Flip-chip integration of power HEMTs: a step towards a GaN MMIC technology
2003
In this paper, flip-chip integration is demonstrated as a method for faster progress towards a GaN MMIC technology by separating the development of active devices and passive matching circuits. This approach offers distinct advantages in the verification of passive components realized on a 2" SiC substrate. A proven 0.3/spl mu/m GaAs PHEMT technology was used for the transistors that allowed to reproducibly verify both, the flip-chip transitions and the behaviour of the coplanar SiC structures. As an example, three X-band amplifiers in flip-chip technology are presented that demonstrate the feasibility of the technology.
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