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Electrothermal X-Parameters for Dynamic Modeling of RF and Microwave Power Transistors

Gillespie, Sean J., Root, David E., Marcu, Mihai and Aaen, Peter (2018) Electrothermal X-Parameters for Dynamic Modeling of RF and Microwave Power Transistors In: 21st European Microwave Week (EuMW 2018), 23-28 Sep 2018, Madrid, Spain.

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Abstract

For the first time, this paper presents and validates a novel extension of the X-parameter behavioral modeling paradigm to include dynamic electro-thermal phenomena, a key source of long-term memory affecting transistors. The dynamic thermal X-parameter model (DTXM) adds a novel but straightforward method to implement envelope domain sub-circuit in a feedback loop around a conventional static X-parameter model, enabling the simulation of modulated waveform-dependent dynamic self-heating effects. The extended model is identified from conventional CW or pulsed X-parameter measurements, over a range of ambient temperatures. A re-referencing of the extracted X-parameter data to the junction temperature is performed, based on estimated or a calculated thermal resistance and thermal capacitance. The model can also be generated in the simulation environment starting from a dynamic electro-thermal compact time-domain model. The DTXM accounts for thermallyinduced asymmetry of intermodulation distortion products and temperature hysteresis depending on the signal bandwidth.

Item Type: Conference or Workshop Item (Conference Poster)
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
NameEmailORCID
Gillespie, Sean J.s.gillespie@surrey.ac.uk
Root, David E.
Marcu, Mihai
Aaen, Peterp.aaen@surrey.ac.uk
Date : 29 September 2018
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Copyright Disclaimer : © 2018 the authors.
Uncontrolled Keywords : Behavioural modelling; X-Parameters; Electrothermal device modelling; NVNA
Related URLs :
Depositing User : Clive Harris
Date Deposited : 24 Apr 2018 13:27
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/846299

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