The backscattering from two identical circular loops

A study on the backscattering from two identical perfectly conducting thin circular loops illuminated by a plane electromagnetic wave with vertical polarization at normal incidence is presented. The theory is developed based on differential equations for the loop current rather than on an integral equation method. The induced current on the loops and the backscattering cross sections of the loops are determined, and comparisons are made between the calculated and measured values of the echo area. The experimental results are in good agreement with theory.