Simple method to extract intrinsic and extrinsic base-collector capacitances of bipolar transistors

被引:3
作者
Lee, SH [1 ]
机构
[1] Hankuk Univ Foreign Studies, Dept Elect Engn, Kyungki 449791, South Korea
关键词
bipolar transistors; capacitance measurement; modeling; parameter extraction;
D O I
10.1109/TED.2004.823801
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new and direct method is proposed to determine intrinsic (C(mu)) and extrinsic (C(mux)) base-collector junction capacitances of bipolar junction transistors (BJTs). The voltage dependent curves of C(mu) and C(mux) are obtained by using a new Y-parameter equation that is derived from a simplified "cut-off mode" equivalent circuit including ac current crowding capacitance. This new method is superior to several conventional ones, because it remains valid when there is ac emitter current crowding. The superiority of the new method has been verified by observing much better agreement of modeled gain with measured ones than the conventional method.
引用
收藏
页码:647 / 650
页数:4
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