www.pudn.com > antennas-and-radio-wave-propagation.rar > 对称振子输入阻抗曲线.m, change:2002-01-01,size:340b


%对称振子输入阻抗曲线 
zz=[340 460 560 100]; 
a=0.15;b=4.5; 
l=0:0.01:1; 
for i=1:4 
    zoa=zz(i); 
    rin=zoa*(sinh(2*a*l)-a/b*sin(2*b*l))./(cosh(2*a*l)-cos(2*b*l)); 
    xin=zoa*(a/b*sinh(2*a*l)+sin(2*b*l))./(cosh(2*a*l)-cos(2*b*l)); 
    subplot(1,2,1);plot(l,rin);hold on;grid on; 
    subplot(1,2,2);plot(l,xin);hold on;grid on; 
end