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This paper introduces a simulated grounded inductor (SGI) circuit realization based on two terminal active devices, namely negative impedance converters. The proposed SGI contains a minimum number of passive components when compared to its two terminal active device-based realization counterparts in the literature. It includes a grounded capacitor that is an advantage in integrated circuit process. Nonetheless, a single resistive matching constraint is needed for its realization. SPICE simulations are performed with 0.13 mu m CMOS IBM technology parameters with supply voltages of +/- 0.75 V. Also, an experimental study is included to verify the theory.

In this paper, a new floating analog memristance simulator circuit based on dual-output operational transconductance amplifiers (DO-OTA) and passive elements is proposed. Theoretical derivations are presented which describe the circuit characteristics. DO-OTA active elements in the proposed circuit are realized with CMOS transistors, and PSPICE simulations are performed. Also workability of the circuit is tested experimentally by using commercially available integrated circuits. Theoretical derivations are validated with PSPICE simulation and experimental results. All results show that proposed simulator circuit provides frequency-dependent pinched hysteresis loop and nonvolatility feature. Exciting frequency, minimum and maximum memristance values and memristance range can be adjustable electronically with bias currents by changing the transconductances of DO-OTAs. Simulator circuit has a frequency range of 1 Hz–180 kHz.

WOS: 000300771700002, A novel circuit for the realization of the mutually coupled circuit using three current-controlled current backward transconductance amplifiers (CC-CBTAs) as active components is proposed. The active mutually coupled circuit structures are also called the synthetic transformers. The circuit is derived by using three floating simulated inductors that are connected as the T-type transformer model. The circuit has the following attractive advantages: (i) The values of a primary self-inductance, a secondary self-inductance and a mutual inductance can be independently tuned by the transconductance gain of the CC-CBTAs; (ii) The circuit uses three grounded capacitors that are suitable from the point of integrated circuit implementation; (iii) It uses only three active components; (iv) It has a good sensitivity performance with respect to the tracking errors; (v) Both positive and negative couplings are achieved and the coupling coefficient is not limited by 1 in magnitude; (vi) Symmetrical coupling is achieved without necessitating any matching condition; (vii) The proposed circuit has a floating structure.