Frequency and time domain analysis of microstrip lines with multiple right-angle bend discontinuities

Abstract

Frequency-dependent scattering matrices for the composite transmission structures of single microstrip lines having two right-angle bend discontinuities have been determined. The scattering parameters found by a mode-matching technique are used in the computations of the time domain responses for trapezoidal pulse inputs. From the time domain responses the delays, distortions and re¯ections are found. The contributions of higher-order modes, which may be signi®cant in deciding the signal¯ow behaviour in these types of transmission structure, are also identi®ed.

Optimization of uniaxial perfectly matched layer parameters for finite difference time domain simulation and application to coupled microstrip lines with multiple bend discontinuities

“…A planar-lumped model was used in [3] for the analysis of coupled microstrip lines with discontinuities, but for high-speed applications this approach may not yield accurate results. A full-wave analysis of a single microstrip line with single and multiple bends was carried out using the mode matching technique [4,5] and Green's function approach [6]. The method of moments [7] and the spectral domain method [8] were also used to study the effects of discontinuities in microstrip lines.…”