采用Fourier-Bessel方法计算椭圆口径面天线远场

在卫星和地面天线的应用中,经常需要采用椭圆形口径面天线;与其他方法相比,傅里叶-贝塞尔方法具有计算速度快,数学形式简练,易于理解和应用的优点。文章在物理光学法和圆口径面的基础上,提出了一种椭圆口径面的傅里叶-贝塞尔展开分析方法,适用于抛物面和赋形反射面天线的辐射远场的快速分析和计算,并采用模拟计算与直接积分法相比较,证明了该方法的可靠性和有效性。

Calculation of Far-field of an Elliptical Aperture Reflector Antenna by Fourier-Bessel Method

In the applications of satellite and ground antenna,the reflectors of an elliptical aperture are often used.Compared with other methods,the Fourier-Bessel method is of the advantages of fast calculation,simple math format,easy understanding and application.Based on the PO and circular aperture,a Fourier-Bessel method was developed to calculate and analyze the radiation fields of parabolic and shaped reflectors.Compared with the direct integral method,the reliability and validity of this method was proved.