And tuned it so it works only in the linear region, which means it oscillations between 720-840 mV, and outputs 3.6-4.4 GHz. In order to calculate the SQNR, we need the ABW. How is it possible to find the analog bandwidth of the Vco?
I've tried taking the output of the ring oscillator and using a fourier transform of it, and we get a series of pulses at different amplitudes from 25Mhz to 675 Mhz. Do I need to take the two 3dB values from here?