Orthonormal ladder filters
- 1 March 1989
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems
- Vol. 36 (3) , 337-343
- https://doi.org/10.1109/31.17579
Abstract
A state-space structure for the realization of arbitrary filter transfer-functions is presented. This structure should prove useful where integrators are the basic building blocks such as in transconductance-C, MOSFET-C, or active-RC filters. The structure is derived from a singly terminated LC ladder and has the characteristics that it is always scaled for optimum dynamic range and its integrator outputs are orthogonal. For this reason, the resulting realizations are called orthonormal ladder filters. Since dynamic range scaling is inherent to the proposed structure, it is felt that this design technique may be most useful in programmable or adaptive filters. The sensitivity and dynamic range properties of an orthonormal ladder filter are shown to be comparable in performance to the equivalent properties obtained from a cascade of biquads.Keywords
This publication has 5 references indexed in Scilit:
- State-space simulation of LC ladder filtersIEEE Transactions on Circuits and Systems, 1987
- Synthesis and analysis of state-space active filters using intermediate transfer functionsIEEE Transactions on Circuits and Systems, 1986
- On the Interaction of Roundoff Noise and Dynamic Range in Digital Filters*Bell System Technical Journal, 1970
- Inductorless filtersElectronics Letters, 1966
- The Synthesis of Minimum Sensitivity NetworksIEEE Transactions on Circuit Theory, 1964