Validation of HBF-Based MoM Approach to Solution of Radiation and Scattering Problems on Microwave Antennas With Linear Elements

A recently proposed method of moment (MoM)-based approach is extended to efficiently solve broadband radiation and scattering problems on wire and mixed geometries. This approach is based on expanding the total current on a conducting structure at any desired frequency in terms of entire domain hyper basis functions (HBFs), calculated at only one frequency. The developed approach is validated by comparing the characteristics of canonical microwave antennas with those obtained by direct MoM and characteristic mode analysis (CMA).