Abstract
AbstractA new class of lowpass rational transfer functions is defined, with equal‐ripple behaviour both in the passband and in the stopband. The proposed functions have a multiple real pole, which allows the realization of lowpass RC‐active filters by cascading more (than one) 3rd‐order blocks.These new functions, called multiple real‐pole equal‐ripple rational (MRPER), improve the attenuation performance with respect to a classical solution employing the same number of 2nd‐order blocks and hence may allow a reduction in the required number of active elements and, eventually, in power consumption and in noise‐to‐signal ratio. However, even if the number of active blocks cannot be reduced, the better attenuation performance, which results, allows component tolerances to relax.
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