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Circularly polarized antenna optimization
Niederle, Vojtěch ; Poměnková, Jitka (oponent) ; Kadlec, Petr (vedoucí práce)
This thesis deals with optimization using Gaussian processes and differential evolution algorithm, and its implementation in MATLAB. The theoretical part discusses the topic of Gaussian processes in terms of mathematical representation, choice of kernel, parameters, mathematical procedures for implementation, differential evolution algorithm its mutation, crossover, and theory of circularly polarized antenna. The solution section describes the implementation in MATLAB and deals with the testing of this algorithm on benchmark functions. The results are then compared with other stochastic optimization algorithms and the effectiveness of the method is discussed for different types of problems. Based on the results, the method is extended by a Differential evolution algorithm, and circularly polarized antenna is optimized by this method. Designed antenna is fabricated and measured. The results are compared with simulations.
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