Patent ID: 7382825

Claim:
A method for s-parameter capture, comprising: coherent undersampling, of a first data signal received by a receiver circuit with periodic content, in order to fill a two dimensional histogram representation, wherein an undersampler, for sampling the data signal, is part of an integrated circuit and the receiver circuit is part of the same physically contiguous integrated circuit; and wherein the periodic content is determined by selecting a pattern that maximizes the minimum power, of a frequency domain representation of the pattern across a spectrum of interest; approximating the first data signal as a first function of time, from the two dimensional histogram representation, by finding a mean value for the received data signal at each time location of the two dimensional histogram; determining a first frequency domain representation for the first function of time; determining a second frequency domain representation for the first data signal as transmitted to the receiver circuit; and dividing the first frequency domain representation by the second frequency domain representation.