An Endfire Array Antenna for Simultaneous Operation in C- and X-Bands

Authors

  • Z. N. Jiang School of Computer Science and Information Hefei University of Technology, Hefei, China, Anhui Institute of Information Technology Wuhu, China
  • W. X. Gao School of Computer Science and Information Hefei University of Technology, Hefei, China
  • C. Peng School of Computer Science and Information Hefei University of Technology, Hefei, China

DOI:

https://doi.org/10.13052/2026.ACES.J.410309

Keywords:

Broadband, C-band, endfire array antenna, high gain, low-orbit satellite, short-range radar, Spoof Surface Plasmon Polaritons (SSPPs), X-band

Abstract

In this paper, a broadband high-gain endfire array antenna based on spoof surface plasmon polaritons (SSPPs) is designed for simultaneous C- and X-band applications. To achieve endfire radiation, the SSPP structure is truncated to reduce its field confinement capability, while a radiating branch is loaded at the end of the transmission line to guide energy radiation. A rectangular metal ground is placed at the bottom of the antenna substrate to suppress backward radiation and optimize the contact area with the connector to ensure stable feeding. The final 1×4 endfire array antenna is formed by integrating unit antennas via a Wilkinson power divider-based feed network. A prototype was fabricated and tested, showing a 50% relative impedance bandwidth (6–10 GHz), 91% simulated radiation efficiency, 87% average measured radiation efficiency, and a maximum measured gain of 11.6 dBi at 9.7 GHz. With simple structure, low cost, and excellent performance, it is promising for C-band low-orbit satellite communication and X-band short-range radar.

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Author Biographies

Z. N. Jiang, School of Computer Science and Information Hefei University of Technology, Hefei, China, Anhui Institute of Information Technology Wuhu, China

Zhaoneng Jiang was born in Lianyungang, Jiangsu, China. He received the Ph.D. degree from Nanjing University of Science and Technology, Nanjing, in 2012. Since 2013, he has been engaged in research on numerical methods for computational electromagnetism. He is currently a Professor at Hefei University of Technology and a Distinguished Professor at Anhui Institute of Information Technology. He has authored or co-authored more than 100 papers in prestigious international journals and conferences and has served as a Program Committee Member for several international conferences. His current research interests include antennas and microwave devices.

W. X. Gao, School of Computer Science and Information Hefei University of Technology, Hefei, China

Weixing Gao, a native of Zhoukou, Henan Province, China, obtained his master’s degree from Hefei University of Technology, in 2026. He has been engaged in the research of microwave antenna design since 2023.

C. Peng, School of Computer Science and Information Hefei University of Technology, Hefei, China

Cheng Peng, a native of Yangzhou, Jiangsu Province, China, obtained his master’s degree from Hefei University of Technology in 2026. He has been engaged in the research of microwave antenna design since 2023.

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Published

2026-03-30

How to Cite

[1]
Z. N. . Jiang, W. X. . Gao, and C. . Peng, “An Endfire Array Antenna for Simultaneous Operation in C- and X-Bands”, ACES Journal, vol. 41, no. 03, pp. 281–287, Mar. 2026.

Issue

2026: Vol 41 Iss 3

Section

General Submission

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