Title :
RCS analysis of reflector antennas by complex ray expansion
Author :
Ruan, Y.Z. ; Deng, S.H.
Author_Institution :
Dept. of Microwave Eng., Univ. of Electron. Sci. & Technol. of China, Sichuan, China
Abstract :
The incident plane wave is expanded into a set of Gaussian beams radiated by complex Huygens wavelets. For a two-dimensional concave reflector, the theoretical formulas of scattering field and radar cross section are obtained by means of complex ray tracing and paraxial approximation combined with the uniform theory of diffraction. The numerical results obtained for both horizontal and vertical polarizations agree well with those from geometrical optics.<>
Keywords :
antenna theory; approximation theory; electromagnetic field theory; electromagnetic wave diffraction; electromagnetic wave scattering; radar cross-sections; reflector antennas; 2D concave reflector; Gaussian beams; complex Huygens wavelets; complex ray expansion; complex ray tracing; horizontal polarisation; incident plane wave; paraxial approximation; radar cross section; reflector antennas; scattering field; two-dimensional concave reflector; uniform theory of diffraction; vertical polarisation; Cathode ray tubes; Engine cylinders; Microwave technology; Optical scattering; Physical theory of diffraction; Radar cross section; Radar scattering; Ray tracing; Reflector antennas; Structural beams;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115467
