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Wire-medium loaded planar structures: modal analysis, near fields, and radiation features

Published online by Cambridge University Press:  12 April 2016

Davide Comite ,
Paolo Baccarelli ,
Paolo Burghignoli  and
Alessandro Galli
Davide Comite*
Affiliation:
Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome – Via Eudossiana 18, 00184 Rome, Italy. Phone: +39 06 44585678
Paolo Baccarelli
Affiliation:
Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome – Via Eudossiana 18, 00184 Rome, Italy. Phone: +39 06 44585678
Paolo Burghignoli
Affiliation:
Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome – Via Eudossiana 18, 00184 Rome, Italy. Phone: +39 06 44585678
Alessandro Galli
Affiliation:
Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome – Via Eudossiana 18, 00184 Rome, Italy. Phone: +39 06 44585678
*
Corresponding author:D. Comite Email: [email protected]; comite/baccarelli/[email protected]
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Abstract

A novel transmission-line model is used for the analysis of planar structures, including wire-medium (WM) slabs with vertically aligned wires. The network formalism allows for an effective determination of the relevant spectral Green's functions, of the modal dispersion equation via transverse resonance, as well as of the far-field radiation pattern produced by simple sources via reciprocity, as opposed to the more cumbersome field-matching approach. Numerical results, validated also against state-of-the-art simulation software, confirm the accuracy and effectiveness of the proposed approach. In particular, modal and radiation features are presented for a class of leaky-wave antennas based on planar WM loaded configurations covered by partially reflecting screens, for which leaky unimodal regimes are achieved by minimizing spurious radiation from the quasi-transverse electromagnetic (TEM) mode.

Keywords

EM Field Theory and Numerical TechniquesMeta-materials and Photonic Bandgap StructuresPlanar Antenna Design
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Special Issue 4-5: EuMW 2015 Special Issue , June 2016 , pp. 713 - 722
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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