Tunable RC-active filters using periodically switched conductances
- 1 May 1973
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuit Theory
- Vol. 20 (3) , 294-301
- https://doi.org/10.1109/TCT.1973.1083667
Abstract
The realization of electronically tunable RC-active filters is achieved by the use of periodically switched conductances within the filter. A method of analysis of RC networks containing periodically switched conductances is given, which is based on the impulse response of the network at a capacitance. The use of periodically switched conductances to tune RC-active filters has several practical advantages, such as eliminating the need to carefully match independently adjustable network elements and being able to control a transfer function with one timing waveform. This method of electronically tuning RC-active filters is illustrated by several designs.Keywords
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