A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation

Goksel Turan; Gokhan  Cinar; Hayrettin  Odabasi; Ihsan Kanbaz; Okan Yurduseven

A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation

Goksel Turan
, Gokhan Cinar
, Hayrettin Odabasi
, Ihsan Kanbaz
, Okan Yurduseven

School of Electronics, Electrical Engineering and Computer Science

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

Abstract

Conventional leaky-wave antennas (LWAs) typicallyscan their beams through the broadside direction, while designscapable of side-fire beam-scanning are significantly less common. This paper presents a wideband horizontal beam-scanningLWA with stable radiation characteristics, based on a halfmode corrugated substrate integrated waveguide (HMCSIW).The antenna’s leaky-wave radiation response is realized byadding square rings to the ground plane of the HMCSIW.Furthermore, the incorporation of circular rings on the antenna’sfront surface enhances the stability of the side-fire beam-scanningperformance. The proposed antenna achieves horizontal beamscanning over a frequency range of 13 to 22.5 GHz, correspondingto a 53.5% bandwidth. It exhibits a peak gain of 12.7 dBi witha maximum variation of 2.1 dBi, a beam-scanning range from -35° to 35°, and an average efficiency of approximately 90%. Theproposed antenna can be an intriguing choice for microwaveimaging applications, spectrum analysers, and next-generationradar systems.

Original language	English
Title of host publication	20th European Conference on Antennas and Propagation 2026: Proceedings
Publisher	IEEE
Number of pages	4
ISBN (Print)	978-1-6654-7541-9
Publication status	Accepted - 12 Dec 2025
Event	20th European Conference on Antennas and Propagation 2026 - Dublin, Ireland, Dublin, Ireland Duration: 19 Apr 2026 → 24 Apr 2026 https://www.eucap2026.org/

Publication series

Name	European Conference on Antennas and Propagation (EuCAP): Proceedings
Publisher	IEEE
ISSN (Print)	2164-3342

Conference

Conference	20th European Conference on Antennas and Propagation 2026
Abbreviated title	EuCAP 2026
Country/Territory	Ireland
City	Dublin
Period	19/04/2026 → 24/04/2026
Internet address	https://www.eucap2026.org/

Embargoed Document

A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation
Accepted author manuscript, 2.47 MB
Licence: CC BY
Embargo ends: 25/05/2030

Cite this

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title = "A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation",

abstract = "Conventional leaky-wave antennas (LWAs) typicallyscan their beams through the broadside direction, while designscapable of side-fire beam-scanning are significantly less common. This paper presents a wideband horizontal beam-scanningLWA with stable radiation characteristics, based on a halfmode corrugated substrate integrated waveguide (HMCSIW).The antenna{\textquoteright}s leaky-wave radiation response is realized byadding square rings to the ground plane of the HMCSIW.Furthermore, the incorporation of circular rings on the antenna{\textquoteright}sfront surface enhances the stability of the side-fire beam-scanningperformance. The proposed antenna achieves horizontal beamscanning over a frequency range of 13 to 22.5 GHz, correspondingto a 53.5\% bandwidth. It exhibits a peak gain of 12.7 dBi witha maximum variation of 2.1 dBi, a beam-scanning range from -35° to 35°, and an average efficiency of approximately 90\%. Theproposed antenna can be an intriguing choice for microwaveimaging applications, spectrum analysers, and next-generationradar systems.",

author = "Goksel Turan and Gokhan Cinar and Hayrettin Odabasi and Ihsan Kanbaz and Okan Yurduseven",

year = "2025",

month = dec,

day = "12",

language = "English",

isbn = "978-1-6654-7541-9",

series = "European Conference on Antennas and Propagation (EuCAP): Proceedings",

publisher = "IEEE",

booktitle = "20th European Conference on Antennas and Propagation 2026: Proceedings",

note = "20th European Conference on Antennas and Propagation 2026, EuCAP 2026 ; Conference date: 19-04-2026 Through 24-04-2026",

url = "https://www.eucap2026.org/",

}

Turan, G, Cinar, G, Odabasi, H, Kanbaz, I & Yurduseven, O 2025, A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation. in 20th European Conference on Antennas and Propagation 2026: Proceedings . European Conference on Antennas and Propagation (EuCAP): Proceedings, IEEE, 20th European Conference on Antennas and Propagation 2026, Dublin, Ireland, 19/04/2026.

A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation. / Turan, Goksel; Cinar, Gokhan ; Odabasi, Hayrettin et al.
20th European Conference on Antennas and Propagation 2026: Proceedings . IEEE, 2025. (European Conference on Antennas and Propagation (EuCAP): Proceedings).

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

TY - GEN

T1 - A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation

AU - Turan, Goksel

AU - Cinar, Gokhan

AU - Odabasi, Hayrettin

AU - Kanbaz, Ihsan

AU - Yurduseven, Okan

PY - 2025/12/12

Y1 - 2025/12/12

N2 - Conventional leaky-wave antennas (LWAs) typicallyscan their beams through the broadside direction, while designscapable of side-fire beam-scanning are significantly less common. This paper presents a wideband horizontal beam-scanningLWA with stable radiation characteristics, based on a halfmode corrugated substrate integrated waveguide (HMCSIW).The antenna’s leaky-wave radiation response is realized byadding square rings to the ground plane of the HMCSIW.Furthermore, the incorporation of circular rings on the antenna’sfront surface enhances the stability of the side-fire beam-scanningperformance. The proposed antenna achieves horizontal beamscanning over a frequency range of 13 to 22.5 GHz, correspondingto a 53.5% bandwidth. It exhibits a peak gain of 12.7 dBi witha maximum variation of 2.1 dBi, a beam-scanning range from -35° to 35°, and an average efficiency of approximately 90%. Theproposed antenna can be an intriguing choice for microwaveimaging applications, spectrum analysers, and next-generationradar systems.

AB - Conventional leaky-wave antennas (LWAs) typicallyscan their beams through the broadside direction, while designscapable of side-fire beam-scanning are significantly less common. This paper presents a wideband horizontal beam-scanningLWA with stable radiation characteristics, based on a halfmode corrugated substrate integrated waveguide (HMCSIW).The antenna’s leaky-wave radiation response is realized byadding square rings to the ground plane of the HMCSIW.Furthermore, the incorporation of circular rings on the antenna’sfront surface enhances the stability of the side-fire beam-scanningperformance. The proposed antenna achieves horizontal beamscanning over a frequency range of 13 to 22.5 GHz, correspondingto a 53.5% bandwidth. It exhibits a peak gain of 12.7 dBi witha maximum variation of 2.1 dBi, a beam-scanning range from -35° to 35°, and an average efficiency of approximately 90%. Theproposed antenna can be an intriguing choice for microwaveimaging applications, spectrum analysers, and next-generationradar systems.

M3 - Conference contribution

SN - 978-1-6654-7541-9

T3 - European Conference on Antennas and Propagation (EuCAP): Proceedings

BT - 20th European Conference on Antennas and Propagation 2026: Proceedings

PB - IEEE

T2 - 20th European Conference on Antennas and Propagation 2026

Y2 - 19 April 2026 through 24 April 2026

ER -

A half-mode CSIW leaky-wave antenna with horizontal beam-scanning and stable radiation

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