Title :
Transformer feedback based CMOS amplifiers
Author :
Bhagavatula, Venumadhav ; Rudell, Jacques C.
Author_Institution :
Dept. of Electr. Eng., Univ. of Washington, Seattle, WA, USA
Abstract :
Analysis of several impedance matching networks used in both common source and common gate amplifiers with reactive feedback are presented. Five fundamental topologies for transformer feedback based closed-loop amplifiers are identified and their relative merits with respect to silicon area and power consumption are discussed. In addition, a design methodology to achieve both narrow and wideband matching is derived. A 5 GHz wideband amplifier designed in a TSMC 90-nm CMOS process is used to benchmark the different schemes. The calculated input impedance is compared with simulation results.
Keywords :
CMOS analogue integrated circuits; impedance matching; integrated circuit design; low-power electronics; microwave amplifiers; wideband amplifiers; CMOS amplifier; TSMC CMOS process; closed-loop amplifier; common gate amplifier; common source amplifier; frequency 5 GHz; impedance matching network; narrow matching; power consumption; reactive feedback; silicon area; size 90 nm; transformer feedback; wideband amplifier design; wideband matching; CMOS integrated circuits; Impedance matching; Integrated circuit modeling; Logic gates; Topology; Wideband;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6271773
