Design and analysis of differential floating inductor for filter

This paper presents a technique for circuit implementation of active inductor, based on the use of Complementary Metal Oxide Semiconductor (CMOS) technology as an active element and current source. The spiral inductor occupies a large chip size and is difficult to obtain a high value of cut off frequency. The proposed active inductor is used for implementing a low pass filter with high cut off frequency. The resulting inductance can be electronically tuned by varying the circuit current accordingly. The simulation has been carried out on Tanner EDA tool 13.0 on 0.5 μm technology.