A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications

Zijian Shao; Wenkai Fang; Emir Karahan; Kaushik Sengupta

doi:10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577

A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications

Zijian Shao
, Wenkai Fang
, Emir Karahan
, Kaushik Sengupta

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

Abstract

A novel wideband antenna is proposed for millimeter-wave radar applications based on a substrate integrated cavity (SIC). Specifically, a magnetoelectric dipole is integrated as the feeding structure to excite the dominant modes of the open cavity, enabling wideband operation while suppressing surface-wave excitation through low-cost printed circuit technology. To validate the design, a prototype antenna centered at 77 GHz was designed and fabricated. Measured results show that the proposed antenna achieves a 53% bandwidth with low cross-polarization levels across the wide operational bandwidth. Leveraging its low-profile planar structure and good radiation characteristics, the proposed antenna emerges as a promising candidate for millimeter-wave short-range radar applications.

Original language	English (US)
Title of host publication	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1785-1787
Number of pages	3
ISBN (Electronic)	9798331523671
DOIs	https://doi.org/10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577
State	Published - 2025
Externally published	Yes
Event	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Ottawa, Canada Duration: Jul 13 2025 → Jul 18 2025

Publication series

Name	IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)	1522-3965
ISSN (Electronic)	1947-1491

Conference

Conference	2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025
Country/Territory	Canada
City	Ottawa
Period	7/13/25 → 7/18/25

All Science Journal Classification (ASJC) codes

Electrical and Electronic Engineering

Keywords

laminated resonant antenna (LRA)
millimeter-wave antennas
Substrate integrated cavity (SIC)
wideband antennas

Access to Document

10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577

Cite this

Shao, Z., Fang, W., Karahan, E., & Sengupta, K. (2025). A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications. In 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings (pp. 1785-1787). (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577

Shao, Zijian ; Fang, Wenkai ; Karahan, Emir et al. / A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications. 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 1785-1787 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

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title = "A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications",

abstract = "A novel wideband antenna is proposed for millimeter-wave radar applications based on a substrate integrated cavity (SIC). Specifically, a magnetoelectric dipole is integrated as the feeding structure to excite the dominant modes of the open cavity, enabling wideband operation while suppressing surface-wave excitation through low-cost printed circuit technology. To validate the design, a prototype antenna centered at 77 GHz was designed and fabricated. Measured results show that the proposed antenna achieves a 53\% bandwidth with low cross-polarization levels across the wide operational bandwidth. Leveraging its low-profile planar structure and good radiation characteristics, the proposed antenna emerges as a promising candidate for millimeter-wave short-range radar applications.",

keywords = "laminated resonant antenna (LRA), millimeter-wave antennas, Substrate integrated cavity (SIC), wideband antennas",

author = "Zijian Shao and Wenkai Fang and Emir Karahan and Kaushik Sengupta",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 ; Conference date: 13-07-2025 Through 18-07-2025",

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language = "English (US)",

series = "IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Shao, Z, Fang, W, Karahan, E & Sengupta, K 2025, A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications. in 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), Institute of Electrical and Electronics Engineers Inc., pp. 1785-1787, 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025, Ottawa, Canada, 7/13/25. https://doi.org/10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577

A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications. / Shao, Zijian; Fang, Wenkai; Karahan, Emir et al.
2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2025. p. 1785-1787 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

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

TY - GEN

T1 - A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications

AU - Shao, Zijian

AU - Fang, Wenkai

AU - Karahan, Emir

AU - Sengupta, Kaushik

PY - 2025

Y1 - 2025

N2 - A novel wideband antenna is proposed for millimeter-wave radar applications based on a substrate integrated cavity (SIC). Specifically, a magnetoelectric dipole is integrated as the feeding structure to excite the dominant modes of the open cavity, enabling wideband operation while suppressing surface-wave excitation through low-cost printed circuit technology. To validate the design, a prototype antenna centered at 77 GHz was designed and fabricated. Measured results show that the proposed antenna achieves a 53% bandwidth with low cross-polarization levels across the wide operational bandwidth. Leveraging its low-profile planar structure and good radiation characteristics, the proposed antenna emerges as a promising candidate for millimeter-wave short-range radar applications.

AB - A novel wideband antenna is proposed for millimeter-wave radar applications based on a substrate integrated cavity (SIC). Specifically, a magnetoelectric dipole is integrated as the feeding structure to excite the dominant modes of the open cavity, enabling wideband operation while suppressing surface-wave excitation through low-cost printed circuit technology. To validate the design, a prototype antenna centered at 77 GHz was designed and fabricated. Measured results show that the proposed antenna achieves a 53% bandwidth with low cross-polarization levels across the wide operational bandwidth. Leveraging its low-profile planar structure and good radiation characteristics, the proposed antenna emerges as a promising candidate for millimeter-wave short-range radar applications.

KW - laminated resonant antenna (LRA)

KW - millimeter-wave antennas

KW - Substrate integrated cavity (SIC)

KW - wideband antennas

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M3 - Conference contribution

AN - SCOPUS:105030890231

T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)

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EP - 1787

BT - 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings

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T2 - 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025

Y2 - 13 July 2025 through 18 July 2025

ER -

Shao Z, Fang W, Karahan E, Sengupta K. A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications. In 2025 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, AP-S/CNC-USNC-URSI 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2025. p. 1785-1787. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). doi: 10.1109/AP-S/CNC-USNC-URSI55537.2025.11266577

A Wideband Substrate Integrated Cavity Antenna for Millimeter-Wave Short-Range Radar Applications

Abstract

Publication series

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All Science Journal Classification (ASJC) codes

Keywords

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