Temperature-Dependent DC and Small-Signal Analysis of AlGaAs/InGaAs pHEMT for High-Frequency Applications

被引:28
作者
Alim, Mohammad Abdul [1 ]
Rezazadeh, Ali A. [2 ]
机构
[1] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
[2] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
关键词
DC and equivalent circuit parameters (ECPs); GaAs pseudomorphic high-electron mobility transistor (pHEMT); on-wafer measurement; temperature coefficient (TC); ELECTRON-MOBILITY TRANSISTOR; GAAS PHEMTS; HEMTS; PERFORMANCE; PARAMETERS; BREAKDOWN;
D O I
10.1109/TED.2016.2517934
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Temperature-dependent dc and small-signal analysis have been carried out on 0.5 mu m x 200-mu m AlGaAs/InGaAs pseudomorphic high-electron mobility transistor over the temperature range from -40 degrees C to 150 degrees C by on-wafer S-parameter measurements up to 50 GHz. The thermal behavior of dc and equivalent circuit parameters along with their temperature coefficients was analyzed and reported for the first time using the same device. Most of these parameters show a negative trend with temperature, such as drain-source output current I-ds, extrinsic transconductance g(m), effective electron velocity v(eff), threshold voltage V-T, Schottky barrier height phi(b), gate-drain capacitance C-gd, drain-source capacitance C-ds, intrinsic transconductance g(mo), cutoff frequency f(t), and maximum frequency f(max). On the other hand, Two-dimensional electron gas sheet carrier density n(s), ON-resistance R-ON, series resistance R-series, terminal resistances (R-g, R-s, and R-d), output resistance R-ds, input resistance R-i, gate-source capacitance C-gs, and intrinsic delay time tau show a positive trend with temperature. The results provide some valuable insights for future design optimizations of advanced GaAs-based Monolithic microwave integrated circuits.
引用
收藏
页码:1005 / 1012
页数:8
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