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2.6. MATLAB Files

The following MATLAB files should allow readers to re-create some of the solutions in this chapter. These files can also be customized to solve variations problems that a reader might later encounter.

2.6.1. Parametric Model to RLGC

function [r,l,g,c]=RLGCExpQ22(f);
r0c=406.65;
ac=0.2643;
l0=1.229;
linf=0.927;
fm=386e3;
b=0.794;
g0=0.0432;
ge=0.8805;
cinf=0.071;
c0=0.121;
ce=0.245;
r=sqrt(sqrt(r0c^4+ac.*f.^2));
l=(l0+linf*(f./fm).^b)./(1+(f./fm).^b);
g=g0.*f.^ge;
c=cinf+c0.*f.^(-ce);

2.6.2. RLGC to ABCD Parameters

 function [a,b,c,d]=abcd(f,r,l,g,d); jw=(j*2*pi).*f'; rf=interp1(r(:,1),r(:,2),f,'spline'); lf=interp1(l(:,1),l(:,2),f,'spline'); gf=interp1(g(:,1),g(:,2),f,'spline'); cf=0.083*ones(length(f),1); gamma=((rf+jw.*lf*1e-3).*(gf*1e-6+jw.*cf*1e-6)).^0.5; ...