An analysis of state-variable filters and development of modified state-variable filters.

摘要

This study extends the idea and the technique of realizing 2ⁿᵈ-order state variable filters to the realization of single block nᵗʰ-order state variable filters and introduces a modified realization with different design procedures. The effects of gain-bandwidth on the performance of state variable filter realizations with respect to properties, such as, magnitude and phase characteristics and the actual pole locations are investigated and discussed. Various methods of compensation for these effects are also addressed.