Electronically tunable active ebook free download pdf
A new electronically tunable universal current- mode (CM) filter structure employing two CCCIIs, two OTAs and only grounded capacitors are presented. Itís compatible with VLSI technology since no resistance is employed in the circuit. This versatile filter can simultaneously realize five basic transfer functions from the same configuration. It still maintains the following advantage: High-order filter structure can be easily derived from the proposed filter structure. The parameter ω0 can be tuned by changing component manually without effect to the Q. The simulation results have been carried out by Pspice.