A Broadband 1-bit Frequency-Scanning Reflectarray for Near-Field Sensing Application

被引：0
作者：
Wu, Jinyu [1 ]
Zhang, Qingfeng [1 ]
Liu, Baiyang [1 ]
机构：
[1] Southern Univ Sci & Technol, Shenzhen, Peoples R China
来源：
2022 IEEE MTT-S INTERNATIONAL MICROWAVE WORKSHOP SERIES ON ADVANCED MATERIALS AND PROCESSES FOR RF AND THZ APPLICATIONS, IMWS-AMP | 2022年
基金：
中国国家自然科学基金;
关键词：
Reflectarray; Frequency-scanning; Near-field sensing;
D O I：
10.1109/IMWS-AMP54652.2022.10106864
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
To achieve wide-angle frequency scanning, a broadband 1-bit millimeter-wave reflectarray with 30x30 unit cells is proposed. Here we design a meta-atom in two states with a phase difference of 180 degrees +/- 30 degrees from 16 to 29 GHz to realize a 1-bit coding reflectarray. The 1-bit phase distribution is arrayed based on generalized Snell's law under oblique incidence. The simulation results show the proposed reflectarray has the scanning range from 0 degrees to 36 degrees in the operating frequency band (16-29 GHz), indicating that the proposed reflectarray has the ability of wide-angle frequency scanning. Compared to existing frequencyscanning arrays, the proposed reflectarray has the advantages in scanning range and maximum gain. Therefore, the proposed reflectarray may have potential application in near-field sensing systems.
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页数：3
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