WKB METHOD FOR ANALYZING THE ELECTROMAGNETIC-FIELD IN A CIRCULAR WAVE-GUIDE WITH LINEARLY MOVING BOUNDARY

Authors
GAFFOUR L
Citation
L. Gaffour, WKB METHOD FOR ANALYZING THE ELECTROMAGNETIC-FIELD IN A CIRCULAR WAVE-GUIDE WITH LINEARLY MOVING BOUNDARY, Journal of electromagnetic waves and applications, 10(6), 1996, pp. 757-764
Citations number
4
Categorie Soggetti
Physycs, Mathematical","Physics, Applied","Engineering, Eletrical & Electronic
Journal title
Journal of electromagnetic waves and applications → ACNP
ISSN journal
09205071
Volume
10
Issue
6
Year of publication
1996
Pages
757 - 764
Database
ISI
SICI code
0920-5071(1996)10:6<757:WMFATE>2.0.ZU;2-P
Abstract
The analytical study of the electromagnetic field in a circular wavegu ide with linearly moving boundary has been made in [1]. In this paper, we analyse the case where the argument of the LEGENDRE's associate fu nctions is superior to 1. The W.K.B. method is used for solving this p roblem. The expressions of field have been determined. It is shown tha t the field has a modal nature and the modes are dynamics, each having an instantaneous frequency. Also a criterium of precision is given.