The aperture field distribution of the ring focus antenna is reviewed in view of the energy conservation law, and the simple formula for calculating its radiation pattern is deduced.
该文从能量守恒观点出发，讨论了副面为椭圆的环焦天线的口径场分布，并导出了计算其方向图的简单表达式。
2
When a target is placed in the focal plane of a focused apertureantenna, the backscattered power from the target may be greatly enhanced by properly choosing the aperturedistribution.
当目标处于聚焦天线焦平面上时，可通过选择口径分布来提高目标的后向散射功率。
3
For the focusing current distribution over the antennaaperture, the authors have got the field distribution diagrams of the focus and around it.