transistor_model0218.m

Doherty功放的相关特性的仿真代码

%The model of a transistor
%2007-02-18
%wujianfeng 
%Sweden
Vgs=0:0.1:5;
Vds=1:1:32;
 param=[0.7,5,3,1];
function [Ids]=Ids(Vgs,Vds,param)
%Vth=param.Vth;
Vth=param(1);
%Imax=param.Imax;
Imax=param(2);
%Vknee=param.Vknee;
Vknee=param(3);
%Vgs_sat=param.Vgs_sat;
Vgs_sat=param(4);
K2=2/Vknee;
K1=2/Vgs_sat;

for n=1:length(Vgs),
    for m=1:length(Vds),
        if Vds(m)>0,
            if Vgs(n)-Vth>0,
                Ids(n,m)=tanh(K1*(Vgs(n)-Vth)).*Imax*tanh(K2*Vds(m));
            else
                Ids(n,m)=0;
            end
        else
            Ids(n,m)=1e6*Vds(m);
        end
    end
end