Rudolph, M. ; Schnieder, F. ; Heinrich, W.
(2004)
Investigation of Thermal Crunching Effects in
Fishbone-Type Layout Power GaAs-HBTs.
In: Gallium Arsenide applications symposium. GAAS 2004, 11—12 Ottobre, Amsterdam.
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Abstract
Thermal current crunching in power HBTs is investigated by numerical simulation. Compact electro-thermal models are connected in parallel, thermal interaction is accounted for by a thermal resistance matrix. It turnes out that the dominant effect in HBTs of fishbone-type layout is that half of the HBT is effectively switched off. This can only be simulated by a slightly asymmetric model.
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