非同相口径场瞬态辐射的计算  

Calculation of Transient Radiation Parameters of Aperture of Non-Cophase

作　　者：洪洲 张建华[2] 赵剑国[2] 

机构地区：[1]61251部队 [2]解放军电子工程学院

出　　处：《微波学报》2009年第2期34-37,69,共5页Journal of Microwaves

摘　　要：利用电磁脉冲的口径瞬态辐射场计算公式,针对圆形口径的线性相移、平方律相移等非同相口径场情况,计算了辐射高斯脉冲时的能量方向图、半能量波瓣宽度、面积利用系数等参数。计算表明,对于圆形口径非同相口径场,最大辐射场的方向为口径面法线方向,同时能量方向图关于口径面法线方向对称;随着口径的增大,波瓣变窄,无副瓣;随着平方律相移的滞后参数的增加,波瓣变宽,主瓣不分裂。Transient radiation parameters are calculated by using the calculation formulation of transient radiated field of aperture, which include radiation energy pattern, half-energy beam-width and area-utilize coefficient, and it is for the case that the aperture field is non-cophase with linear phase-shifting or quadratic phase-shifting excited by Gauss pulse. The calculation results show that the direction of the maximum radiation is along the aperture normal and the energy pattern is rotational symmetry around the aperture normal, and as the size of the aperture become larger, the beam-width gets narrower; and the beam-width gets broader with the lagging parameter of quadratic phase-shifting increase and there is no minor lobes.

关 键 词：瞬态辐射 口径场 能量方向图 波瓣宽度 面积利用系数 

分 类 号：TN821[电子电信—信息与通信工程]