Realization of current mode all-pass networks using a current conveyor

Two novel networks are proposed for realizing a current-mode all-pass filter with high output impedance, using a single current conveyor (CC II) and four passive elements. The networks can be used in cascade without requiring an impedance-matching device. Even with a nonideal CC II, the networks can realize all-pass networks with slightly altered values of the gain and the center frequency.<
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