DocumentCode :
3307594
Title :
Noise and linearity optimization methods for a 1.9-GHz low noise amplifier
Author :
Guo, Wei ; Huang, Daquan
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
fYear :
2002
fDate :
17-19 Aug. 2002
Firstpage :
923
Lastpage :
927
Abstract :
Noise and linearity performances are critical characteristics for radio frequency integrated circuits (RFICs), especially for low noise amplifiers (LNAs). In this paper, a detailed analysis of noise and linearity for the cascode architecture, a widely used circuit structure in LNA designs, is presented. The noise and the linearity improvement techniques for cascode structures are also developed and have been proven by computer simulating experiments. Both the theoretical analysis and the simulation results show that, for LNAs with the cascode structure, the first MOSFET dominates the noise performances of the LNA, while the second MOSFET contributes more to the linearities. A conclusion is thus obtained that the first and second MOSFET of the LNA can be designed to optimize the noise performance and the linearity performance separately, without trade-offs. A 1.9 GHz, CMOS LNA simulation results are also given as an application of the developed theory.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; integrated circuit noise; 1.9 GHz; CMOS low noise amplifier; MOSFET; cascode architecture; computer simulation; linearity optimization; noise optimization; radiofrequency integrated circuit; Circuit simulation; Computational modeling; Computer architecture; Integrated circuit noise; Linearity; Low-noise amplifiers; MOSFET circuits; Optimization methods; Radiofrequency amplifiers; Radiofrequency integrated circuits;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on
Print_ISBN :
0-7803-7486-X
Type :
conf
DOI :
10.1109/ICMMT.2002.1187853
Filename :
1187853
Link To Document :
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