Study of wide adjustable active inductor circuits: Design approaches and reconfiguration methods

This paper provides a comprehensive review of reconfigurable active inductor circuit topologies. Three reported architectures with different reconfiguration techniques have been studied in order to properly select adequate solution for designing wide adjustable active inductor. The study of the different topologies is revealed from the point of view of simplicity of structure, frequency tuning and quality factor, and power consumption. A wide tuning range active inductor model implemented in 0.13 μm CMOS has been suggested and compared to other exiting topologies in terms of performances parameters.