E-band full corporate-feed 32 × 32 slot array antenna with simplified assembly

Hui Zhao, Yunlong Lu, Yang You, Qingchun You, Yi Wang, Wen-wen Yang, Jifu Huang

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This letter presents a high-gain 32 × 32-element full corporate-feed array antenna using a simplified assembly of only two split blocks. This is made possible by a new feeding configuration which eliminates the cavity-backed layer used in conventional designs. E-plane T-junctions, as well as the single-ridge waveguide output structure, are used in the full corporate-feed network to reduce its size. This helps to realize the one-to-one corresponding excitation between the output port of the feed network and the radiation slots. In addition, a transition structure from single-ridge waveguide to double-ridge waveguide is employed to improve the impedance matching bandwidth of the radiation part. For demonstration, a prototype is designed, fabricated, and measured. Experimental results show that the array antenna achieves an impedance bandwidth of 19% (71–86 GHz) with input reflection coefficient better than −13 dB, the antenna efficiency of over 76.4%, and peak gain of better than 38.4 dBi over the entire operating band.
Original languageEnglish
Pages (from-to)518-522
JournalIEEE Antennas and Wireless Propagation Letters
Issue number4
Early online date29 Jan 2021
Publication statusPublished - Apr 2021

Bibliographical note

Funding Information:
Manuscript received December 31, 2020; accepted January 27, 2021. Date of publication January 29, 2021; date of current version April 7, 2021. This work was supported in part by the National Key R&D Program of China under Project 2018YFB1802100; in part by the National Natural Science Foundation of China under Project 61801252, Project 61631012, and Project U1809203; in part by the Zhejiang Natural Science Foundation under Project LY21F010002; Ningbo Natural Science Foundation under Project 202003N4108; in part by the Fundamental Research Funds for the Provincial Universities of Zhejiang under Grant SJLY2020001; and in part by the K. C. Wong Magna Fund in Ningbo University. The work of Yi Wang was supported by the U.K. Engineering and Physical Science Research Council under Contract EP/S013113/1. (Corresponding author: Yunlong Lu.) Hui Zhao, Yunlong Lu, Yang You, Qingchun You, and Jifu Huang are with the Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China (e-mail: 1814914436@qq.com; luyunlong@nbu.edu.cn; 897698810@qq.com; 576177657@qq.com; huangjifu@nbu.edu.cn).


  • Double-block structure
  • full corporate-feed network
  • millimeter-wave arrays
  • slot arrays

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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