In this paper, a new mixed mode full-wave rectifier which consists of a current differencing transconductance amplifier (CDTA), resistor and two complementary MOS transistor is presented. The proposed circuit is called as mixed mode because it can be used as current-, voltage-, transimpedance- and transconductance-mode rectifier depending on how the resistor is connected to the input or output of the circuit. The presented circuit has an appropriate zero crossing performance, linearity, low component count, and can be adapted to modern IC technologies. It is also suitable for monolithic integrated implementation. LTSPICE simulations with 0.18 μm CMOS model obtained through TMSC are included to verify the workability of the proposed circuit. We also performed noise and Monte Carlo analyses. Various simulation results are presented to show the effectiveness of the proposed circuit.

In this paper, a new ultralow voltage and ultralow power voltage differencing current conveyor based on dynamic threshold voltage MOS transistors was proposed. The simulations were performed by using LTSpice Program with TSMC CMOS 0.18 µm process parameters. A new notch filter configuration was also presented as an application for the proposed voltage differencing current conveyor. The power consumption of proposed voltage differencing current conveyor was simply 12.42 nW at symmetric ±0.2 V supply voltage. The simulation results were found in close agreement with the theoretical results.

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Active elements are critical in implementing active filters, oscillators, rectifiers, and signal processing circuits. We observe that several active circuits have been proposed in the literature. In this study, we have proposed four inductance simulators that employ only one active circuit current feedback operational amplifier and three or four passive components. The first and fourth topologies are designed for series lossy inductance, whereas the second and third topologies are designed for lossless negative inductance simulators. A passive RLC filter is used to demonstrate the effectiveness of the proposed inductance simulators. The simulations performed with the LTSpice program and the results agree with the theoretical analysis.

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