Multiple independent gate FET ring oscillators with dynamic frequency tuning

Fully depleted SOI multiple independent gate FETs (MIGFETs) provide dynamic control of threshold voltage (Vt). This dynamic Vt capability is applied to ring oscillators for frequency tuning and compensation of voltage variation. The MIGFET ring oscillators were manufactured in an 180nm SOI process that supports both traditional double gate transistors and MIGFETs.