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Silicon-germainum heterojunction bipolar transistor(Si Ge HBT)has been demonstrated to be suitable in extreme environment because of its superior temperature characteristics which can operate from 43 K to 400 K[1].In addition,outstanding hardness to both total ionizing dose(TID)radiation and displacement damage make Si Ge HBT technology particularly attractive for space
Silicon-germainum heterojunction bipolar transistor (Si Ge HBT) has been demonstrated to be suitable in extreme environment because of its superior temperature characteristics which can operate from 43 K to 400 K [1] .In addition, outstanding hardness to both total ionizing dose ( TID) radiation and displacement damage make Si Ge HBT technology particularly attractive for space