强激光与粒子束2025，Vol.37Issue(6)：48-56,9.DOI:10.11884/HPLPB202537.240411
基于可变电容的X波段高功率宽频带波束扫描反射阵列天线设计
Design of X-band high power wide tuning bandwidth electronical beam scanning reflectarray antenna based on varactor
摘要
Abstract
To address the wideband and beam scanning requirements of high-power microwave(HPM)systems,this paper proposes an X-band varactor-based high-power wideband beam-scanning reflectarray antenna.The antenna employs a linearly polarized horn feed and a sandwich-structured embedded patch element,where the nested dual-resonance structure integrated with varactors simultaneously extends the phase tuning range(360°)and operational bandwidth.By eliminating abrupt structural discontinuities and adopting a sandwich dielectric configuration,the design effectively suppresses triple-junction formation,achieving a power capacity of 5 MW in 0.1 MPa SF6 environment.Varactor capacitance adjustment enables a 12%relative tuning bandwidth within 8.55-9.65 GHz.Simulations of an 11×11 rectangular grid reflectarray demonstrate a maximum gain of 25.12 dBi with 54.39%aperture efficiency for a 242 mm aperture and full-band 0°-20° beam scanning capability.Compared with existing technologies,this design exhibits superior tuning bandwidth(12%)and power capacity(5 MW),providing an effective solution for wideband beam control in HPM systems.关键词
高功率微波/宽频带/电控波束扫描/反射阵列天线/可变电容Key words
high-power microwave/wide band/electronical beam scanning/reflectarray antenna/varactor分类
数理科学引用本文复制引用
张炀,李相强,张健穹,王庆峰,唐先锋..基于可变电容的X波段高功率宽频带波束扫描反射阵列天线设计[J].强激光与粒子束,2025,37(6):48-56,9.基金项目
四川省科技厅重点研发项目(2022YFG0248) （2022YFG0248）
国家自然科学基金项目(62301459) （62301459）
