A Multistandard RF Receiver Front-End Using a Reconfigurable FBAR Filter

This article presents a dual-standard RF receiver front-end (RFFE). It consists of a reconfigurable FBAR filter using MEMS switches, a dual-standard low-noise amplifier (LNA), an active single-to-differential converter (SDC) and I/Q down conversion mixers. The proposed RFFE is targeted to W-LAN 802.11b/g (2.4-2.48 GHz) and W-CDMA-FDD (2.11-2.17 GHz) wireless standards. The active blocks use the 0.25-μm SiGe:C BiCMOS process from STMicroelectronics. The feasibility of BiCMOS compatible integrated tunable FBAR filter in BAW technology enables a very compact solution through module integration