【摘要】 本文运用不等距直线法分析了一类毫米波E面膜片不连续性。将不连续性区域中的电磁场用位函数描述,对不连续性两侧的E面介质填充波导进行不等距离散,得到了位函数的实对称三对角矩阵方程,利用QL算法从中解得一系列本征模,然后利用不连续性面上的电磁场连续性条件,得到不连续性的等效电路参量。基于分析结果,设计和试制了Ka波段和W波段双侧E面带通滤波器,测试结果与设计指标符合较好。更多还原

【Abstract】 A class of millimeter wave E-plane strip discontinuities are analyzed by the method of lines with nonequidistant discretization. The EM fields in discontinuous regions are expressed in terms of a potential function. E-plane dielectric-filled waveguides on either side of discontinuous surface are separated nonequidistantly. The resulting real, symmetrical and tridiagonal matrix equation of potential function can be solved for a series of eigenmodes by QL-algorithm. The equivalent circuit parameters of the discontinuities are obtained by applying the continuity condition of EM fields on the discontinuous surface. Based on the present analysis, bilateral E-plane bandpass filters are designed and fabricated in Ka- and W- band. Experimental results show good agreement with theoretical predictions.更多还原