Surface-wave propagation on a grounded dielectric slab covered by a high-permittivity material

Article


Ball, James A. R. and Horsfield, Brendan. 2000. "Surface-wave propagation on a grounded dielectric slab covered by a high-permittivity material." IEEE Microwave and Guided Wave Letters. 10 (5), pp. 171-173. https://doi.org/10.1109/75.850367
Article Title

Surface-wave propagation on a grounded dielectric slab covered by a high-permittivity material

Article CategoryArticle
AuthorsBall, James A. R. (Author) and Horsfield, Brendan (Author)
Journal TitleIEEE Microwave and Guided Wave Letters
Journal Citation10 (5), pp. 171-173
Number of Pages3
Year2000
Place of PublicationPiscataway, NJ. United States
Digital Object Identifier (DOI)https://doi.org/10.1109/75.850367
Web Address (URL)http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=850367
Abstract

A grounded dielectric slab covered by a higher permittivity material would not normally be expected to support surface waves. This conclusion must be modified when the covering material is sufficiently lossy. Assuming a thin slab, approximate analysis shows that the fundamental TM0 surface wave is able to propagate if the cover loss is high enough. A numerical analysis has verified these conclusions. propagation of higher order TM and TE modes is found to be possible above cutoff frequencies, which reduce as cover loss is increased. These results are of significance when printed circuit transmission lines such as microstrip or slotline are used as contact sensors, e.g., for moist materials.

Keywordsdielectric losses; dielectric measurements; electromagnetic surface waves; microstrip; microwave propagation; moisture measurments; moisture transducers; slotline
ANZSRC Field of Research 2020490302. Numerical analysis
400999. Electronics, sensors and digital hardware not elsewhere classified
400801. Circuits and systems
Public Notes

© 2000 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Byline AffiliationsDepartment of Electrical, Electronic and Computer Engineering
Faculty of Engineering and Surveying
Institution of OriginUniversity of Southern Queensland
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