天线波束相位理论

本文简要地回顾了传统上对天线的要求,并以实例说明随着近代科学技术发展的需要,天线波束的相位特性应该引起重视和研究,在此背景下本文试图将天线波束相位和孔径电流分布等有关问题系统化,在前人工作的基础上,总结并讨论了关于相位参考点、不同相位参考点的天线方向图的变换关系、方向图的零点电平和相邻波束间的相位差,线阵电流分布的分解;提出并从理论上证明了天线同相波束的普遍条件和连续线阵的对称波束条件。归纳为几个定理,并将这些论述统称为天线波束相位理论。

PHASE THEORY OF ANTENNA BEAM

The traditional requirements for the antenna are reviewed. Under such background and on the basis of previous work, the subjects concerning the phase of antenna beam and the current distribution of antenna aperture, such as the phase reference point, the trans-formation relationship of the far field patterns corresponding to different phase reference points of an antenna, the null level and phase difference between the adjacent beams, and the resolution of current distribution of the linear array are systematized and discussed. The general condition of the beam in phase and the condition of the symmetric beam of a continuous linear array are given and proved theoretically. Some theorems are proposed, and the whole is termed the phase theory of antenna beam.