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A universal current-mode 2nd-order filter employing two ZC-CITA (Z-copy current inverter transconductance amplifier) active elements and two grounded capacitors is proposed. The filter has one low-impedance current input and several high-impedance current outputs which are easy to combine to yield all basic types of transfer functions. The active element is implemented on the basis of commercial integrated circuits. The filter is manufactured and the results measured are compared with theoretical responses.