Measured thermal images of a gallium arsenide power MMIC with and without RF applied to the input

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Abstract

A gallium arsenide microwave monolithic integrated circuit (MMIC) power amplifier (M/ACom type MAAM71100) has been measured using infra-red microscope technology, with and without the application of a RF input signal. A reduction of approximately 10 °C in chip temperature was observed with the application of a RF input signal, which will influence the MTTF of the chip. Further, the measurement technique may be used to monitor the thermal impedance and dynamic cooling of RF power devices under operational conditions in complex circuits. © 2002 Elsevier Science Ltd. All rights reserved.

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Oxley, C. H., Coaker, B. M., & Priestley, N. E. (2003). Measured thermal images of a gallium arsenide power MMIC with and without RF applied to the input. Solid-State Electronics, 47(4), 755–758. https://doi.org/10.1016/S0038-1101(02)00356-8

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