Synthetic Grounded Lossy Inductance Simulators Using Single VDIBA

ABSTRACT This work describes two circuit realizations for actively variable simulated lossy inductors (series R–L type and parallel R–L type). Both of the described inductors are simple and resistor-less structures, since they contains only a single active device called voltage differencing inverting buffered amplifier (VDIBA), one grounded capacitor, and one NMOS transistor as a voltage-controlled resistor. The simulated equivalent resistances and inductances of the proposed synthetic lossy inductors can be tuned electronically. The non-ideal transfer gain and the parasitic impedances existing at the VDIBA terminals are taken into account. Simulations with TSMC 0.25-µm CMOS technology are also provided, which demonstrate the utility as well as the workability of the proposed simulators.

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