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Mode Matching Analysis of One-Dimensional Periodic Structures
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.
2018 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis, we analyze the electromagnetic wave propagation in waveguidestructuresexhibiting periodical geometry, including glide symmetry. The analysisis performed using a mode matching technique which correlates the different modecoefficients from separate but, connected regions in the structure. This technique isused to obtain the dispersion diagrams for two one-dimensional periodic structures:a glide-symmetric corrugated metasurface and a coaxial line loaded with periodicholes. The mode matching formulation is presented in Cartesian and cylindricalcoordinate system for the former and the later, respectively. The mode matchingresults are compared to simulated results obtained from the Eigenmode Solver inCST Microwave Studio and are found to agree very well.

Abstract [sv]

I detta examensarbete, analyseras elektromagnetisk v°agutbredning i periodiskav°agledarstrukturer som uppvisar glid symmetri. Analysen genomf¨ordes genom enmod matchnings-teknik som korrelerar de olika mod-koefficienterna fr°an separeraderegioner i strukturen med varandra. Denna teknik anv¨ands f¨or att ta framdispersionsrelationen f¨or tv°a endimensionella periodiska strukturer: en glid symmetriskkorrugerad meta-yta och en koaxial ledare belagd med periodiskt urgr¨opdah°aligheter. Mod matchnings-formuleringen presenteras i Kartesiska och cylindriskakoordinatsystem respektive f¨or de ovan n¨amnda fallen. Mod matchnings-resultatenj¨amf¨ors med data-simulerade resultat erh°allna fr°an CST Microwave Studio och de¨overenst¨ammer v¨al med varandra.

Place, publisher, year, edition, pages
2018. , p. 57
Series
TRITA-EECS-EX ; 2018:36
Keywords [en]
waveguide, wave propagation, electromagnetic fields, dispersion relation, mode matching, glide symmetry, periodic structures iii
Keywords [sv]
V°agledare, V°agutbredning, elektromagnetiska f¨alt, dispersionsrelation, mod matchning, glid symmetri, periodiska strukturer
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-231842OAI: oai:DiVA.org:kth-231842DiVA, id: diva2:1230327
Educational program
Master of Science - Electrophysics
Supervisors
Examiners
Available from: 2018-07-03 Created: 2018-07-03 Last updated: 2018-07-03Bibliographically approved

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