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    초록·키워드

    It is necessary to minimize the effect of parasitic poles of operational amplifiers(op amps) in active filter design using the single pole model of op amps. This paper describes a new realization of active-R highpass filter which has minimized its effect by adjusting passive element values. A second order highpass filter is evaluated both theoretically and numerically. function, and that the negative factors can be canceled by adjusting passive element values of the circuit. Applying the technique to a second order highpass filter obtained from this configuration, it is confirmed that the effect of the parasitic poles is canceled well. It is also obtained from sensitivity analysis that a proposed circuit in this paper has low sensitivity to the parasitic poles.

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      UCI(KEPA) : I410-ECN-0101-2009-569-013186613