- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 14 Issue: 3
- State-Space Synthesis of Current-Mode First-Order Log-Domain Filters
State-Space Synthesis of Current-Mode First-Order Log-Domain Filters
Authors : Ali Kirçay, Uğur Çam
Pages : 399-416
View : 5 | Download : 2
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :This paper proposes current-mode first-order log-domain filters, which are systematically derived using the state-space synthesis procedure. First-order low-pass, high-pass, and all-pass responses are obtained with different circuit types. The filter circuits have very simple structures, since they use only bipolar junction transistors (BJTs) and a grounded capacitor. They can be electronically tuned by changing an external current. The filters have a greater bandwidth due to inherently current-mode and log-domain operation. PSPICE simulations are given to confirm the theoretical analysis.Keywords : Log-domain filters, current-mode circuits, state-space synthesis