On the elimination of constant-input limit cycles in digital filters
Paulo S. R. Diniz, A. Antoniou · IEEE Transactions on Circuits and Systems · 1984
A theorem is proved which establishes sufficient conditions that will ensure freedom from constant-input limit cycles in a general digital-filter structure in which zero-input limit cycles can be eliminated. The theorem is then applied to a specific digital biquad which realizes simultaneously all the standard second-order transfer functions.