【摘要】 为了提高高频段高功率微波反射面天线的馈电效率,同时使波束波导馈线更加紧凑,提出一种新型的X波段极化可重构高功率微波辐射器结构。通过波纹喇叭辐射器产生准高斯的HE11模辐射,采用双相位修正镜组成的波束变换系统实现将准高斯波束转换为电场分布更为均匀的平顶波束或其余期望分布的波束,平顶分布的输出波束可使得馈源在相同介质窗尺寸下获得更高的功率容量,同时实现了波束传播方向的90°转弯;此外采用双圆极化栅网的级联组合,实现了对输出波束极化特性的调变。通过全电磁波仿真分析验证了该辐射器的设计思路。更多还原

【Abstract】 A majority of the high power microwave reflector antennas,which work at high frequency band,employ beam waveguide as feed line.The traditional high power beam waveguide is fed by a high power horn,whose volume is much huger and that the first mirror of the beam waveguide is large.A novel X-band high power microwave feeder with polarization reconfigurable capacity was proposed and simulated.Two phase-correct mirrors were used to transform high power microwave beam to the desired beam,so as to increase power capacity of the window.Two cascaded circular grates were employed to control the polarization of the output beam.And simulation of the feeder was laid out to check the aforementioned design.更多还原