The delay of the line with repeaters is given by
where the delay of a repeater is lb, the line has length I, and
each section has length
Is. The section length that minimizes delay is calculated by
differentiating with respect to Is and setting the result to zero.
This gives an optimal section length of
These equations are derived for an inverter pair and it still works as you asked.
Any changes if we insert inverter pairs instead of inverters to avoid polarity problem? N Segments...