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Tunable MEMS volume capacitors for high voltage applications

✍ Scribed by J.A. Etxeberria; F.J. Gracia

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
573 KB
Volume
84
Category
Article
ISSN
0167-9317

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✦ Synopsis

This paper reports the design, fabrication and electrical characterization of MEMS tunable volume capacitors to be used as voltage controlled devices in tuning telecommunication circuits. A novel fabrication process to obtain parallel plate metallic capacitors based on deep reactive ion etching (DRIE) bulk micromachining techniques have been developed. Devices of three different electrode areas have been fabricated and designed and the influence of the area in the main characteristics of the MEMS capacitors established. The interaction of the DC tuning voltage and AC signal and their influence on the tuning behavior has been analyzed and the top operation limits evaluated. The obtained results make this kind of MEMS tunable metallic capacitors appropriate candidates for its use in the new power MEMS scenario.

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