摘要
提出了一种新的确定 PHEMT器件小信号等效电路方法 .这种方法包括对本征元件与非本征元件的解析求解以及逆向求解优化非本征元件 ,从而提高非本征元件值的精度 ,使得整个等效电路的精度大大提高 .这种方法迅速而准确 ,用 Matlab编制的程序可重复使用 .确定的等效电路可以很好地与测量值吻合至 2 0 GHz.
A new method to determine the small-signal equivalent circuit of PHEMT is proposed.This method consists of determining both extrinsic and intrinsic elements analytically,and optimizing extrinsic elements by converse analyzing,which result in the precision of extrinsic elements and the whole equivalent circuit much improved.This method is fast and accurate,and the program finished in Matlab is repeatable.The equivalent circuit determined by this method fits S -parameters measured very well up to 20GHz.
关键词
等效电路
本征
非本征
解析
优化
S参数
equivalent circuit
intrinsic
extrinsic
analytic
optimize
S-parameters
