A coupled pendula system as an analogy to coupled transmissionlines
Chin Soon Teoh
Davis, L.E.
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol.;
This paper appears in: Education, IEEE Transactions on
Publication Date: Nov 1996
Volume: 39,
Issue: 4
On page(s): 548-557
ISSN: 0018-9359
References Cited: 10
CODEN: IEEDAB
INSPEC Accession Number: 5452724
Digital Object Identifier: 10.1109/13.544810
Current Version Published: 2002-08-06
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
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