Abstract: In this paper we try to design and implement an MCU based Tunable Band pass filters. The design of these filters is presented along with the simulations. In Tunable filters the general 2nd order op amp filter is tuned via a variable resistor/capacitor components using a pre-programmed MC U through a PC serial port .The design of the filters is done in TI filter Pro, the complete circuit is designed using done using Proteus 8 professional, the MCU/LCD code is written in Kiel U vision 4, simulations are obtained in Proteus 8 and MCU is burned using ISP prog.
Keywords: Tunable, filters, frequency, resistor array, centre frequency, band pass, serial port, MCU, Hyper Terminal, filtering.
Title: A Novel Circuit for Digital Tuning of Bandpass Filters and its Analysis Using MCU
Author: Nadeem Tariq Beigh
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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