4- and 13-GHz tuned amplifiers implemented in a 0.1-μm CMOS technology on SOI, SOS, and bulk substrates

Four- and 13-GHz tuned amplifiers have been implemented in a partially scaled 0.1-μm CMOS technology on bulk, silicon-on-insulator (SOI), and silicon-on-sapphire (SOS) substrates. The 4-GHz bulk. SOI. and SOS amplifiers exhibit forward gains of 14, 11, and 12.5 dB and Fmin's of 4.5 (bulk) and 3.5 dB (SOS). The 13-GHz SOS and SOI amplifiers exhibit gains of 15 and 5.3 dB and Fmin's of 4.9 and 7.8 dB. The 4-GHz bulk amplifier has the highest resonant frequency among reported bulk CMOS amplifiers, while the 13-GHz SOS and SOI amplifiers are the first in a CMOS technology to have tuned frequencies greater than 10 GHz. These and other measurement results suggest that it may be possible Io implement 20-GHz tuned amplifiers in a fully scaled 0.1-μn CMOS process.