Efficient Iterative Analysis Technique of Complex Radome Antennas Based on the Characteristic Basis Function Method

Abstract

We present a new approach for the analysis and design of radome structures. It makes use of extended domain macro-basis functions obtained from the characteristic basis function method in order to represent the current distribution over the radome. This involves computational advantages due to the reduction in the number of unknowns compared to conventional approaches. This approach involves dividing the scenario into two domains, antenna and radome, and calculating the influence between them using a technique that iteratively corrects the error of the currents on each domain. This technique can be used to analyze arbitrary-shaped radome antennas including several material layers with different thicknesses and dielectric properties that can embed frequency selective surfaces on any interface. Several test cases are presented for the validation of the proposed technique.