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An accurate parasitic parameters extraction method based on FW ‐ EM for A l G a N / G a N HEMT up to 110 GH z
Author(s) -
Jia Yonghao,
Xu Yuehang,
Xu Ruimin,
Li Yanrong
Publication year - 2017
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2270
Subject(s) - high electron mobility transistor , capacitance , parasitic capacitance , transistor , equivalent circuit , materials science , small signal model , optoelectronics , transmission line , electrode , analytical chemistry (journal) , voltage , chemistry , electrical engineering , chromatography , engineering
In this paper, an accurate parasitic parameters extraction method based on full wave electromagnetic for 0.1 μm GaN high electron mobility transistors (HEMTs) small‐signal equivalent circuit up to 110 GHz is presented. To describe the distribution effects of HEMTs electrodes at extremely high frequency, a 2‐stage distributed transmission line equivalent circuit model is also presented. To minimize the distribution effects, a shorter gate‐width device, called partial transistor model, is used to extract the second stage ( N = 2) parasitic capacitance before extracting the first stage ( N = 1) parameters. An AlGaN/GaN HEMT with gate length of 0.1 μm is used for validation, and the experimental results show that good agreement has been achieved between measured and simulated scattering (S) parameters up to 110 GHz.