1. Department Electronics &2. Telecommunication Engineering , Jadavpur University , Kolkata, India robnon@ieee.org;4. Telecommunication Engineering , Jadavpur University , Kolkata, India;5. Women's Polytechnic , Kolkata, India
Abstract:
A new realisation scheme for third order lowpass Butterworth filter function (BFF) using two CFA devices and few RC components is presented. The design equations utilise the transadmittance elements of the devices. The maximally flat response at select frequencies in the range 5 MHz ≤ fo ≤ 30 MHz had been verified with PSPICE macromodel simulation and by hardware circuit implementation using the AD-844 device. The active sensitivities are quite low. The simulation result and the measured responses are included for fo = 5.1 MHz and 22.2 MHz.