Above Ic Micro-Power Generators for RF-Mems
Abstract
This work presents recent advances in the development and the integration of an electrochemical (chemicalelectrical energy conversion) micro power generator used as a high voltage energy source for RF-MEMS powering. Autonomous MEMS require similarly miniaturized power sources. Up to day, solid state thin film batteries are realized with mechanical masks. This method doesn't allow dimensions below a few mm2 active area, and besides the whole process flow is done under controlled atmosphere so as to ensure materials chemical stability (mainly lithiated materials). Within this context, Microelectronics micro-fabrication procedures (photolithography, Reactive Ion Etching...) are used to reach both miniaturisation (100x100 μm2 targeted unit cell active area) and Above IC technological compatibility. All process steps developed here are realized in clean room environment.