residual cancellation in output filter

[81bas]

Hi!

found the following patent description: http://www.patentstorm.us/patents/6281767.html

Can be interesting to try it or at least to simulate it...

Any thoughts about it?

[microsim444]

Originally Posted by 81bas

Hi!

found the following patent description: Reconstruction filter for eliminating the switching residue in a switched system - US Patent 6281767 Abstract

Can be interesting to try it or at least to simulate it...

Any thoughts about it?

Thanks for sharing..........

[darkfenriz]

Will work only with clocked designs, possibly with little or no post filter feedback.
And to get it more effective you could use several resonant tanks to cancel carrier and carrier harmonics (both odd and even), at paper or simulation this should work, in practice who knows...