DocumentCode :
2165721
Title :
A fully integrated LNA for 3-5 GHz UWB wireless applications in 0.18-μm CMOS technology
Author :
Duan, Jihai ; Wang, Zhigong ; Li, Zhiqun
Author_Institution :
Sch. of Integrated Circuits, Southeast Univ., Nanjing
fYear :
2008
fDate :
2-5 Nov. 2008
Firstpage :
1274
Lastpage :
1277
Abstract :
In this paper, a fully integrated low noise amplifier (LNA) employing a cascode topology and an RC feedback network is proposed for an ultra-wideband (UWB) wireless system in a 0.18-mum RF CMOS technology. By using two single-stage cascode topologies, the function of both a single-end input and differential output is achieved. The wideband input impedance and noise matching is conducted by employing an RC feedback network, a degenerating inductor (Ls) and a gate one (Lg). The simulation results show that the average power gain (S21 or S31) is about 11 dB and the input return loss (S11) is less than -10 dB over the whole frequency range of 3 to 5 GHz. In addition, the noise figure (NF) is from 2.5 to 3.5 dB over 3-5 GHz while consuming 49 mW under a 1.8 V single supply voltage.
Keywords :
CMOS integrated circuits; low noise amplifiers; ultra wideband communication; RC feedback network; RF CMOS technology; UWB wireless applications; cascode topology; frequency 3 GHz to 5 GHz; fully integrated low noise amplifier; noise figure 2.5 dB to 3.5 dB; power 49 mW; size 0.18 mum; voltage 1.8 V; Broadband amplifiers; CMOS technology; Feedback; Impedance; Inductors; Low-noise amplifiers; Network topology; Radio frequency; Radiofrequency amplifiers; Ultra wideband technology;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas, Propagation and EM Theory, 2008. ISAPE 2008. 8th International Symposium on
Conference_Location :
Kunming
Print_ISBN :
978-1-4244-2192-3
Electronic_ISBN :
978-1-4244-2193-0
Type :
conf
DOI :
10.1109/ISAPE.2008.4735457
Filename :
4735457
Link To Document :
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