A novel approach in filter designing using a dual feedback operational amplifier

摘要

In this paper we have proposed a new analog filter. It uses a dual feedback op amp in series with an inductor and a resistor. The proposed filter shows a high roll-off and unlike the previous attempts at building a high roll off analog filters, it does not distort the pass band frequencies. A brief comparison has been done, to explain the superiority of the proposed filter compared to the other high roll analog filter existing till now. A mathematical analysis of the filter along with the simulated result has been presented in this paper.