A new technique is developed for determining analytically a millimeter wave small-signal equivalent circuit model of GaAs pHEMTs from Scattering parameter measurements. In order to obtain a good agreement between model simulations and measurements up to 90 GHz, the conventional intrinsic output conductance is substituted by a voltage controlled current source with a time delay. Consequently, a simple and accurate extraction procedure is proposed for taking into account the introduction of the output conductance time delay.
A New Millimeter Wave Small-Signal Modeling Approach for pHEMTs Accounting for the Output Conductance Time Delay
RAFFO, Antonio;VANNINI, Giorgio
2008
Abstract
A new technique is developed for determining analytically a millimeter wave small-signal equivalent circuit model of GaAs pHEMTs from Scattering parameter measurements. In order to obtain a good agreement between model simulations and measurements up to 90 GHz, the conventional intrinsic output conductance is substituted by a voltage controlled current source with a time delay. Consequently, a simple and accurate extraction procedure is proposed for taking into account the introduction of the output conductance time delay.File in questo prodotto:
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