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Filters are significant RF and microwave components. Lumped element filters are impractical for compact designs of wireless communications equipment, especially hand-held devices. Distributed element filter design offers a much smaller area and profile. With the advent of advanced substrate materials offering high dielectric constants with low loss, the size reduction with preserved efficiency is...
This paper demonstrates a tunable RF filter design that can ldquoself-repairrdquo when the MEMS switch used for tuning the filter fails. The filter is designed so that symmetry exists at the segment where MEMS switch is placed. Redundant structures and MEMS switch are then added to the other side of the symmetry. These redundant structures will be used when the original MEMS switch fails. Minor design...
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