New current-mode biquad filter

A new current conveyor-(CC-)based active biquadratic filter configuration is proposed. The proposed structure offers the following advantageous features in contrast to the previously known CC-based current mode filters: (i) the realization of all the five generic filter functions (namely, low-pass, band-pass, high-pass, notch and all-pass) from the same configuration without requiring critical matching conditions/cancellation constraints; (ii) use of only two grounded capacitors; (iii) availability of non-interacting tunability of the parameters of the realized filters through grounded resistors; (iv) employment of all grounded RC elements; (v) easy conversion into a voltage mode biquad; and (vi) suitability for IC implementation. The workability of the proposed structure has been demonstrated by the results of SPICE simulations based upon translinear CC implementations.