Channel Temperature Analysis of GaN HEMTs With Nonlinear Thermal Conductivity

2015 ◽  
Vol 62 (3) ◽  
pp. 840-846 ◽  
Author(s):  
Ali Darwish ◽  
Andrew J. Bayba ◽  
Hingloi Alfred Hung
Keyword(s):  
Thermal Conductivity ◽  
Temperature Analysis ◽  
Channel Temperature ◽  
Gan Hemts ◽  
Nonlinear Thermal Conductivity

Channel Temperature Measurement of AlGaN/GaN HEMTs by Forward Schottky Characteristics

2011 ◽  
Vol 28 (1) ◽  
pp. 017201 ◽  
Author(s):  
Guang-Chen Zhang ◽  
Shi-Wei Feng ◽  
Pei-Feng Hu ◽  
Yan Zhao ◽  
Chun-Sheng Guo ◽  
...  
Keyword(s):  
Temperature Measurement ◽  
Channel Temperature ◽  
Gan Hemts

Adaptive Thermal Conductivity Metamaterials: Enabling Active and Passive Thermal Control

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Austin A. Phoenix ◽  
Evan Wilson
Keyword(s):  
Thermal Conductivity ◽  
Thermal Management ◽  
Passive Control ◽  
Coefficient Of Thermal Expansion ◽  
Thermal Strain ◽  
Thermal Control ◽  
Variable Thermal Conductivity ◽  
Highly Nonlinear ◽  
Wide Range ◽  
Nonlinear Thermal Conductivity

The novel adaptive thermal metamaterial developed in this paper provides a unique thermal management capability that can address the needs of future spacecraft. While advances in metamaterials have provided the ability to generate materials with a broad range of material properties, relatively little advancement has been made in the development of adaptive metamaterials. This metamaterial concept enables the development of materials with a highly nonlinear thermal conductivity as a function of temperature. Through enabling active or passive control of the metamaterials bulk effective thermal conductivity, this metamaterial that can improve the spacecraft's thermal management systems performance. This variable thermal conductivity is achieved through induced contact that results in changes in the F path length and the conductive path area. The contact can be generated internally using thermal strain from shape memory alloys, bimetal springs, and mismatches in coefficient of thermal expansion (CTE) or it can be generated externally using applied mechanical loading. The metamaterial can actively control the temperature of an interface by dynamically changing the bulk thermal conductivity controlling the instantaneous heat flux through the metamaterial. The design of thermal stability regions (regions of constant thermal conductivity versus temperature) into the nonlinear thermal conductivity as a function of temperature can provide passive thermal control. While this concept can be used in a wide range of applications, this paper focuses on the development of a metamaterial that achieves highly nonlinear thermal conductivity as a function of temperature to enable passive thermal control of spacecraft systems on orbit.

Rigorous channel temperature analysis verified for InAlN/AlN/GaN HEMT

2019 ◽  
Vol 34 (6) ◽  
pp. 065021 ◽  
Author(s):  
M Florovič ◽  
R Szobolovszký ◽  
J Kováč ◽  
J Kováč ◽  
A Chvála ◽  
...  
Keyword(s):  
Temperature Analysis ◽  
Gan Hemt ◽  
Channel Temperature

Determination of Channel Temperature in AlGaN/GaN HEMTs by Pulsed I — V Characteristics

2012 ◽  
Vol 29 (8) ◽  
pp. 087203 ◽  
Author(s):  
Jian-Hui Wang ◽  
Xin-Hua Wang ◽  
Lei Pang ◽  
Xiao-Juan Chen ◽  
Zhi Jin ◽  
...  
Keyword(s):  
Channel Temperature ◽  
Gan Hemts

Experimental Benchmarking of Electrical Methods and $\mu $ -Raman Spectroscopy for Channel Temperature Detection in AlGaN/GaN HEMTs

2016 ◽  
Vol 63 (6) ◽  
pp. 2321-2327 ◽  
Author(s):  
Vice Sodan ◽  
Daisuke Kosemura ◽  
Steve Stoffels ◽  
Herman Oprins ◽  
Martine Baelmans ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Temperature Detection ◽  
Channel Temperature ◽  
Electrical Methods ◽  
Gan Hemts

scholarly journals Measuring the thermal conductivity of the GaN buffer layer in AlGaN/GaN HEMTs

2015 ◽  
Vol 212 (8) ◽  
pp. 1742-1745 ◽  
Author(s):  
Máire Power ◽  
James W. Pomeroy ◽  
Yohei Otoki ◽  
Takeshi Tanaka ◽  
Jiro Wada ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Buffer Layer ◽  
Gan Hemts ◽  
Gan Buffer Layer
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