[SI-LIST] Trace coating!

Hello!
    I am new here so forgive me my ignorance, but I have two questions:
1. Has anyone of You considered influence of trace coating (organic
coatings, hard gold, electroless nickel gold plating etc. - what thickness
of each layer is the most suitable and as always cost effective) on high
speed circuits, especially pulse circuits with pulse times less than 1ns.
2. Does anyone know the other way to generate subnanosecond pulses than step
recovery diodes and shorted transmission lines and their modulation
techniques?

Thank You in advance

Pawel
Cork Institute of Technology


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