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The aim of ARTES 5.1 2012 research activities was to evaluate the EPC components, technologies and processes limiting the operation at high base plate temperature 100°C of the overall SSPA – EPC architecture. This means that substrate temperature could reach about 115°C and components, materials and technologies must therefore be improved to withstand continuous operation with such high thermal constraints.
The challenge is to have a single product developed, with different options depending on input/output characteristics using the same technologies, the same electrical architecture, the same electronic design modules, a common definition and justification file, the same PCB, and a maximum of common EEE parts.
The expected benefits are to answer the expectations of innovative equipment to be used in the near future for telecommunication applications with a market target cost product.
The development plan has been based on 3 phases:
The project has been completed with very good results.
Significant goals have already been reached with the selected components and packaging, especially if a second 125°C step is to be considered. Yet, further analysis and tests need to be performed to validate and qualify long term operating life in GEO.
The current EPC design, under this Artes 5.1 activity, has shown good performances at 100°C operation upon technological aspects and electrical ones, thus fulfilling successfully the objective of this study. Morever, the use of GaNfets has opened many possibilities in terms of efficiency increase, higher switching transitions and frequencies, and EPC volume reduction.
Finally, the availability of a high temperature SSPA based on GaN for the RF-tray, and on GaN for the DCDC converter, can be expected by 2015.