Search

The actual dielectric loss for transmission lines in thin-film multichip modules is much higher than the calculations from the geometry and bulk material properties. The experiment analyzes signal propagation on transmission lines, fabricated in thin polyimide films on silicon substrates. A through-reflect-line like approach is used to compute the effective dielectric loss. The characterization of microstrip and stripline transmission lines requires accurate modeling of stripline transmission and microstrips.

A study of transmission lines on semiconductor substrates, with the help of analytical formulae for computing the disturbances and admittances of the distribution lines, provides the electrical broadband properties of these transmission lines. The results from this study coincide with experimental data, suggesting the applicability of this technique.

A procedure involving dimensional analysis helps develop a delay macromodel for both lossy and lossless point-to-point transmission lines. This analysis eliminates the inaccuracy due to the complexity of delay expression in lossy lines. A four-argument delay function involving a second-order polynomial minimizes the computational cost and gives almost precise predictions.

Use of the SPICE3 transient method for an analysis of transmission lines is correct as it involves multi-conductor D-C lossless lines. This study, combined with a calculation for transmission lines, enables the efficient designing of electronic circuits with good speed and performance. The calculation and simulation of lossy transmission lines becomes simpler when the D-C losses are considered.

The recursive convolution integration with impulse response functions gives a good method of transient response simulation of lossy coupled transmission lines. Active nonlinear loads cause the termination of these frequency dependent lines. Wave propagation function and orthogonal expansion of transmission-line characteristic impedance in time and spatial domain help derive the impulse response functions.