Based on geometrical optics theory, the re-radiation is analysed by using aperturefield method.
根据几何光学理论，利用孔径场法进行了分析。
2
Next the electromagnetic field on aperture was found, and then proceeded to sum up five common features of aperturefield of parabolic antenna.
接着求出口径上的电磁场，进而归纳出抛物面天线口径场的四大共同特征。
3
The paper introduces a novel sloted antenna which is sloted on the width side of a metallic waveguide in accordance with requirements of aperturefield.