矩形波导窄边斜缝的等值并联导纳

The Equivalent Shunt Admittance of Inclined Slot in the Narrow Wall of a Rectangular Waveguide

本文给出一个矩形波导窄边斜缝等值并联导纳的计算公式.通过利用无限镜象阵技术和二重性原理,计算波导内等效磁流的自反应,避免了由并矢格林函数计算时级数发散的困难,并讨论了波导外磁流自反应的计算问题.数值计算表明,理论与实验的一致性较好.

A formula for evaluating the equivalent shunt admittance of an inclined slot in the narrow wall of a rectangular waveguide is presented. By using the infinite image array technique and the duality of electricity and magnetism, the difficulty involving the divergency of the series which is related to the dyadic Green's function in the guide has been avoided. The computation problem of self reaction of the magnetic current outside the guide is also discussed. The numerical results show that good agreement between the theory and experiment has been achieved.