A general weak nonlinearity model for LNAs


Cheng, Wei and Annema, Anne Johan and Croon, Jeroen A. and Klaassen, Dirk B.M. and Nauta, Bram (2008) A general weak nonlinearity model for LNAs. In: IEEE Custom Integrated Circuits Conference, CICC 2008, 21-24 September 2008, San Jose, CA, USA (pp. pp. 221-224).

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Abstract:This paper presents a general weak nonlinearity model that can be used to model, analyze and describe the distortion behavior of various low noise amplifier topologies in both narrowband and wideband applications. Represented by compact closed-form expressions our model can be easily utilized by both circuit designers and LNA design automation algorithms.
Simulations for three LNA topologies at different operating conditions show that the model describes IM components with an error lower than 0.1% and a one order of magnitude faster response time. The model also indicates that for narrowband IM2@w1-w2 all the nonlinear capacitances can be neglected while for narrowband IM3 the nonlinear capacitances at the drainterminal can be neglected.
Item Type:Conference or Workshop Item
Copyright:© 2008 IEEE
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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Link to this item:http://purl.utwente.nl/publications/65345
Official URL:https://doi.org/10.1109/CICC.2008.4672063
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