Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide Analog behavioral modeling October 2019 345 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. loss in dB per unit length is 23·R/Z. This could be represented by the device in Figure 6-8. Figure 6-8 LAPLACE part The parameters R, L, and C can be defined in a .PARAM statement contained in a model file. (Refer to the online PSpice Reference Guide for more information about using .PARAM statements.) More useful, however, is for R, L, and C to be arguments passed into a subcircuit. This part has the following characteristics: NUM = EXP(-SQRT(C*s*(R+L*s))) DENOM = 1 This produces a PSpice netlist declaration like this: GLOSSY 5 0 LAPLACE {V(10)} = {exp(-sqrt(C*s*(R + L*s)))} The Laplace transform parts are, however, an inefficient way, in both computer time and memory, to implement a delay. For ideal delays we recommend using the transmission line part instead.