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Type: Conference paper
Title: A design methodology for a very low noise figure common-source LNA
Author: Zhu, Y.
Al-Sarawi, S.
Liebelt, M.
Citation: Smart structures, devices, and systems II : 13-15 December 2004, Sydney, Australia / Said F. Al-Sarawi (ed.), pp. 31-43
Publisher: SPIE
Publisher Place: Bellingham, Washington, USA
Issue Date: 2005
Series/Report no.: Proceedings of SPIE--the International Society for Optical Engineering ; 5649.
ISBN: 0819456098
ISSN: 0277-786X
Conference Name: SPIE International Symposium on Smart Structures, Devices, and Systems II (2004 : Sydney, Australia)
Statement of
Yingbo Zhu, Said F. Al-Sarawi, and Michael Liebelt
Abstract: The design of common source (CS) Low Noise Amplifiers (LNA) for wireless receivers is presented. The design trade-offs between main criteria are discussed. An extra gate-to-source capacitor is added to the input transistor to reduce the transistor dimension while still satisfying the noise matching. The small MOSFET also improves the LNA linearity with comparatively small drain-source current. The extra gate-to-source capacitor is introduced by the bonding-pad parasitic capacitor; hence a negative effect parasitic capacitance is turned into a useful capacitor. The simulated Noise Figure (NF) of two single-ended LNAs using 0.18 µm CMOS process achieve 0.62 dB and 0.92 dB at 2.4 GHz and 5.25 GHz respectively while matching a 50 ohm impedance.
Description: ©2005 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
RMID: 0020051493
DOI: 10.1117/12.580705
Appears in Collections:Environment Institute publications
Electrical and Electronic Engineering publications

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