Analysis of microstrip step discontinuities in mics printed on anisotropic substrates using the method of moments

Abstract

This article presents a full‐wave analysis of microstrip step discontinuities in shielded MICs that are printed on anisotropic substrates, characterized by both permittivity and permeability tensors. The numerical procedure utilizes the method of moments with rooftop basis functions for current expansion and testing. Although the work presented herein emphasizes step junctions, more complicated microstrip discontinuities can easily be realized as well. Numerical results show good agreement with independent data for biaxial substrates. © 1994 John Wiley & Sons, Inc.

Analysis of microstrip discontinuities on suspended and grounded anisotropic substrates

“…Frequency (GHz) Figure 4 Normalized parallel admittance versus eyU 10 The step discontinuity represents a common form of impedance mismatch that occurs in practical MICs. The validation of the SDA-MOM formulation for the step junction for a conventional grounded substrate is available elsewhere [lo], and, hence, will not be repeated here.…”