Abstract :
In this paper, we build on the method of implementing a robust numerical integration based on the method of steepest descents. To our knowledge, this is the first algorithm that works a double integral in a fashion that is asymptotically frequency-independent, or order-1, with some cases yielding error that actually decreases with frequency. We restrict our attention to TE scattering from a flat strip, which has dominant phases {kq} = (-k, kx, k), where kx is the component of the incident field tangential to the strip.
Keywords :
electromagnetic wave scattering; integration; TE scattering; double integral; flat facets; flat strip; order-one quadrature rules; robust numerical integration; steepest descents method; Acoustic scattering; Amplitude modulation; Electromagnetic scattering; Finite difference methods; Finite element methods; Frequency; Green function; Laboratories; Polynomials; Strips;
