一、引言由于可以消除遮挡,偏置双镜天线可以获得优越的电性能,因而引起人们的注意。但是一般来说,偏置双镜天线由于非对称性将产生交叉极化。田中和水泽提出适当选择喇叭和付镜轴的偏角,可以消除主镜孔径场的交叉极化,简称为消交叉极化原则。利用Galindo等提出的方法控制天线孔径场的幅相分布可以提高偏置双镜天线的增益或品质因素,这就是所谓改进型偏置双镜天线。Galindo和Mittra等提出这种天线的计算方法,但没有考虑交叉极化问题。考虑到田中和水泽的消交叉极化原则可以作为计算改进型双镜天线的雏形,以便降低交叉极化。因此本文深入论述田中和水泽的消交叉极化原则。同时我们还提出一个计 I. INTRODUCTION Due to its ability to eliminate occlusions and biased dual-mirror antennas, superior electrical performance can be obtained, which has aroused people’s attention. However, in general, biased two-mirror antennas will generate cross-polarization due to asymmetry. Tanaka and Mizusawa put forward the appropriate choice horn and mirror shaft off angle, can eliminate the main mirror aperture field cross-polarization, referred to as the cross-polarization cross-elimination principle. Using the method proposed by Galindo et al. To control the amplitude and phase distribution of the antenna aperture field can improve the gain or quality factor of the bi-mirrored antenna, which is called modified biased two-mirror antenna. Galindo and Mittra proposed such a method of calculating the antenna, but did not consider the issue of cross-polarization. Taking into account Tanaka and Mizusawa eliminate cross-polarization principle can be used as a calculation of the prototype dual-antenna antenna to reduce cross-polarization. Therefore, this article discusses Tanaka and Mizusawa cross-polarization cross-polarization principle. At the same time, we also put forward a plan