Wide Band CMOS Low-Noise Amplifier Exploiting Noise Cancellation

Bruccoleri, Federico and Klumperink, Eric A.M. and Nauta, Bram (2002) Wide Band CMOS Low-Noise Amplifier Exploiting Noise Cancellation. In: ProRISC 2002, 13th Workshop on Circuits, Systems and Signal Processing, 28-29 November 2002, Veldhoven, the Netherlands.

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Abstract:	Well-known elementary wide band amplifiers suffer from a fundamental trade-off between noise factor and source impedance matching, which limits their noise figure (NF) to values typically above 3dB. Negative feedback can be employed to break this trade-off, thus allowing lower noise figures, however, at the price of potential instability. In contrast, this paper describes a novel feed-forward noise cancelling technique, which allows for design wide band Low Noise Ampliers (LNAs) with sub 3dB noise figure, without suffering from instability issues. This technique is also robust and easy to use. Measurements on a wide band LNA realised in 0.25μm standard CMOS show NF values below 2.4dB over more than one decade of bandwidth and below 2dB over more than two octaves.
Item Type:	Conference or Workshop Item
Faculty:	Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:	Integrated Circuit Design (ICD)
Link to this item:	http://purl.utwente.nl/publications/67439
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