efficiency_voltage_current.m

Doherty功放的相关特性的仿真代码

%efficiency of a pa when we consider the loss of the PA
%2007-02-16
%wujianfeng
%Sweden
clear all
close all

vdd=30;
k=pi/4;
vo1=[0:1:14];
zo=2;
rsr=zo/10;
rsh=zo*10;
for n=1:1:length(vo1)
    vo=vo1(n);
id(n)=vo*(rsh+zo)/(rsh*zo);
vd(n)=id(n)*rsr+vo;
eff(n)=((vd(n)-id(n)*rsr)*id(n))/(vdd*k*(id(n)+(vd(n)/rsh)));
if eff(n)<=0
    eff(n)=0;
end

end
figure(1)
plot(vo1,id);
xlabel('Vd');
ylabel('Eff');
%zlabel('eff');
figure(2)
%c=contour(vd,id,eff,15);
%clabel(c);
plot(vo1,vd)
xlabel('Vd');
ylabel('eff');
figure(3)
plot(vo1,eff)
%c1=contour3(vd,id,eff,15);
%clabel(c1);
xlabel('Vd');
ylabel('Id');
%zlabel('eff');