Abstract
In this paper, by introducing a current-controlled current amplifier with multi-outputs (MO-CCCA), two new multi-input and single-output (MISO) universal filtering circuits are proposed. Each circuit just contains two second-generation current conveyors with multiple outputs (MOCCIIs), one MO-CCCA and four grounded RC elements. They can realize low-pass, band-pass, high-pass, band-stop and all-pass filtering outputs. The characteristic parameters natural frequency ( ω 0 ) and quality factor ( Q ) can be tuned independently by bias current of MO-CCCA. Compared to other similar circuits, the circuits in this paper have simpler structures and independent tuning characteristics of ω 0 and Q. Moreover, a filter with a high Q can be obtained by adjusting the ratio of MO-CCCA's bias currents.
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