An S-Band Low-Probability Intercept Radar Antenna With Low Sidelobe Level

Authors

  • Zhengliang Lv China Academic Electronic and Information Technology Beijing 100041, China
  • Shuai Yan China Academic Electronic and Information Technology Beijing 100041, China
  • Zizhen Zheng China Academic Electronic and Information Technology Beijing 100041, China
  • Yi Zeng National Key Laboratory of Radar Detection and Sensing Xi’an, Shaanxi 710071, China
  • Xing Wang National Key Laboratory of Radar Detection and Sensing Xi’an, Shaanxi 710071, China

DOI:

https://doi.org/10.13052/2026.ACES.J.410209

Keywords:

Array antenna, high-gain, low probability of interception (LPI) radar, low sidelobe level (SLL)

Abstract

A half-wave dipole array antenna design for S-band low probability of intercept (LPI) radar is presented. The antenna structure comprises 24×2 linearly polarized dipole elements. A 24-column Taylor distribution weighted feed in the azimuth plane realizes low sidelobe level (SLL) of −26.0 dB. The antenna achieves an operational bandwidth of 100 MHz with a voltage standing wave ratio (VSWR) below 1.4. A prototype was fabricated and measured for verification. The measured gain is 22.3 dBi, with half-power beamwidth (HPBW) of 6.5∘ and 24.5∘ in azimuth and elevation, respectively. Results show that the array scans from −45∘ to +45∘ with a gain loss below 2.1 dB, while maintaining an SLL under −20.2 dB across this wide scanning range.

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Author Biographies

Zhengliang Lv, China Academic Electronic and Information Technology Beijing 100041, China

Zhengliang Lv obtained his doctoral degree from Xidian University in 2014. He is currently a senior engineer at the China Academic Electronic and Information Technology. He has long been engaged in system integration, electromagnetic simulation, electromagnetic compatibility design, and other work related to major integrated electronic information systems. He has published over ten papers in core domestic and international journals such as the Chinese Journal of Electronics, Journal of Electromagnetic Waves and Applications, and Microwave Journal.

Shuai Yan, China Academic Electronic and Information Technology Beijing 100041, China

Shuai Yang received the B.Sc. degree in electronics and information engineering, and the Ph.D. degree in communication and information systems from the Harbin Institute of Technology (HIT), Harbin, China. His current research interests include electromagnetic metasurfaces, computational electromagnetics (CEM), and engineering electromagnetic compatibility (EMC).

Zizhen Zheng, China Academic Electronic and Information Technology Beijing 100041, China

Zizhen Zheng obtained her master’s degree from Beijing Institute of Technology, China, in 2024 and is currently an engineer at the China Academic Electronic and Information Technology. She is engaged in array antenna design, electromagnetic compatibility design, and has published multiple papers in journals such as Electronics and International Conference on Microwave and Millimeter Wave Technology.

Yi Zeng, National Key Laboratory of Radar Detection and Sensing Xi’an, Shaanxi 710071, China

Yi Zeng was born in Zhejiang, China, in 2000. He received the B.Eng. degree in electronic engineering from Xidian University, Xi’an, China, in 2022, where he is currently pursuing the Ph.D. degree in electronic science and technology. His focus is antenna analysis and design.

Xing Wang, National Key Laboratory of Radar Detection and Sensing Xi’an, Shaanxi 710071, China

Xing Wang received the Ph.D. degree from Xidian University, Xi’an, China, in 2011. He is currently a Full Professor with the National Key Laboratory of Radar Detection and Sensing, Xidian University. His research interests include computational electromagnetic, fast algorithms for electromagnetic scattering and radiation, hybrid methods, and EMC analysis.

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Published

2026-02-20

How to Cite

[1]
Z. . Lv, S. . Yan, Z. . Zheng, Y. . Zeng, and X. . Wang, “An S-Band Low-Probability Intercept Radar Antenna With Low Sidelobe Level”, ACES Journal, vol. 41, no. 02, pp. 180–185, Feb. 2026.

Issue

2026: Vol 41 Iss 2

Section

Advances in Next-Generation Antenna Systems and Their Testing Methodologies

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