A new method for pHEMT noise-parameter determination based on 50-Ω noise measurement system

  • Jianjun Gao*
  • , Choi Look Law
  • , Hong Wang
  • , Sheel Aditya
  • , Georg Boeck
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

A new method for determining the four noise parameters of pseudomorphic high electron-mobility transistors (pHEMT) based on 50-Ω noise measurement system without a microwave tuner is presented. The noise parameters are determined based on the noise correlation matrix technique by fitting the measured noise figure of the active device. On-wafer experimental verification up to 26 GHz is presented and a comparison with a tuner-based method is given. The scaling rules for noise parameters have also been determined. Good agreement is obtained between simulated and measured results for 2 × 20 μm, 2 × 40 μm, and 2 × 60 μm gatewidth (number of gate fingers × unit gatewidth) 0.25-μm double-heterojunction δ-doped pHEMTs.

Original languageEnglish
Pages (from-to)2079-2089
Number of pages11
JournalIEEE Transactions on Microwave Theory and Techniques
Volume51
Issue number10
DOIs
StatePublished - Oct 2003
Externally publishedYes

Keywords

  • Correlation noise matrix
  • Noise measurement
  • Noise parameter

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