A coupled pendula system as an analogy to coupled transmission lines

Author

Teoh, Chin Soon ; Davis, Lionel E.

Author_Institution

Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK

Volume

39

Issue

4

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

548

Lastpage

557

Abstract

The aim of this paper is to present a practical and easy to analyze coupled pendula system in order to demonstrate, by analogy, the behavior of coupled transmission lines and related devices. The importance of the coupled mode theory is first explained and its derivation is worked out through the use of the spring-coupled pendula, followed by a statement of the theory and its restrictions. The theory is then used for coupled transmission lines in general and a comparison is made between the coupled pendula and coupled transmission lines in order to extract analogous quantities and to recognize the limitations of such an analogy. The coupled pendula are then used to demonstrate the behavior of a forward coupler, tunable filter, optical switch, and parametric amplifier

Keywords

circuit tuning; filters; microstrip couplers; optical switches; parametric amplifiers; pendulums; transmission line theory; analogous quantities; coupled mode theory; coupled pendula system; coupled transmission lines; forward coupler; microstrip forward coupler; optical switch; parametric amplifier; spring-coupled pendula; tunable filter; Optical amplifiers; Optical coupling; Optical filters; Optical switches; Physics computing; Power transmission lines; Semiconductor optical amplifiers; Springs; Transmission line theory; Transmission lines;

fLanguage

English

Journal_Title

Education, IEEE Transactions on

Publisher

ieee

ISSN

0018-9359

Type

jour

DOI

10.1109/13.544810

Filename

544810