Conductive cylindrical surface waveguides

Cylindrical surface waveguides are extremely useful for transporting a surface wave in one dimension with low attenuation when the medium surrounding the surface waveguide has low attenuation. Additionally, surface waveguides guide a pure low-order mode with no cutoff frequency and low distortion, while higher-order modes are quickly attenuated. In this work, we develop simulations and conduct experiments to design a large-radius surface waveguide which can be measured with existing lab equipment. Additionally, we develop and examine the effects of small, simply-shaped couplers, which are highly inefficient at launching surface waves. We also measure the effects of bends on a large-radius surface waveguide (approximately 24% of a wavelength). We study the propagation of the surface wave with a surrounding medium of air and of sand, which is a lossy medium.

Name thesis:degree_name

M.S.

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Electrical & Computer Engr

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2012

Author dc:creator

• Erickson, Katherine

Contributors dc:contributor

• Bernhard, Jennifer T.

• surface waveguide
• transmission line
• surface waves
• waveguide theory

Statement dc:rights

• Copyright 2012 Katherine Erickson

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/30914

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/30914