Most of the electronic products are facing with the problem of energy saving. The mobile electronic products and space applications in particular require low voltage and low power integrated circuits. The development for BULK Si,even PD- SOI CMOS,in these aspects,encounters a great challenge. FD- SOI,namely full depletion silicon on insulator,is a very good alternative. When devices further scale down to the nanometer level,the advantage of energy saving of FD- SOI is more prominent.This paper introduces ad...