Jitter spectral extraction for multi-gigahertz signal

We propose a method for extracting the spectral information of a multigigahertz jittery signal. This method may utilize existing on-chip single-shot period measurement techniques to measure the multigigahertz signal periods for spectral analysis. This method does not require an external sampling clock, nor any additional measurement beyond existing techniques. Experimental results show that this analysis method can accurately estimate the amount and frequencies of periodic and random jitter of a multigigahertz signal.