A Transmission Line Approach for Rough Conductor Surface Impedance Analysis

Publikationstyp
Journal Article
Date Issued
2023-02-01
Sprache
English
Author(s)
Tegowski, Bartosz  
Jaschke, Thomas  orcid-logo
Sieganschin, Anton  orcid-logo
Jacob, Arne  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/13796
Journal
IEEE transactions on microwave theory and techniques  
Volume
71
Issue
2
Start Page
471
End Page
479
Citation
IEEE Transactions on Microwave Theory and Techniques 71 (2): 471-479 (2023-02-01)
Publisher DOI
10.1109/TMTT.2022.3206440
Scopus ID
2-s2.0-85139470679
This work proposes a transmission line approach to determine the surface impedance of conductors with rough surfaces. Based on the gradient model, the roughness is represented by a gradual transition of the intrinsic impedance. Discretization and successive impedance transformations then directly yield the surface impedance. Evaluating the fields is not necessary to this end, but still feasible if required. Investigations of the proposed model confirm the field diffusion to be fully characterized by a single dimensionless ratio, which enables a comprehensive analysis of the surface impedance regarding its dependency on frequency, conductivity, and roughness.
Subjects
Conductivity
Conductors
Effective conductivity
effective permeability
gradient model
Impedance
Power transmission lines
rough conductor modeling
Rough surfaces
skin effect
Surface impedance
surface impedance
surface roughness
Surface roughness
transmission line theory