Simulation-driven optimization of a compact Fabry-Perot cavity antenna

Optimization of a Fabry-Perot cavity antenna by particle swarm optimization algorithm is presented. The objective of this work was to find the optimal transverse permittivity variation in a planar superstrate providing the maximum directivity bandwidth product. Additionally, a method to reduce the total optimization time is presented. The key antenna parameters of a near-optimal solution, such as peak directivity, 3-dB directivity bandwidth and directivity bandwidth product, are given.