Solving 4,000 Wavelengths 2-D TM Scatterer Using Entire-Domain High-Precision MoM

We present results for entire-domain analysis, based on method of moments, of 2D strips with cross-section length of 4,000 wavelengths. The strips are made of perfect electric conductor and are considered to be infinitely thin. The encountered singular integrals are calculated using a singularity cancellation scheme that ensures high precision results. Due to the high precision of integration and the usage of Legendre polynomials (basis functions) with the maximal order of 14,000, the strip with the cross-section length of 4,000 wavelengths is solved. The surface current density, obtained from the proposed approach, is compared to the current approximation obtained from commercial software. The results show that if high-precision integration is provided in conjunction with Legendre basis functions then a strip of the cross-section length up to 4,000 wavelengths can be analyzed as a single mesh element.