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A CMOS current-mode band-pass filter with small chip area

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3 Author(s)
Maruyama, Y. ; Tokyo Univ. of Sci., Chiba, Japan ; Hyogo, A. ; Sekine, K.

In this paper, we propose a CMOS current-mode band-pass filter with small chip area. Q (quality factor) of the proposed filter can be mostly determined by the ratio of the MOSFET transconductances in a Q-setting part, not by the ratio of the values of two capacitance similar to the conventional band-pass filter. Therefore, the proposed filter does not need large capacitance that occupies large area on an IC chip, being different from the conventional one. The proposed filter needs smaller area than the conventional one under the condition of Q > 2. The proposed circuit is simulated by SPICE to confirm its characteristics.

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ASIC, 2002. Proceedings. 2002 IEEE Asia-Pacific Conference on

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