On-chip monolithic filters for receiver interference suppression using bond-wire inductors

摘要

Two passive LC filters are fabricated in a 0.18 /spl mu/m BiCMOS process for interference suppression in WCDMA applications. A single-pole filter achieves an insertion loss of 1dB at 2.14GHz and suppression of 12dB at 1.95GHz, while the three-pole filter has insertion loss of 8dB at 2.3GHz and provides a suppression of 23dB at 2.1GHz. Both filters are implemented using MIM capacitors and bond wire inductors.