强激光与粒子束2024，Vol.36Issue(7)：43-53,11.DOI:10.11884/HPLPB202436.230421
高功率高效率开口波导阵列天线设计与实验
Design and experiment of open waveguide array antenna with high power and high efficiency
摘要
Abstract
Aiming at the application requirements of array antenna with high-power capacity,high efficiency and low profile characteristics,a high-power capacity and high efficiency open waveguide array antenna is proposed and designed.The antenna consists of a compact 16-way waveguide power distribution network,4×4 rectangular open waveguide unit cells and ceramic sealing radome.By designing the size of the open waveguide and loading E-plane metal bar on the surface of the open waveguide,the electric field distribution on the radiation aperture surface is more uniform,and the radiation gain of the unit cell is improved.The step matching structure is used to realize the size transformation from the output port of the waveguide power distribution network to the interface of the open waveguide unit cell,and the impedance bandwidth of the system is improved.The ceramic radome loaded on the array keeps the interior of the antenna in a vacuum state and improves the power capacity of the antenna.According to the application requirements of X-band high-power array antenna,a 16-element open waveguide array with a center frequency of 9.5 GHz is optimized and designed,the simulation results show that the aperture efficiency is greater than 90%and the reflection coefficient is less than-13.9 dB in the range of 9.25-9.65 GHz.The antenna is processed and tested,the measured antenna reflection curve and radiation pattern at the center frequency are in good agreement with the simulation results,the antenna gain at the center frequency is 21.7 dBi.The overall profile height of the antenna is twice the wavelengths at the central frequency,and the power capacity in vacuum obtained by simulation is 40 MW,the antenna has the characteristics of high power capacity,high efficiency and low profile.关键词
高功率微波/高效率/开口波导/低剖面/金属栅条Key words
high-power microwave/high efficiency/open waveguide/low profile/metal bar分类
信息技术与安全科学引用本文复制引用
魏溢宏,李相强,苏奕宇,张健穹,王庆峰..高功率高效率开口波导阵列天线设计与实验[J].强激光与粒子束,2024,36(7):43-53,11.基金项目
四川省科技厅重点研发项目(2022YFG0248) （2022YFG0248）
