TY - GEN
T1 - A Leaky-Wave Antenna Array Fed by Multi-Mode Substrate Integrated Waveguide Coupler
AU - Wu, Yanyu
AU - Wang, Gan
AU - Zhao, Junxian
AU - Wang, Guyu
AU - Zhang, Yan
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - In this paper, a dual-element substrate integrated waveguide (SIW) leaky-wave antenna (LWA) array is excited by a hybrid-mode SIW coupler to achieve the sum and difference beam scanning. Hence, the proposed antenna array can simultaneously achieve beam-scanning and sum-difference-beam in its two orthogonal planes respectively. The SIW coupler can be operated in either TE10 or TE20 modes, resulting in the even- and odd-mode excitation respectively for generating the sum and difference beams. The leaky-wave antenna element is composed of periodically deployed longitudinal slots and inductive posts with alternative offset with respect to the centerline, effectively suppressing open-stopband (OSB) effects and ensuring continuous beam scanning. The simulation demonstrates that an impedance bandwidth of 22.22% (24-30 GHz) or 12.4% (24.87-28.17 GHz) is achieved under the even-mode or odd-mode operations respectively, with an inter-mode isolation exceeding 40 dB. The sum beam exhibits a peak gain of 14.7 dBi and scans from -30° to 7.5°.
AB - In this paper, a dual-element substrate integrated waveguide (SIW) leaky-wave antenna (LWA) array is excited by a hybrid-mode SIW coupler to achieve the sum and difference beam scanning. Hence, the proposed antenna array can simultaneously achieve beam-scanning and sum-difference-beam in its two orthogonal planes respectively. The SIW coupler can be operated in either TE10 or TE20 modes, resulting in the even- and odd-mode excitation respectively for generating the sum and difference beams. The leaky-wave antenna element is composed of periodically deployed longitudinal slots and inductive posts with alternative offset with respect to the centerline, effectively suppressing open-stopband (OSB) effects and ensuring continuous beam scanning. The simulation demonstrates that an impedance bandwidth of 22.22% (24-30 GHz) or 12.4% (24.87-28.17 GHz) is achieved under the even-mode or odd-mode operations respectively, with an inter-mode isolation exceeding 40 dB. The sum beam exhibits a peak gain of 14.7 dBi and scans from -30° to 7.5°.
KW - hybrid-mode SIW
KW - leaky-wave antenna(LWA)
KW - multi-mode excitation
KW - substrate integrated waveguide (SIW)
UR - https://www.scopus.com/pages/publications/105019496613
U2 - 10.1109/IWS65943.2025.11177848
DO - 10.1109/IWS65943.2025.11177848
M3 - 会议稿件
AN - SCOPUS:105019496613
T3 - 2025 IEEE MTT-S International Wireless Symposium, IWS 2025 - Proceedings
BT - 2025 IEEE MTT-S International Wireless Symposium, IWS 2025 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th IEEE MTT-S International Wireless Symposium, IWS 2025
Y2 - 19 May 2025 through 22 May 2025
ER -