Investigation of aperture depth on the radiation performance of leaky-wave structures

Adam Beacom; Krushna Kanth Varikuntla; Muhammad Ali Babar Abbasi; Okan Yurduseven

doi:10.1109/iWAT66946.2026.11501844

Investigation of aperture depth on the radiation performance of leaky-wave structures

School of Electronics, Electrical Engineering and Computer Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

This paper presents an ongoing experimental investigation into the influence of aperture depth on the radiation characteristics of leaky coaxial cables (LCX), a class of leaky-wave structures. A series of LCX prototypes with varying aperture depths were fabricated and characterized through comprehensive measurements in an anechoic environment. Scattering parameters and radiation patterns were obtained to evaluate beam directionality and frequency-dependent radiation behaviour. The measured results reveal a distinct frequency scanning range of approximately 35°, quantifying the leaky-wave nature of the structures. The findings highlight the decisive role of aperture depth in the prediction of radiation efficiency, leakage rate, and beam-steering performance. The experimental analysis provides practical insights for the use of LCX in low-profile radar systems, signal interception, and distributed or pinching antenna arrays.

Original language	English
Title of host publication	2026 IEEE International Workshop on Antenna Technology (iWAT): Proceedings
Publisher	IEEE
Number of pages	4
ISBN (Electronic)	9798331573034
ISBN (Print)	9798331573041
DOIs	https://doi.org/10.1109/iWAT66946.2026.11501844
Publication status	Published - 06 May 2026
Event	2026 IEEE International Workshop on Antenna Technology: iWAT 2026 - Liverpool, United Kingdom Duration: 25 Mar 2026 → 27 Mar 2026 https://attend.ieee.org/iwat-2026/

Publication series

Name	IEEE International Workshop on Antenna Technology (iWAT): Proceedings
ISSN (Print)	2770-4262
ISSN (Electronic)	2770-4254

Conference

Conference	2026 IEEE International Workshop on Antenna Technology
Country/Territory	United Kingdom
City	Liverpool
Period	25/03/2026 → 27/03/2026
Internet address	https://attend.ieee.org/iwat-2026/

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Investigation of aperture depth on the radiation performance of leaky wave structures
Copyright 2026 the authors. This is an accepted manuscript distributed under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Accepted author manuscript, 1.44 MBLicence: CC BY

Cite this

@inproceedings{1b87aa92335046c5b8877b1c6bda1120,

title = "Investigation of aperture depth on the radiation performance of leaky-wave structures",

abstract = "This paper presents an ongoing experimental investigation into the influence of aperture depth on the radiation characteristics of leaky coaxial cables (LCX), a class of leaky-wave structures. A series of LCX prototypes with varying aperture depths were fabricated and characterized through comprehensive measurements in an anechoic environment. Scattering parameters and radiation patterns were obtained to evaluate beam directionality and frequency-dependent radiation behaviour. The measured results reveal a distinct frequency scanning range of approximately 35°, quantifying the leaky-wave nature of the structures. The findings highlight the decisive role of aperture depth in the prediction of radiation efficiency, leakage rate, and beam-steering performance. The experimental analysis provides practical insights for the use of LCX in low-profile radar systems, signal interception, and distributed or pinching antenna arrays.",

author = "Adam Beacom and Varikuntla, \{Krushna Kanth\} and Abbasi, \{Muhammad Ali Babar\} and Okan Yurduseven",

year = "2026",

month = may,

day = "6",

doi = "10.1109/iWAT66946.2026.11501844",

language = "English",

isbn = "9798331573041",

series = "IEEE International Workshop on Antenna Technology (iWAT): Proceedings",

publisher = "IEEE",

booktitle = "2026 IEEE International Workshop on Antenna Technology (iWAT): Proceedings",

note = "2026 IEEE International Workshop on Antenna Technology : iWAT 2026 ; Conference date: 25-03-2026 Through 27-03-2026",

url = "https://attend.ieee.org/iwat-2026/",

}

Beacom, A , Varikuntla, KK , Abbasi, MAB & Yurduseven, O 2026, Investigation of aperture depth on the radiation performance of leaky-wave structures. in 2026 IEEE International Workshop on Antenna Technology (iWAT): Proceedings. IEEE International Workshop on Antenna Technology (iWAT): Proceedings, IEEE, 2026 IEEE International Workshop on Antenna Technology, Liverpool, United Kingdom, 25/03/2026. https://doi.org/10.1109/iWAT66946.2026.11501844

Investigation of aperture depth on the radiation performance of leaky-wave structures. / Beacom, Adam ; Varikuntla, Krushna Kanth ; Abbasi, Muhammad Ali Babar et al.
2026 IEEE International Workshop on Antenna Technology (iWAT): Proceedings. IEEE, 2026. (IEEE International Workshop on Antenna Technology (iWAT): Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Investigation of aperture depth on the radiation performance of leaky-wave structures

AU - Beacom, Adam

AU - Varikuntla, Krushna Kanth

AU - Abbasi, Muhammad Ali Babar

AU - Yurduseven, Okan

PY - 2026/5/6

Y1 - 2026/5/6

N2 - This paper presents an ongoing experimental investigation into the influence of aperture depth on the radiation characteristics of leaky coaxial cables (LCX), a class of leaky-wave structures. A series of LCX prototypes with varying aperture depths were fabricated and characterized through comprehensive measurements in an anechoic environment. Scattering parameters and radiation patterns were obtained to evaluate beam directionality and frequency-dependent radiation behaviour. The measured results reveal a distinct frequency scanning range of approximately 35°, quantifying the leaky-wave nature of the structures. The findings highlight the decisive role of aperture depth in the prediction of radiation efficiency, leakage rate, and beam-steering performance. The experimental analysis provides practical insights for the use of LCX in low-profile radar systems, signal interception, and distributed or pinching antenna arrays.

AB - This paper presents an ongoing experimental investigation into the influence of aperture depth on the radiation characteristics of leaky coaxial cables (LCX), a class of leaky-wave structures. A series of LCX prototypes with varying aperture depths were fabricated and characterized through comprehensive measurements in an anechoic environment. Scattering parameters and radiation patterns were obtained to evaluate beam directionality and frequency-dependent radiation behaviour. The measured results reveal a distinct frequency scanning range of approximately 35°, quantifying the leaky-wave nature of the structures. The findings highlight the decisive role of aperture depth in the prediction of radiation efficiency, leakage rate, and beam-steering performance. The experimental analysis provides practical insights for the use of LCX in low-profile radar systems, signal interception, and distributed or pinching antenna arrays.

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DO - 10.1109/iWAT66946.2026.11501844

M3 - Conference contribution

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SN - 9798331573041

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PB - IEEE

T2 - 2026 IEEE International Workshop on Antenna Technology

Y2 - 25 March 2026 through 27 March 2026

ER -

Investigation of aperture depth on the radiation performance of leaky-wave structures

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