An Ultrathin Low-Profile Tightly Coupled Dipole Array Fed by Compact Zigzagging Baluns
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Published:2023-06-20
Issue:12
Volume:12
Page:2752
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ISSN:2079-9292
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Container-title:Electronics
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language:en
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Short-container-title:Electronics
Author:
Wu Weiwei1ORCID, Yan Yuchen1ORCID, Wang Shaozhi1, Ma Yuhong1, Yuan Naichang1
Affiliation:
1. State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System, School of Electronic Science, National University of Defense Technology, #109, Deya Road, Changsha 410073, China
Abstract
In this paper, we propose for the first time a novel feed approach to a tightly coupled dipole array (TCDA). Firstly, compact zigzagging microstrip feedlines are utilized as baluns to feed our array elements to obtain wideband impedance-matching characteristics. Secondly, this array is designed on ultrathin substrates aiming at obtaining ultra-tight coupling between the dipole arms of two neighboring elements. Some irreplaceable parasitic pads are developed and added to the radiating arms to improve both the impedance and radiation characteristics of the TCDA. With these technologies, a 12 × 12 TCDA prototype is designed, fabricated and measured for verification. The array achieves an impressive impedance bandwidth spanning of 4–18 GHz for S11<−10 dB. Its radiation patterns and realized gain are measured to verify its stable electromagnetic characteristics. Its realized gain is from 15 dB to 25 dB within the operating frequency band. Its efficiency is around 91%. Its measured results show good agreement with simulations.
Funder
National Defense Science and Technology Innovation Fund of the Chinese Academy
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
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