# lossy line

## lossy line

[′lȯs·ē ′līn]
(electricity)
Cable used in test measurements which has a large attenuation per unit length.
Transmission line designed to have a high degree of attenuation.
References in periodicals archive ?
The characteristic impedance of a lossy line is a complex quantity.
IConnect software uses two approaches to extract the losses, "matched" and "open." In a matched approach both TDR and TDT data are used to generate a lossy line model.
If your combination of bit rate and interconnect length lands you above the line, in the red zone, you better worry about lossy line effects.
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 effects.
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.
When you consider all the different effects lumped under the term signal integrity, it seems like there is a neverending list of problems to keep track of: ground bounce, ringing, crosstalk, switching noise, rail collapse, delta I noise, capacitive coupling, reflections, discontinuities, impedance miss matches, lossy lines, terminations, branches, deterministic jitter, stubs, decoupling capacitors, loop inductance, via inductance, controlled impedance, time delay, skin depth, return current, layer transitions, differential impedance, collapse of the eye, common signal termination, differential signal termination, overshoot, intersymbol interference, ring back, etc.
Two commonly occurring PCB trace configurations are microstrip and stripline which can be represented by a chain of L C sections for lossless or RLCG for lossy lines (2).
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