Interaction Between Surface Waves on Wire Lines: Finite-Element and Analytic Models

A paper from the University of Cambridge investigates coupling between electromagnetic surface waves on parallel wires. Finite-element method (FEM)-based and analytic models are developed for single- and double-wire Sommerfeld and Goubau lines, validated via measurements and computational comparisons. The results exhibit new effects for surface wave propagation over multiple conductors, including findings on short-range behavior and optimum wire separation.

Use Cases

• Modeling electromagnetic coupling in parallel wire transmission lines based on the described FEM and analytic approaches.
• Analyzing short-range behavior and optimal separation for coupled surface waveguides based on the paper's findings.
• Validating computational models for Sommerfeld- and Goubau-type lines against experimental measurements as described.
• Investigating surface wave propagation effects for applications with high bandwidth demands mentioned in the description.

Strengths

• Models are validated via measurements for Goubau lines, showing remarkable agreement.
• A comparison between analytic and FEM-based computations for coupled lines is carried out, with models matching remarkably well.
• The paper presents significant findings on the short-range behavior and optimum separation of coupled wires.

Limitations

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Provenance

Source

University of Cambridge

Collection Method

Finite-element method (FEM)-based and analytic modeling, validated via measurements.