Generation of Plane Waves in the Nearfield Region in a Restricted Environment

A wideband dual-polarized plane wave generator (PWG) based on an adaptive least squares (LS) for plane wave synthesis in a restricted environment is presented. Here we achieve plane wave synthesis at short distances with precisionlimited weighting coefficients by applying an iteration limiting method to LS. The PWG performance is validated via numerical simulation. The results show that an adaptive LS provides weighting coefficients for synthesizing a stable plane wave even in a restricted environment compared to the general LS. This indicates that the proposed method is applicable to various PWG systems and realistic environments.