Time-Domain Electromagnetic Leaky Waves

Title

Time-Domain Electromagnetic Leaky Waves

 Author

Stumpf, M. (Brno University of Technology)
Gu, Junhong (Student TU Delft)
Lager, I.E. (TU Delft Electrical Engineering Education) ORCID 0000-0002-9138-637X

 Date

2023

 Abstract

A causality preserving interpretation of the electromagnetic (EM) leaky-wave (LW) propagation in space and time is proposed for the first time. The Cagniard-deHoop (CdH) joint transform technique is applied for elucidating the relation between time-domain (TD) head waves (HWs), body waves (BWs), Cherenkov wave effects, and LWs. It is conjectured that the LW phenomenon in the TD is associated with a local maximum in the observed signal that occurs between the arrivals of the HW and BW constituents. A quantitative analysis that enables the space-time localization of the LW effect is performed theoretically and, then, illustrated via representative examples including the pulsed EM radiation from both a line source above a dielectric half-space, and narrow-slot antennas.


 Subject

leaky wave (LW)
head waves (HW)
body wave (BW)
Cherenkov radiation
time-domain (TD) analysis
Cagniard-deHoop (CdH) technique

 To reference this document use:

http://resolver.tudelft.nl/uuid:49f2a623-50fc-467f-8ec7-103f0ed94e88

 DOI

https://doi.org/10.1109/TAP.2023.3249358

 Embargo date

2023-09-04

 ISSN

0018-926X

 Source

IEEE Transactions on Antennas and Propagation, 71 (4), 3382-3392

 Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2023 M. Stumpf, Junhong Gu, I.E. Lager
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