Large-Signal Linearity and High-Frequency Noise of Passivated AlGaN/GaN High-Electron Mobility Transistors

Autor: Yu-Shyan Lin, Shin-Fu Lin
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Micromachines, Vol 12, Iss 1, p 7 (2020)
Druh dokumentu: article
ISSN: 2072-666X
DOI: 10.3390/mi12010007
Popis: This study proposes AlGaN/GaN/silicon high-electron mobility transistors (HEMTs) grown by a metallorganic chemical vapor deposition (MOCVD) system. The large-signal linearity and high-frequency noise of HEMTs without and with different passivation layers are compared. The experimental data show that the addition of a TiO2 passivation layer to undoped AlGaN/GaN HEMT’s increases the value of the third-order intercept point (OIP3) by up to 70% at 2.4 GHz. Furthermore, the minimum noise figure (NFmin) of the HEMT with TiO2 passivation is significantly reduced.
Databáze: Directory of Open Access Journals