提出了一种改进了的HBT小信号参数直接提取的方法.该方法中在提取极间寄生参数的基础上采用fly-back技术提取发射极和集电极电阻,降低了传统的采用集电极开路的方法提取全部电阻参数的复杂度,并且建立了一套完整的直接提取HBT小信号模型的新方法.与文献报道的小信号模型参数提取的方法相比,该方法的优点是,提取过程具有简明清晰的物理意义,提取速度快,并且具有较好的精度和较宽频带范围的可实用性.%An improved parameter-extraction method for heterojuction bipolar transistors (HBT) small-signal equivalent circuit is presented in this paper.On the basis of the extraction for parasitic-pad parameters,the emitter and collector resistor are obtained by the use of fly-back technology instead of open-collector technology,which reduces the complexity of traditional methodology.Compared with the available methods,there are more clear and concise physical meaning,faster extraction speed and describing the characteristic of HBT more accurately in the method.
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