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

fYear

1991

fDate

24-28 June 1991

Firstpage

1015

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.175017

Filename

175017