Thanks for information and reference. You are correct that the spectrum never goes above the envelope of the single pulse spectrum (Sinx/x)^2. It all makes better sense now. I was hoping, however, to find a reference to the derivation and unusual property of the function (SinNz/Sinz)^2?
Norman
I have a spectrum analyzer and pulse generator. I decided to see what the spectrum of a sequence of pulses was and found some surprises. The pulses have very fast rise and fall times (5 nanoseconds) with a pulse width of 30 nanoseconds. As a result I obtained the classical (Sinx/x)^2 power...