论文部分内容阅读
Ⅰ引言在较早的那篇论文中,我们叙述了一种预算天线罩影响的近似射线追踪法。对于包围一个直径为16个波长的天线的轴对称天线罩而言,已经给出了计算的天线罩瞄准误差及天线方向图。在这篇文章中,我们把上述理论用于小型天线罩,而且天线罩是轴对称的,所包围的天线直径为五个波长。这种小型天线罩的横截面从尖端处的不到一个波长到底部的6个波长不等。较小的曲率半径是重要参数,因为天线罩在局部上被近似为平面。这里所研究的天线罩是一旋转面,此旋转面是由一条冯·卡曼形曲线旋转而成的,而较早的论文中,天线罩是一卵形的。目前所研究的天线是一裂缝阵,而
I. INTRODUCTION In the earlier paper, we described an approximate ray tracing method of estimating radome influence. For axisymmetric radomes enclosing an antenna having a diameter of 16 wavelengths, the calculated radome targeting error and antenna pattern have been given. In this article, we apply the above theory to small radomes, which are axisymmetric and enclose an antenna of five wavelengths in diameter. The cross section of this small radome varies from less than one wavelength at the tip to 6 wavelengths at the bottom. The smaller radius of curvature is an important parameter because the radome is approximated as a plane locally. The radome studied here is a rotating surface that is rotated by a von Karman-shaped curve, whereas in earlier papers the radome was oval. The antenna studied so far is a crack matrix