Function to synthesize the physical parameters of a coaxial transmission line to achieve a given set of electrical characteristics.
// mils to meters conversion factor
sf=25.4e-6;
// desired characteristic impedance
z0=75.0;
// desired electrical length (degrees)
elen=90.0;
// radius of inner conductor
a=10.0*sf;
// inner radius of outer conductor
b=100.0*sf;
// offset of inner conductor
c=0*sf;
// thickness of outer conductor
t=5.0*sf;
// resistivity of inner conductor
rho_a=3.5e-8;
// resistivity of outer conductor
rho_b=rho_a;
// relative permitivitty of dielectric
er=9.5;
// dielectric loss tangent
tand=0.01;
// 100 MHz operation
f=100e6;
// synthesize b
flag=1;
[a,b,c,er,len] = ...
coax_syn(z0,elen,a,b,c,t,rho_a,rho_b,er,tand,f,flag);
disp(sprintf('z0 = %g Ohms',z0));
disp(sprintf('elen = %g degrees',elen));
disp(sprintf('a = %g m',a));
disp(sprintf('b = %g m',b));
disp(sprintf('c = %g m',c));
disp(sprintf('er = %g ',er));
disp(sprintf('len = %g m',len));
air_coil_calc
air_coil_syn
coax_calc
coax_syn
coplanar_calc
coplanar_syn
coupled_microstrip_calc
coupled_microstrip_syn
coupled_stripline_calc
coupled_stripline_syn
ic_microstrip_calc
ic_microstrip_syn
microstrip_calc
microstrip_syn
stripline_calc
stripline_syn
Dan McMahill
None known
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