[SI-LIST] Re: Dispersion in Lossy Lines
- From: Istvan Novak <istvan.novak@xxxxxxx>
- To: steve weir <weirsi@xxxxxxxxxx>
- Date: Sun, 10 Apr 2005 10:30:09 -0400
Steve,
Just to make sure we are on the same page, what do you mean
by SP function and original image? Single pole? And the
time-domain wave-shape of the source?
Regards,
Istvan
steve weir wrote:
> Istvan, to the extent that the dispersion looks like deterministic
> group delay a SP function could theoretically reconstruct the original
> image.
>
> Regards,
>
>
> Steve.
> At 06:46 PM 4/9/2005 -0400, Istvan Novak wrote:
>
>> Adrianna,
>>
>> You can try to play with intentional mismatches
>> at the source and load ends. You can compensate
>> for part of the rise-time degradation this way,
>> but be aware that the solution will be dependent
>> on the interconnect parameters, most notably on
>> the rise time of source signal, and the total
>> loss of the trace. In other words, the more
>> generic solution you want (the wider range of
>> these parameters you want to cover), the less
>> compensation you can achieve.
>>
>>
>> Best regards,
>>
>> Istvan Novak,
>> SUN Microsystems
>>
>> Adrianna wrote:
>>
>> >Hello,
>> >
>> >I have a hypothetical question on lossy lines.
>> >
>> >Suppose you send a square pulse down a lossy line. At the far end, the
>> >square pulse maintains its overall shape but is attenuated and has a
>> >degraded rise time. Besides matching impedance at the source or adding
>> >parallel termination, which eliminate the reflections, what are some
>> >ways, if any, to counteract the loss due to dispersion?
>> >
>> >
>> >-Adrianna
>
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