Abstract
Two third-order RC-active filter sections with finite transmission zeros, derived from two commonly used single-amplifier biquads, are examined, and a simple iterative procedure for their design is described, which preserves the low-sensitivity performances of the embedded biquads. Next, the third-order notch section proposed by Boctor is considered and a criterion for its low-sensitivity design is given. Finally, the above mentioned sections together with that recently proposed by Rollett are compared from a sensitivity point of view.
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