Abstract
This article presents a configuration that can simulate both a resistor in series with a frequency-dependent negative-resistance (R-D) and a resistor in series with a capacitor (R-C), with a different selection of passive elements. The proposed circuit employs only two current-controlled-current-feedback- amplifiers (CC-CFAs) and grounded passive elements. This configuration does not require passive element matching, and the simulated equivalent element values can be tuned electronically by applying a biasing current to the CC-CFAs. To demonstrate the application of the proposed grounded series R-D impedance simulator, it is applied to a second-order notch filter and a fifth-order elliptic lowpass filter, whereas the series R-C impedance simulator is applied to a secondorder resonance circuit to find the band-pass response of the input current. Our theoretical analysis is confirmed by the results of a PSPICE simulation.
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