White band saying DC-3GHz ? It will have different inputs for Lo (max 50MHz or so) and Hi. On LO will be simple amplifier/comparator with or without filter. On HI will be an amplifier followed by a RF divider. best, Vasile http://www.itim-cj.ro/~vasile/ On Tue, Apr 21, 2015 at 10:27 PM, Martin K wrote: > How would a good wide-band frequency counter work? > > Would you amplify the signal a whole lot and feed it into a comparator? > Seems noisy. Undesired frequencies would affect the zero crossing. > > I suppose maybe you would be required to bandpass filter around a known > frequency range? > > I think there might be more elaborate ways - maybe some sort of 1-bit > oversampled FFT? But yes, that's getting very elaborate. > > > - > Martin K > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .