Function to synthesize the physical dimenstions of a single
microstrip transmission line to achieve a desired characteristic
impedance and electrical length. The desired characteristic
impedance and some of the physical
dimensions of the microstrip line are given as inputs and the
remaining dimensions are calculated.
|<--W-->|
_______
| metal | <- rho,rough
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( dielectric /|\ (
) er,tand H | )
( \|/ (
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XXXXXXXXXXXXXXXXXX ground XXXXXXXXXXXXXXXXXXXX
// mils to meters conversion factor sf=25.4e-6; // desired impedance z0=75; // desired electrical length (degrees) elen=90; // width (we'll synthesize this) w=0; // height h=62*sf; // length l=1100*sf; // metal thickness tmet=1.4*sf; // resitivity rho=1.72e-8; // metal surface roughness rough=0.05*sf; // relative dielectric constant er=4.5; // loss tangent tand=0.01; // frequency f=2.4e9; // synthesize width flag=0; [w_out,h_out,l_out,er_out] = ... microstrip_syn(z0,elen,w,h,l,tmet,rho,rough,er,tand,f,flag); disp(sprintf('w=%g mils, l=%g mils',w_out/sf,l_out/sf)); disp(sprintf('er=%g',er_out)); disp(sprintf('z0=%g ohms, length=%g degrees',z0,elen));
air_coil_calc
air_coil_syn
coax_calc
coax_syn
coupled_microstrip_calc
coupled_microstrip_syn
ic_microstrip_calc
ic_microstrip_syn
microstrip_calc
microstrip_syn
stripline_calc
stripline_syn
Dan McMahill
None known