Title :
Effect of surface deposits on electromagnetic propagation in uniform ducts
Author :
Baumeister, Kenneth J.
Author_Institution :
NASA Lewis Res. Center, Cleveland, OH, USA
fDate :
9/1/1991 12:00:00 AM
Abstract :
A finite-element Galerkin formulation has been used to study the effect of material surface deposits on the reflective characteristics of straight uniform ducts with PEC (perfectly electric conducting) walls. Over a wide frequency range, the effects of both single and multiple dielectric surface deposits on the duct reflection coefficient were examined. The power reflector coefficient was found to be significantly increased by the addition of deposits on the wall.
Keywords :
electromagnetic wave reflection; finite element analysis; guided electromagnetic wave propagation; dielectric surface deposits; electromagnetic propagation; finite-element Galerkin formulation; frequency range; perfectly electric conducting walls; power reflector coefficient; reflection coefficient; reflective characteristics; uniform ducts; Boundary conditions; Conducting materials; Dielectric materials; Ducts; Electromagnetic propagation; Finite element methods; Frequency; Magnetic materials; Magnetic properties; Partial differential equations;
Journal_Title :
Magnetics, IEEE Transactions on
