Two-dimensional analysis of cutoff frequencies of GaAs MESFETs with various substrate conditions

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Cutoff frequencies of GaAs MESFETs are simulated by using a model that considers impurity compensation by deep levels in the semi-insulating (SI) substrate. For a higher acceptor-density SI substrate, an achievable cutoff frequency becomes higher because the substrate current becomes smaller. Effects of introducing a p-buffer layer are also studied in terms of dependencies on p-layer thickness and its doping density.

Original languageEnglish
Pages (from-to)230-237
Number of pages8
JournalInternational Journal of Microwave and Millimeter-Wave Computer-Aided Engineering
Issue number3
Publication statusPublished - 1993 Jul


ASJC Scopus subject areas

  • Engineering(all)

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