Full-wave analysis of quasi-optical structures

Author

Nuteson, Todd W. ; Monahan, Gregory P. ; Steer, Michael B. ; Naishadham, Krishna ; Mink, James W. ; Kojucharow, Konstantin K. ; Harvey, James

Author_Institution

Dept. of Electr. & Comput. Eng., North Carolina State Univ., Raleigh, NC, USA

Volume

44

Issue

5

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

701

Lastpage

710

Abstract

A full-wave moment method implementation, using a combination of spatial and spectral domains, is developed for the analysis of quasi-optical systems. An electric field dyadic Green´s function, including resonant and nonresonant terms corresponding to coupling from modal and nonmodal fields, is employed in a Galerkin routine. The dyadic Green´s function is derived by separately considering paraxial and nonparaxial fields and is much easier to develop than a mixed, scalar and vector, potential Green´s function. The driving point impedance of several antenna elements in a quasi-optical open cavity resonator and a 3×3 grid in free space are computed and compared with measurements

Keywords

Galerkin method; Green´s function methods; antenna theory; cavity resonators; method of moments; Galerkin method; antenna elements; driving point impedance; dyadic Green function; full-wave analysis; moment method; nonparaxial fields; open cavity resonator; paraxial fields; quasi-optical structures; spatial domain; spectral domain; Antenna measurements; Cavity resonators; Extraterrestrial measurements; Grid computing; Impedance; Laser cavity resonators; Moment methods; Mutual coupling; Power system modeling; Resonance;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.493923

Filename

493923