【摘要】 二维导电腔在复频域的积分方程用矩量法求解，空间离散在各取样频率上保持不变，用ＣＧＭ（共轭梯度法）解矩阵方程。在复频域，系统矩阵的性态得到改善，用基于误差最小化的外推法能产生较精确的初始解，使ＣＧＭ很快收敛。矩形柱腔的计算结果证实了新方法的有效性。更多还原

【Abstract】 The integral equation is handled using the method of momentes in thecomplex-frequency domain,the space discretization is fixed for all frequencies and the resulting matrix equation is solved by the conjugate gradient method. The condition of the system matrix is improved in the complex-frequency domain. Good initial estimates are obtained using an extrapolation scheme based on error minimization,thereby the conjugate gradient method converges very fast. The transient response is obtained by carrying out the inverse Laplace transfo rmation by an FFT algorithm. The results of a rectangular cylindrical cavity verify the effectiveness of the new method.更多还原