Study on the Accuracy Improvement of the Second-Kind Fredholm Integral Equations by Using the Buffa-Christiansen Functions with MLFMA

Figure 4

The normalized RMS of RCS calculated by the RWG-MFIE, RWG-EFIE, NBC-MFIE, CRWG-MFIE, CRWG-EFIE, and NCBC-MFIE as a function of number of unknowns for a PEC sphere with radius of 1 m at 150 MHz.