Title
Pulsed Operation of a Weakly-Dispersive, Leaky-Wave Antenna: A Causal Numerical Study
Author
Gu, Junhong (Student TU Delft)
Stumpf, Martin (Brno University of Technology; Luleå University of Technology)
Neto, A. (TU Delft Tera-Hertz Sensing) 
Lager, I.E. (TU Delft Electrical Engineering Education)
Date
2024
Abstract
A strictly causal numerical study of the pulsed operation of a weakly dispersive, leaky wave (LW) antenna is presented. The intricacies at the forefront of the electromagnetic (EM) field radiated from a gap-fed slot in a perfectly electrically conducting (PEC) sheet are evidenced for the first time. The radical effect of a free-space gap separating the PEC sheet from the dielectric half-space into which the slot radiates is demonstrated, thus providing time-domain (TD) arguments for the effectiveness of this essential element of leaky-lens antennas (LLAs). The response of the gapped structure to an excitation consisting of pulse trains is evaluated. The discussed results pave the way toward building a genuine TD counterpart of the LW radiation from gap-fed slots. Furthermore, they are conditional to understanding the transients occurring in between intervals when a steady-state, time-harmonic (TH) operation can be assumed, an extremely relevant ingredient to implementing highly complex modulations in carrier-based, wireless transfer.
Subject
Leaky wave antennas
numerical analysis
time-domain analysis
To reference this document use:
http://resolver.tudelft.nl/uuid:98d99bc8-8a4b-4299-a103-0f455bd47c66
DOI
https://doi.org/10.1109/TAP.2023.3338006
Embargo date
2024-07-31
ISSN
0018-926X
Source
IEEE Transactions on Antennas and Propagation, 72 (1), 720-732
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
© 2024 Junhong Gu, Martin Stumpf, A. Neto, I.E. Lager