The characteristic impedance of a lossy line
is a complex quantity.
In a matched approach both TDR and TDT data are used to generate a lossy line
If your combination of bit rate and interconnect length lands you above the line, in the red zone, you better worry about lossy line
The general lossy line
, which accounts for frequency dependent skin effect R [alpha] [square root] f and dielectric loss G [alpha] f, is called RLGC model (FIGURE 2b).
For the TRA procedure, the correct choice of the [+ or -] sign in Equation 11 can be readily determined since it is known[1-4] that the lossy line
(attenuator) must satisfy the inequality given by
Balancing the widest line for lowest rise time degradation, thinnest total board and acceptable cost can only he done with a simulation tool that includes lossy line
effects, such as Mentor Graphics HyperLynx or Agilent Technologies ADS.
If your combination of bit rate and interconnect length lands you in the red zone, you'd better worry about lossy line
We usually call an interconnect with a rise-time degradation problem a "lossy" interconnect, or a lossy line
The software equalizer allows you to explore the effects of equalization due to lossy lines
and crosstalk from adjacent aggressor sources.
These thermistors, shown as R1 and R2, act as lossy lines
and vary the coupling between the adjacent lines as their resistance shifts with temperature.