Constant absolute bandwidth UHF tunable filter using RF MEMS

Gérôme Nicolini (1) , Cyril Guines (1) , Damien Passerieux (1) , Pierre Blondy (1) , Gilles Neveu (2) , Marie-Pierre Dussauby (2) , William Rebernak (2) , Michel Giraudo (2)

1 XLIM-MINACOM - MINACOM
2 Thales Communications [Colombes]

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.

Mots clés: Band-pass filters; Bandwidth; Capacitors; Micromechanical devices; Microwave filters; Resonant frequency; Resonator filters

Domaines: Micro et nanotechnologies/Microélectronique

Gérôme Nicolini, Cyril Guines, Damien Passerieux, Pierre Blondy, Gilles Neveu, et al.. Constant absolute bandwidth UHF tunable filter using RF MEMS. Microwave Integrated Circuits Conference (EuMIC), 2012 7th European, Oct 2012, Amsterdam, Netherlands. pp.687 - 690. ⟨hal-00922930⟩