Active Retrodirective Rotman Lens Antenna for Wide-Angle RCS Enhancement

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Hanieh Kiani Amiri;Michal Okoniewski
{"title":"Active Retrodirective Rotman Lens Antenna for Wide-Angle RCS Enhancement","authors":"Hanieh Kiani Amiri;Michal Okoniewski","doi":"10.1109/OJAP.2025.3554043","DOIUrl":null,"url":null,"abstract":"This paper presents measurement results and analysis of an innovative active retrodirective Rotman lens antenna architecture, designed to enhance the radar cross-section (RCS) for backscattering applications. Unlike conventional passive retrodirective systems, our design integrates custom-designed reflection amplifiers to significantly boost backscattered signal gain while maintaining low DC power consumption. A novel biasing technique enables independent phase and gain control of the amplifiers, ensuring a uniform array response and reducing DC power consumption by approximately 30%. Experimental monostatic RCS measurements at 5.15 GHz with a linearly polarized incident wave demonstrate a uniform RCS response over a ±40° scan angle. The integration of reflection amplifiers enhances backscattering, allowing the lens to maintain a consistent −0.5 dB RCS across the entire scan angle, which is 9 dB higher than the average RCS of a metal plate with the same effective aperture. The compact design (approximately <inline-formula> <tex-math>$6\\lambda \\times 6\\lambda $ </tex-math></inline-formula>) and ultra-low power consumption (approximately 0.19 mW) make this system well-suited for low-power radar applications, such as mm-wave automotive radar sensors. These results confirm the feasibility of active-loaded phase conjugating systems for high-performance backscattering applications.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"894-901"},"PeriodicalIF":3.5000,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10937983","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Open Journal of Antennas and Propagation","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10937983/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0

Abstract

This paper presents measurement results and analysis of an innovative active retrodirective Rotman lens antenna architecture, designed to enhance the radar cross-section (RCS) for backscattering applications. Unlike conventional passive retrodirective systems, our design integrates custom-designed reflection amplifiers to significantly boost backscattered signal gain while maintaining low DC power consumption. A novel biasing technique enables independent phase and gain control of the amplifiers, ensuring a uniform array response and reducing DC power consumption by approximately 30%. Experimental monostatic RCS measurements at 5.15 GHz with a linearly polarized incident wave demonstrate a uniform RCS response over a ±40° scan angle. The integration of reflection amplifiers enhances backscattering, allowing the lens to maintain a consistent −0.5 dB RCS across the entire scan angle, which is 9 dB higher than the average RCS of a metal plate with the same effective aperture. The compact design (approximately $6\lambda \times 6\lambda $ ) and ultra-low power consumption (approximately 0.19 mW) make this system well-suited for low-power radar applications, such as mm-wave automotive radar sensors. These results confirm the feasibility of active-loaded phase conjugating systems for high-performance backscattering applications.
用于广角RCS增强的主动反向罗特曼透镜天线
本文介绍了一种创新的有源反向定向罗特曼透镜天线结构的测量结果和分析,该结构旨在提高后向散射应用的雷达截面(RCS)。与传统的无源反向指示系统不同,我们的设计集成了定制设计的反射放大器,可显着提高反向散射信号增益,同时保持低直流功耗。一种新颖的偏置技术可以实现放大器的独立相位和增益控制,确保均匀的阵列响应并将直流功耗降低约30%。在5.15 GHz线偏振入射波下的单稳态RCS实验测量表明,在±40°扫描角范围内,RCS响应均匀。反射放大器的集成增强了后向散射,使透镜在整个扫描角度内保持一致的- 0.5 dB RCS,比具有相同有效孔径的金属板的平均RCS高9 dB。紧凑的设计(约6\lambda \乘以6\lambda $)和超低功耗(约0.19 mW)使该系统非常适合低功耗雷达应用,如毫米波汽车雷达传感器。这些结果证实了有源负载相位共轭系统在高性能后向散射应用中的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信