A Dual-Band MEMS Reconfigurable Filter for a Multi-Standard Radio Front-End

A new kind of MEMS multi-standard filter has been developed and fabricated on quartz substrate. This device is optimized for dual-band operations in a radio front-end subsystem, switching between two very different standards: DCS1800 at 1.84 GHz with 4% fractional bandwidth (FBW), and WLAN at 5.2 GHz with 17% FBW. The original architecture based on hybrid lumped/distributed elements design and integrating MEMS controlled capacitor banks is first introduced. Hence, the measurement results are presented and discussed showing very good agreement with simulation results and enabling full validation of the principle.