This method is using two times conformal transformation method and mirror theory to calculate the characteristic impedance. 這種方法是采用兩次保角變換結合同軸線(xiàn)特性阻抗公式進(jìn)行特性阻抗計算。
Classical complex variable method is followed, but a new conformal mapping formula is proposed so that the exterior part of the parabolic crack is mapped into a unit circle. 采用了傳統的復變函數保角映射法，給出了一個(gè)新的保角變換公式，從而將拋物線(xiàn)曲裂紋外的區域映射到一個(gè)復平面的單位圓內。
