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