A Nonlinear S-parameters Behavioral Model for RF LNAs
In this paper, the model derivation is thoroughly discussed showing how the effects of intermodulation as well as output power saturation can be included within the S-parameters representation for the block. Furthermore, in order to minimize the calibration effort, the model generics are made such that they map directly to typical LNA specifications. It follows that the model as implemented is not topology specific and can be easily calibrated to serve within top-down or bottom-up verification flows. Finally, the model accuracy is validated against reference transistor level simulations. Results comparison shows good agreement is attained. Keywords Behavioral model, intermodulation, LNA, non-linearity, radio-frequency, S parameters.
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