Device Characterization and Modeling of Large-Size GaN HEMTs

Device Characterization and Modeling of Large-Size GaN HEMTs
Author :
Publisher : kassel university press GmbH
Total Pages : 257
Release :
ISBN-10 : 9783862193646
ISBN-13 : 3862193640
Rating : 4/5 (46 Downloads)

Book Synopsis Device Characterization and Modeling of Large-Size GaN HEMTs by : Jaime Alberto Zamudio Flores

Download or read book Device Characterization and Modeling of Large-Size GaN HEMTs written by Jaime Alberto Zamudio Flores and published by kassel university press GmbH. This book was released on 2012-08-21 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a comprehensive modeling strategy for advanced large-size AlGaN/GaN HEMTs. A 22-element equivalent circuit with 12 extrinsic elements, including 6 capacitances, serves as small-signal model and as basis for a large-signal model. ANalysis of such capacitances leads to original equations, employed to form capacitance ratios. BAsic assumptions of existing parameter extractions for 22-element equivalent circuits are perfected: A) Required capacitance ratios are evaluated with device's top-view images. B) Influences of field plates and source air-bridges on these ratios are considered. The large-signal model contains a gate charge's non-quasi-static model and a dispersive-IDS model. THe extrinsic-to-intrinsic voltage transformation needed to calculate non-quasi-static parameters from small-signal parameters is improved with a new description for the measurement's boundary bias points. ALl IDS-model parameters, including time constants of charge-trapping and self-heating, are extracted using pulsed-DC IV and IDS-transient measurements, highlighting the modeling strategy's empirical character.


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