In message <4E7507C3.1060402@...>, dated Sat, 17 Sep 2011, Ganesan <dg1@...> writes:
Just a thought .. You could build a cascade of bandpass filters at the third harmonic
If intermodulation products are negligible, the bandwidth can be equal to the fundamental frequency, so the filter need not be complex. The other way is to put a notch filter at the 3rd harmonic frequency in the feedback loop of an op-amp.
--
OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
When I point to a star, please look at the star, not my finger. The star will
be more interesting.
