Title :
Near-junction microfluidic thermal management of RF power amplifiers
Author :
Avram Bar-Cohen;Joseph J. Maurer;Abirami Sivananthan
Author_Institution :
DARPA-MTO, Arlington, Virginia, 22203, USA
Abstract :
While gallium nitride (GaN) is attracting broad attention as the wide bandgap material of choice for both industrial and defense applications, thermal impediments present a significant barrier to full exploitation of its inherently high electron sheet charge density and electrical breakdown voltage. For the last four years, the Defense Advanced Research Projects Agency (DARPA) has pursued research focused on reduction of near-junction thermal resistance through use of diamond substrates and convective and evaporative microfluidics. The options, challenges, and techniques associated with the development of this embedded thermal management technology are described, with emphasis on the accomplishments and status of efforts related to GaN power amplifiers.
Keywords :
"Gallium nitride","Diamonds","Heating","Thermal conductivity","Dielectric measurement","Electronic packaging thermal management","Thermal resistance"
Conference_Titel :
Microwaves, Communications, Antennas and Electronic Systems (COMCAS), 2015 IEEE International Conference on
DOI :
10.1109/COMCAS.2015.7360498