RF dielectric measurements on engineering fluids for jet impingement cooling

Yash Patel; Charles Ringer; Andrew Werdowatz

doi:10.1117/12.2627059

27 May 2022 RF dielectric measurements on engineering fluids for jet impingement cooling

Yash Patel, Charles Ringer, Andrew Werdowatz

Proceedings Volume 12108, Radar Sensor Technology XXVI; 121080H (2022) https://doi.org/10.1117/12.2627059
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Certain engineering fluids are useful to dissipate heat emitted from high power silicon dies. In jet impingement cooling, whereby a jet of fluid is directly sprayed on the device being cooled, the electrical characteristics of the cooling fluids are an important consideration for the cooling design of radio frequency amplifiers. To prevent abnormal behavior and to ensure that modeling and simulation accurately predict the amplifier’s performance, the fluid must have the proper dielectric properties to guarantee sufficient insulation under various temperatures and conditions. This study focuses on determining the relative permittivity and the electric loss tangent of four types of engineering fluids: NovecTM 7300, NovecTM 7500, FluorinertTM FC-40, and FluorinertTM FC-3283 from 500 MHz to 20 GHz across 0℃ (more accurately 1°C) to 50°C at 10°C intervals. The findings of this study indicate that both FC fluids had a lower relative permittivity and loss tangent values than the Novec fluids. These results suggest that the FC fluids would be better suited for amplifier cooling since they are less conductive than the Novec fluids.

Conference Presentation

Citation Download Citation

Yash Patel, Charles Ringer, and Andrew Werdowatz "RF dielectric measurements on engineering fluids for jet impingement cooling", Proc. SPIE 12108, Radar Sensor Technology XXVI, 121080H (27 May 2022); https://doi.org/10.1117/12.2627059

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