G. Nicolini, C. Guines, D. Passerieux, P. Blondy, G. Neveu, M. Dussauby, W. Rebernak, M. Giraudo
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Constant absolute bandwidth UHF tunable filter using RF MEMS
This paper presents the design and the performances of a tunable UHF filter that uses MEMS capacitors arrays. Central frequency of the filter varies from 278 to 385 MHz and can be adjusted by actuating a desired number of MEMS. Thanks to a specific topology and well-chosen input and output tank circuits, the absolute bandwidth varies from 13 to 14 MHz and can be considered as constant.
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