共轭梯度及快速傅里叶算法在计算多边形状线天线间互耦中的应用

CG-FFT for the Solution of Mutual Coupling Between Polygonal Linear Antennas

在采用矩量法计算多边形状线天线间互耦的过程中应用共轭梯度及快速傅里叶算法，导出了计算公式，能方便地对电大尺寸和电小尺寸的散射体进行有效的数值运算。以三角形环天线和偶极天线为例计算出了天线上电流的幅度和相位分布以及该法与高斯法的比较结果。结果表明共轭梯度及快速傅里叶算法的运用可节省大量计算机内存并提高计算精度。

The conjugate gradient method and the fast Fourier transform(CG-FFT)are used in ealculating the mutual coupling between polygonal linear antennas by the moment method,espeaily for electrically large-dimensional and small-dimensional scattering bodies。Comparison with Gauss method,a great deal of internal storage Of computer is saved and the accuracy of ealculation is improved,As a typical example,the current amplitude and phase on the triangular loop antenna and the dipole antenna are obtainde respectively。Finally,the mutual coupling between a triangular loop antenna and a dipole antenna is given。