Power amplifier chip and carrier

This is a model of a Gallium Arsenide three-stage power amplifier chip mounted on a carrier.  The bottom of the carrier is held at a defined temperature.  The heat was applied over the gate finger area, about 1 micron by 150 microns.

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GaAs chip on a carrier showing mesh and colored by properties
Showing temperatures
Closer view of the temperatures
Even closer view of temperatures.  Heat load was applied over micron area
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