A simple recursive formula for calculating the S-parameters of finite periodic structures

Author

Ong, Cen Yen ; Okoniewski, Michal

Author_Institution

Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada

Volume

12

Issue

7

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

264

Lastpage

266

Abstract

A simple and efficient recursive formula to calculate the S-parameters of large, finite periodic structures is introduced. The technique utilizes measured or computed S matrices of structures with a small number of periods. The formula is verified on a simple rectangular waveguide with periodic gratings. Results from the formula are plotted against similar results obtained from finite-difference time-domain (FDTD) simulations, and they show excellent agreement. This formula can be used to compute the S-parameters of large microwave or optical periodic structures, which, by virtue of their finiteness may not be open to the application of periodic boundary conditions.

Keywords

S-parameters; diffraction gratings; finite difference time-domain analysis; periodic structures; rectangular waveguides; waveguide theory; S-parameters; finite periodic structures; finite-difference time-domain simulations; microwave periodic structures; periodic gratings; rectangular waveguide; recursive formula; Computational modeling; Finite difference methods; Gratings; Optical computing; Optical waveguides; Periodic structures; Rectangular waveguides; Scattering parameters; Time domain analysis; Transmission line matrix methods;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2002.801140

Filename

1016818