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This paper discusses an approach taken to extract a virtual X-parameter (vX-parameter) model for a 500W L-Band internally matched device (IMD). X-parameters are essentially an open form of nonlinear data format that can be directly extracted from an NVNA and can be used in a circuit simulator as non-linear models. However, for very high power devices, the NVNA and its required peripheral components...
Nonlinearity is becoming increasingly important to IC technologies. From the PHD formalism, X-parameter models provide an accurate frequency-domain method under large-signal operating points to characterize their nonlinear behaviors. In this work, X-parameter models are investigated to handle time-domain pulse signals which is critical to IC signal integrity but was not studied before. Two representative...
In this paper a new behavioral model that describes energy harvester circuits for use in RFID systems will be presented. The use of X parameters, recently proposed for Power Amplifier characterization, will be expanded to RFID circuits. It is expected that this type of model is able to improve the design and optimization of energy harvester circuits, and give a step forward in terms of RFID simulation...
In this work, the polyharmonic distortion (PHD) model is used to analyze the behavior of high-speed nonlinear links. The model assumes the validity of the harmonic superposition principle for high-speed I/O links. From the PHD formalism, a frequency-domain X-parameter matrix formulation is derived. The formulation accommodates both port and harmonic dependence of the signals. Relationships are derived...
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