MIXED TECHNOLOGY MEMS/SIGE BICMOS DIGITIZING ANALOG FRONT END WITH DIRECT RF SAMPLING

摘要

A digitizing analog front end (DAFE) (50) using mixed technology on a singlesubstrate is described. SiGe BiCMOS technology is implemented for thesemiconductor components, which include a low noise amplifier (64) and ananalog-to-digital converter (68). Micro Electro Mechanical System (MEMS)switches are used to change the filtering characteristics of several filters,including an anti-aliasing filter (66) and a pre-select and anti-jammingfilter (62).