电子元件与材料2026，Vol.45Issue(1)：52-59,8.DOI:10.14106/j.cnki.1001-2028.2026.1452
基于变容二极管的高功率波束扫描折叠反射阵列天线设计
Design of varactor-tuned beam steering folded reflectarray antenna for high power application
摘要
Abstract
To meet the requirements of high power microwave(HPM)systems for antennas with high power capacity,low profile and flexible beam steering,this work proposed a varactor-tuned folded reflectarray antenna(FRA).The main reflectarray surface adopted a four-arm patch element with varactor diodes in orthogonal directions.The design of a multilayer and rounded-corner structure suppressed local electric field concentration and increased the power handling capacity.The sub-reflector used metallic gratings with polarization selectivity,and the feed was a linearly polarized horn antenna.Independent bias tuning enabled each element to realize continuous 360° phase control and linear to cross-linear polarization conversion simultaneously,with a polarization conversion ratio(PCR)above 97.5%.The sub-reflector folded the propagation path and reduced the antenna profile.A 9×9 prototype was fabricated.At 4.3 GHz,the antenna achieved 15.39 dBi gain and 41.36%aperture efficiency.Under a 0.1 MPa SF6 environment,the power reached reached 3.6 MW,and a beam-steering range of-20° to 20° was obtained.The design provides an approach for low profile and beam-steerable reflectarray antennas in HPM applications.关键词
高功率容量/折叠反射阵列天线/变容二极管/极化转换/波束控制Key words
high power capacity/folded reflectarray antenna/varactor diode/polarization conversion/beam steering分类
信息技术与安全科学引用本文复制引用
王祚,李相强,邓江,张健穹,王庆峰..基于变容二极管的高功率波束扫描折叠反射阵列天线设计[J].电子元件与材料,2026,45(1):52-59,8.基金项目
国家自然科学基金(62531021,62301459) （62531021,62301459）
