Calculation of Propagation Eigenmode for Stripline with Finite Thickness based on Equivalent Network along Horizontal or Vertical Direction

Exact propagation eigenmode for stripline with finite thickness is important for practical design of MIC. So far propagation eigenmode for stripline with zero thickness is given exactly by conformal transformation method, but not for that with finite thickness. In order to treat this problem analytically, lateral equivalent network in general is derived and applied to obtain equivalent network of stripline structure along horizontal or vertical direction. Equivalent network for two direction are different, but gives same propagation eigenmode, which demonstrate the usefulness of the derived lateral equivalent network.