Accuracy improvement of small-signal model minimising parameter sensitivity based on de-embedded sub-model method at W-band

Tung The Lam Nguyen, Sam Dong Kim

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A highly reliable small-signal parameter extraction method for parasitic elements of the 0.1-μm GaAs metamorphic high electron mobility transistors is presented. De-embedding scheme for the coplanar waveguide (CPW) feeding structure is utilised in this method in a frequency range of 0.5-110 GHz with an enhancement approach to the correction of source inductance parameter sensitivity derived from oscillating measurements. The parasitic extrinsic capacitances are determined by modelling an Π equivalent circuit including the interaction between the sub-model and the CPW feedings. From this method, the authors achieved the most accurate parameter prediction with an effective fitting error of 10.83% among the small-signal models reported to date.

Original languageEnglish
Pages (from-to)134-140
Number of pages7
JournalIET Microwaves, Antennas and Propagation
Volume10
Issue number2
DOIs
StatePublished - 29 Jan 2016

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