this work, two antenna proposals are presented, a linear dipole antenna
combined with four parasitic elements, chapter IV, and a planar antenna of loop type,
chapter V. In the first case, it was utilized parasitic elements and the genetic algorithm to
enlarge the bandwidth, and in the second, it was employed slots in the radiator and the
parametric optimization to this objective.
|
