Resonator-based digital filters
Gábor Péceli · IEEE Transactions on Circuits and Systems · 1989
A digital filter structure that is structurally passive and can suppress all zero-input limit cycles, and if rounding is applied provides minimum roundoff noise is presented. These properties are due to the fact that this structure generates its output as a linear combination of orthogonal signal components, thus internally implementing an orthogonal realization of a lossless transfer function.>