Frequency-Dependent Characteristics of an Asymmetric Suspended Stripline and its Open End Discontinuity for Millimeter Wave Applications

The dominant and higher order modes in an asymmetric suspended stripline (ASSL) are accurately described from a thorough spectral-domain approach. Then, using the modal analysis, coupling coefficients between eigenmodes at an open end ASSL discontinuity, that have to be introduced into a scattering matrix formulation, are directly computed in the spectral domain. Scattering parameters of the dominant mode in the Ka band for an open end ASSL are presented.