Dipartimento d'Ingegneria

Thursday, 20 December 2012 11:20

High Reliability MEMS redundancy Switch

highreliability3

Reliability is a major issue for any satellite since it is almost impossible to envisage any repair work during the full mission lifetime e.g. 15 years for today’s telecommunications satellites. Redundancy is implemented in order to reduce the failure rate of equipment.For this purpose, high reliability switches is of greatest importance for RF equipment incorporating redundancy schemes. Electrostatic RF MEMS show great potentialities for space; still their reliability is hampered by different failure mechanisms. Dielectric charging has been identified as the main failure mechanism for redundancy switches, where the switches are required to be kept activated (i.e. polarized with continuous voltage) for long time.
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