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Numerous wireless devices depend on GaAs MESFET RF amplifiers. These amplifiers, or Gallium Arsenide (GaAs) Metal Semiconductor Field Effect Transistor (MESFET) Radio Frequency amplifiers, are used extensively in both consumer handsets and industry infrastructure for cellular, pager, radar, and other wireless communications. The market for cellular telephony in particular has boomed. Demand for new cellular handsets is currently above 40% per year, and CIBC World Markets estimates almost 600 million unit shipments in the year 2004. Enerdyne's Polara allows significant improvement of thermal performance in these devices.

With funding from the Washington Technology Center (WTC) and collaboration with faculty at Washington State University (WSU), Polara modeling exhibits a decrease in junction temperature by 30ºC or more. That means a twofold increase in thermal performance of GaAs RF amplifiers. Additionally, Polara matches the CTE of GaAs, ensuring reliability. Greater thermal performance extends operating lifetimes, improves reliability of operation, and allows size decreases since transistors can sit closer together. It enables desirable weight and cost reductions. Diamond heat spreaders, for instance, are five times as expensive.

Consumers want cell phones that are powerful, portable, and operate for extended lengths of time with minimal recharging. Polara's integrated cooling upon the substrates of RF amplifiers allows smaller chip areas, and thus more chips per wafer, without sacrificing cost or battery life.

 
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