Title :
A design flow for inductively degenerated LNAs
Author :
Guermandi, D. ; Franchi, E. ; Gnudi, A.
Author_Institution :
DEIS, Bologna Univ., Italy
Abstract :
A design flow to explore the design parameters space of integrated inductively-degenerated low noise amplifiers (LNA), under the constraint of matched input impedance, is presented. It is based on standard circuit simulation tools and can be easily automated. The method is applied to the design of a 5.5 GHz 0.18 μm CMOS LNA with minimum noise figure (NF) for a fixed bias current. The measured NF of 2.6 dB, with input reflection coefficient lower than -15 dB at 5 mA bias current, shows good agreement with simulations.
Keywords :
CMOS analogue integrated circuits; MMIC amplifiers; impedance matching; integrated circuit design; integrated circuit noise; 0.18 micron; 2.6 dB; 5 mA; 5.5 GHz; CMOS LNA; fixed bias current noise figure; inductively-degenerated low noise amplifiers; input reflection coefficient; integrated LNA design flow; matched input impedance constraints; Analytical models; Circuit simulation; Design optimization; Impedance matching; Inductance; Inductors; Libraries; Low-noise amplifiers; Noise figure; Noise measurement;
Conference_Titel :
Electronics, Circuits and Systems, 2004. ICECS 2004. Proceedings of the 2004 11th IEEE International Conference on
Print_ISBN :
0-7803-8715-5
DOI :
10.1109/ICECS.2004.1399756
