摘要
由于卡塞格伦天线具有优良的电气和简单的结构特性,因此被广泛应用于雷达、通信、气象、遥感遥测等领域,但是由于天线副面的阻挡影响,卡塞格伦天线要实现较低的第一副瓣电平非常困难。针对限制卡塞格伦天线实现低副瓣电平的各方面因素,通过合理选择天线结构参数,精心设计高性能、高效率的双模照射馈源,在Ka频段实现了高增益、低副瓣卡塞格伦天线,完成了天线波瓣的远场测试,并给出了相应的测试结果。
Cassegrain antennas are widely used in several domains such as radar,communications,weather and remote sensing because of its good electric performance and simple structure.But due to the blockage of the subreflecter,it is difficult to acquire the low sidelobe.In this paper,we analyse several limit factors to acquire the low sidelobe.Through reasonable choice of antenna parameters and elaborative design of high performance dual-mode feed,we achieve a high gain,low sidelobe Cassegrain antenna in Ka band.Far field test it＇s electric performance has been conducted and the measured results are given.
出处
《雷达科学与技术》
2010年第6期568-570,共3页
Radar Science and Technology
关键词
卡塞格伦天线
高增益
低副瓣
双模馈源
Cassegrain antenna
high gain
low sidelobe
dual-mode feed
