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Journal of Zhejiang University SCIENCE C 1998 Vol.-1 No.-1 P.

http://doi.org/10.1631/FITEE.2300742


A parasitic coupling network concept for mutual coupling utilization in wideband multielement antenna arrays*#


Author(s):  Xiaojun ZOU, Guangming WANG, Yawei WANG, Wei SONG, Hang ZHU, Ming TAN, Xuguang XU, Guoqin KANG, Binfeng ZONG

Affiliation(s):  College of Information and Communication, National University of Defense Technology, Wuhan 430035, China; more

Corresponding email(s):   zouxj0606@163.com, zongbinfeng@163.com

Key Words:  Active reflection coefficient (ARC), Antenna array, Parasitic coupling network (PCN), Scanning array, Wideband


Xiaojun ZOU, Guangming WANG, Yawei WANG, Wei SONG, Hang ZHU, Ming TAN, Xuguang XU, Guoqin KANG, Binfeng ZONG. A parasitic coupling network concept for mutual coupling utilization in wideband multielement antenna arrays*#[J]. Frontiers of Information Technology & Electronic Engineering, 1998, -1(-1): .

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publisher="Zhejiang University Press & Springer",
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%T A parasitic coupling network concept for mutual coupling utilization in wideband multielement antenna arrays*#
%A Xiaojun ZOU
%A Guangming WANG
%A Yawei WANG
%A Wei SONG
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%A Ming TAN
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A1 - Ming TAN
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A1 - Guoqin KANG
A1 - Binfeng ZONG
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Abstract: 
A novel approach to widening the active reflection coefficient (ARC) bandwidth of an antenna array, employing a parasitic coupling network (PCN), is investigated in this article. Different from traditional coupled arrays adopting space structures for enhancing the coupling in balanced-excitation antennas, a PCN derived from rigorous formulas is employed in the feeding lines of unbalanced-excitation ones. Based on a network analysis, the mutual coupling utilization condition for an (M×N)-element antenna array is initially deduced, and the PCN is implemented. Then, the PCN is realized by introducing a parasitic element and a coupling network between both the two-element H-plane and E-plane dual-layer coupled microstrip antenna arrays, resulting in 10.9% and 30.8% bandwidth enhancements compared with the original arrays, respectively. Moreover, the PCN is further expanded to multielement antenna arrays, including three- and five-element one-dimensional and 8×2 two-dimensional arrays, all exhibiting ~40% overlapped ARC bandwidths with normal radiation patterns, steady gains, and applicable scanning characteristics. The results indicate its potential application in wideband large-scale arrays.

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