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A NEW METHOD TO DETERMINE PARASITIC CAPACITANCES FOR HEMTs

机译:确定HEMT寄生电容的新方法

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摘要

A new direct extraction method for the determination of the parasitic capacitances of HEMTs is presented in this article. This method is based on a physically meaningful depletion-layer model and the theoretical analysis of the two-port network for the pinch-off cold FETs. The main advantage of this approach is that parasitic capacitance C_(pg), C_(pd), and C_(pdg) can be extracted under different pinch-off conditions. Good agreement is obtained between modeled and measured results for 2 × 20 μm gate width HEMT (number of gate fingers 3 unit gate width).
机译:本文提出了一种新的直接提取方法,用于确定HEMT的寄生电容。该方法基于物理意义上的耗尽层模型和夹断式冷FET的两端口网络的理论分析。这种方法的主要优点是可以在不同的夹断条件下提取寄生电容C_(pg),C_(pd)和C_(pdg)。对于2×20μm栅极宽度HEMT(栅极指的数量3单位栅极宽度),在建模和测量结果之间取得了良好的一致性。

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