Title :
Multimode Gaussian beam point-matching program for analysis of beam guides
Author :
Foltz, H.D. ; Davis, J.H.
Author_Institution :
Electr. Eng. Res. Lab., Texas Univ., Austin, TX, USA
Abstract :
A program for analysis of asymmetry and cross-polarization losses in reflector beam guides, based on Hermite-Gaussian beam expansions, is described. When executed on a supercomputer, the program is fast enough to be used for interactive design or optimization. The coefficients of the reflected modes are found from a least-squared error fit to the boundary conditions at a number of sample points. The results are compared with analytical solutions which are available in the case of a zeroth-order beam reflecting from an ellipsoidal mirror, and data are presented for reflectors with random surface deviations.<>
Keywords :
antenna reflectors; computer aided analysis; electromagnetic wave polarisation; telecommunications computing; Hermite-Gaussian beam expansions; analytical solutions; asymmetry; boundary conditions; coefficients; cross-polarization losses; ellipsoidal mirror; interactive design; least-squared error; multimode Gaussian beam; optimization; point-matching program; random surface deviations; reflected modes; reflector antennas; reflector beam guides; supercomputer; zeroth-order beam; Antennas and propagation; Boundary conditions; Design optimization; Diffraction; Equations; Laboratories; Mirrors; Reflector antennas; Supercomputers; Surface fitting;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175017
