【摘要】 基于SiGe异质结双极晶体管(HBT)大信号等效电路模型,建立了SiGeHBT传输电流模型.重点考虑发射结能带的不连续对载流子输运产生的影响,通过求解流过发射结界面的载流子密度,建立了SiGeHBT传输电流模型.该模型物理意义清晰,拓扑结构简单.对该模型进行了模拟,模拟结果与文献报道的结果符合得较好.将该模型嵌入PSPICE软件中,实现了对SiGeHBT器件与电路的模拟分析,并对器件进行了直流分析,分析结果与文献报道的结果符合得较好.更多还原

【Abstract】 Based on the large signal equivalent circuit model of SiGe heterojunction bipolar transistor(HBT),a SiGe HBT transport current model is developed that takes the influence on carrier transport of the energy band discontinuity of the emitter into account.The model features the definite physical meaning and simple topology.The simulated results agree well with the results theoretically analyzed in other literature.The DC characteristic simulated by PSPICE,into which the model is embedded,is in accord with that in other literatures.更多还原