Radiation and Scattering Flat Conducting Plate of Resonant Size

The purpose of this research is to introduce and applied the conjugate gradient fast Fourier transform (CG-FFT) method, and particularly to situate it within the electrical field integral equation (EFIE) of applied computational electromagnetics (ACE). The conjugate gradient fast Fourier transform (CG - FFT) - based iterative approach for computing the fields scattered for different conducting plates (square and circular disk) in free space is used. The efficiency of the CG - FFT method is due to the fact that the integrals of the convolutions are computed by means of FFTs. This makes it possible to reduce the central processing unit (CPU) time and memory storage requirements by order of magnitude. This method is also capable of handling patches that are lossy and have arbitrary shape, it is useful for analyzing configurations that may not have been analyzed previously. The radar cross section(RCS) of different conducting plates (square and circular disk) are calculated using this scheme and compared with results that available in the literature