Title :
Stationary phase method application for the analysis of radiation of complex 3-D conducting structures
Author :
Conde, Olga M. ; Pérez, Jesús ; Cátedra, Manuel Felipe
Author_Institution :
Dept. Tecnologia Electronica e ingenieria de Sistemas y Automatics, Cantabria Univ., Santander, Spain
fDate :
5/1/2001 12:00:00 AM
Abstract :
The stationary phase method is used to calculate the radiation pattern of antennas on complex structures. Physical optics (PO) approximation has been applied for the induced currents. The problem is stated directly over the parametric surfaces used to model the geometry and no translation of geometrical formats is required. The integral comes from the contribution of certain points on the surface (specular, boundary and vertices) where the phase term of the integrand presents a stationary behavior. In general, the asymptotic integration behaves similar to the numerical one but being more efficient in execution time than the latter
Keywords :
antenna radiation patterns; approximation theory; conducting bodies; electric current; electromagnetic induction; electromagnetic wave scattering; integral equations; physical optics; 3D conducting structures; PO approximation; antenna radiation pattern; asymptotic integration; geometrical formats; induced currents; integral; integrand; parametric surfaces; phase term; physical optics approximation; radiation analysis; stationary behavior; stationary phase method; Antenna radiation patterns; Electromagnetic scattering; Geometrical optics; Integral equations; Optical scattering; Physical optics; Physical theory of diffraction; Scanning probe microscopy; Solid modeling; Spline;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
