Electromagnetic Scattering by Open-Ended Cavities: An Analysis Using Precorrected-FFT Approach
Name
HPCES009.pdf
Size
156.49 KB
Format
Adobe PDF
Checksum (MD5)
c9a174261cc4f64d2075213e0cd10b36
Author(s)
Nie, Xiaochun
Li, Le-Wei
Date Issued
January 2002
Series/Report no.
High Performance Computation for Engineered Systems (HPCES);
Abstract
In this paper, the precorrected-FFT method is used to solve the electromagnetic scattering from two-dimensional cavities of arbitrary shape. The integral equation is discretized by the method of moments and the resultant matrix equation is solved iteratively by the generalized conjugate residual method. Instead of directly computing the matrix-vector multiplication, which requires N² operations, this approach reduces the computation complexity to O(N log N) as well as avoids the storage of large matrices. At the same time, a technique known as the complexifying k is applied to accelerate the convergence of the iterative method in solving this resonance problem. Some examples are considered and excellent agreements of radar cross sections between these computed using the present method and those from the direct solution are observed, demonstrating the feasibility and efficiency of the present method.
Subjects
precorrected-FFT method
method-of-moments
electrical-field integral equation
electromagnetic scattering
cavity
Persistent DSpace Link
