InP／InGaAsP异质结双极晶体管发射极条长及基区宽度的选择

The Choosing of Emitter Length and Base Width of InP/InGaAsP HBT

本文以Ｅｂｅｒｓ－Ｍｏｌｌ模型为基础，对ＩｎＰ／ＩｎＧａＡｓＰ异质结双极晶体管的高频小信号调制性能进行计算机辅助分析，研究了影响器件高频性能的几个主要模型参数，讨论了在一定的工作电流下，发射极条长及基区宽度对器件高频小信号调制性能的影响，给出了优化选择发射极条长及基区宽度的近似方法。

Based on the EM-3 model,the small-signal high frequency characteristics of InP/InGaAsP HBT are simulated in this paper. The effects of emitter length and base width of HBT on 3 dB modulation bandwidth,at given working current,are discussed. The method for choosing the optimum emitter length and base widthis presented.