A Low-profile Dual-band Dual-polarization Co-aperture Array Antenna with High Isolation

作者

  • Liang-Xin Xia National Key Laboratory of Antennas and Microwave Technology Xidian University, Xian, 710075, China
  • Qi lei Zhou National Key Laboratory of Antennas and Microwave Technology Xidian University, Xian, 710075, China
  • Neng-Wu Liu National Key Laboratory of Antennas and Microwave Technology Xidian University, Xian, 710075, China
  • Guang Fu National Key Laboratory of Antennas and Microwave Technology Xidian University, Xian, 710075, China

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https://doi.org/10.13052/2023.ACES.J.381006

关键词:

dual-polarization, high-isolation, multi-layer network, U-shaped bending dipoles

摘要

This paper proposes a low-profile high-isolation dual-polarization array antenna operating in the L/S band. The radiating unit of the array antenna adopts U-shaped bending dipoles to realize the staggered arrangement of high- and low-band units, and is connected to the feeding network by a coaxial cable. To achieve the non-influence of high-band and low-band feed networks, multi-layer printing technology is used and grooves are etched on the metal plate. In order to reduce the coupling of the high- and low-band dipoles at low frequency, a bandpass filter is added to the high-band feed network, which greatly improves the isolation at low-frequency. The measured results show that the impedance bandwidth of the array is 4.5% (0.971-1.015 GHz) and 7.5% (1.89-2.04 GHz), with gains of 15 and 19 dBi at 1 GHz and 2 GHz, respectively. And the isolation between the dual-polarized ports more than 50 dB and 35 dB was achieved at 1 GHz and 2 GHz, respectively. The proposed array will have practical value in L/S band full-duplex wireless communication systems.

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Liang-Xin Xia was born in Anhui, China, in February 1997. He received the B.S. degree in electronic information technology from Xidian University, Xi’an, China, in 2019, where he is currently pursuing the Ph.D. degree. His current research interests include Fabry-Perot cavity antennas, wide-beam antennas, and beam-shaped array antennas.

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Qi lei Zhou was born in Shaanxi, China, in September 1997. He received the B.S. degree in electronic information technology from Xidian University, Xi’an, China, in 2019, where he is currently pursuing the Ph.D. degree. His current research interests include broadband miniaturized circularly polarized antennas and millimeter wave phased arrays.

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Neng-Wu Liu was born in Changde, China. Since 2018, he has been an associate professor with Xidian University. His current research interests include the designs of antenna theory, low-profile antennas, multimode antennas, wideband antennas, patch antennas, filtering antennas, and phased arrays.

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Guang Fu received the B.S. and M.S. degrees in electromagnetic field and microwave technology from Xidian University, Xi’an, China, in 1984 and 1991, respectively. He became a professor with Xidian University, in 2001. His current research interests include theory and engineering of antennas and antenna arrays.

参考

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已出版

2023-10-31

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[1]
L.-X. Xia, Q. lei Zhou, N.-W. Liu, 和 G. Fu, 《A Low-profile Dual-band Dual-polarization Co-aperture Array Antenna with High Isolation》, ACES Journal, 卷 38, 期 10, 页 792–798, 10月 2023.

期

2023: Vol 38 Iss 10

栏目

Mode-inspired antennas/circuits for 5G/6G applications