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We report on small, low-ohmic RF MEMS switches with a circular membrane actuator design. A low temperature process is used to manufacture both the MEMS switch as well as its hermetic, thin-film package resulting in a very small footprint device. The hermetic seal of the package significantly increases the switch lifetime and reliability. The switches demonstrate good RF performance and high switching...
In this paper, the reliability requirements, thermal behaviour and failure mechanisms of solidly mounted Bulk Acoustic Wave (BAW) filters are studied. High power RF stress measurements are presented where the evolution of the surface damage of the BAW filters as a function of stress time is analysed by optical height profiling. Two different metal stacks were used. The main failure mechanism for BAW...
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