Validation of the small-signal model of a forward-biased p-n junction diode

被引:1
|
作者
Kumar, PR [1 ]
Sharma, P [1 ]
Patil, MB [1 ]
机构
[1] Indian Inst Technol, Dept Elect Engn, Kanpur 208016, Uttar Pradesh, India
关键词
p-n junction diode; small-signal model; device simulation; Shockley model;
D O I
10.1016/S0038-1101(00)00020-4
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
Small-signal parameters of an abrupt p-n junction diode under forward bias are computed numerically by solving Poisson's equation and continuity equations together. The parameter values are compared with those obtained with analytical expressions. It is found that the depletion capacitance is underestimated when the depletion approximation is used. The diffusion conductance and capacitance values agree with theory only in a limited range of forward bias voltages, and this range becomes smaller as the minority carrier lifetime decreases. The reasons behind the discrepancy are discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1247 / 1253
页数:7
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