Abstract
We present results on the impact of proton irradiation on the dc and ac characteristics of third-generation, 0.12 /spl mu/m 185 GHz SiGe HBTs. Comparisons with prior technology generations are used to assess how the structural changes needed to enhance performance between second and third generation technology couple to the observed proton response. The results demonstrate that SiGe HBT technologies can successfully maintain their a Mrad-level total dose hardness, without intentional hardening, even when vertically-scaled in order to achieve unprecedented levels of transistor performance.
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