|  | Octave-Wcalc: stripline_syn 
 stripline_syn - Symmetric stripline transmission line synthesis
 SYNOPSIS[w_out, h_out, l_out, er_out] = 
stripline_syn(z0, w, h, l, tmet, rho, rough, er, tand, f, flag)PARAMETERSINPUT PARAMETERS
z0
: desired characteristic impedance (Ohms)w
: width of stripline line (meters)h
: substrate thickness (meters)l
: lentgh of stripline line (meters)tmet
: metal thickness (meters)rho
: resistivity of the metalization (relative to copper)rough
: conductor surface roughness (meters-rms)er
: substrate relative permitivittytand
: substrate loss tangentf
: synthesis frequency (Hz)flag
: indicates which parameters should be optimized
    
flag=1 : synthesize the metal widthflag=1 : synthesize the substrate thicknessflag=2 : synthesize the substrate dielectric constantflag=3 : synthesize the metal length OUTPUT VALUES
w_out
: Calculated width of stripline line (meters)h_out
: Calculated height of stripline line (meters)l_out
: Calculated length of stripline line (meters)er_out
: Calculated substrate relative permitivitty of stripline line DESCRIPTION
Function to synthesize the physical dimenstions of a single
stripline transmission line to achieve a desired characteristic
impedance and electrical length.  The desired characteristic
impedance and some of the physical
dimensions of the stripline line are given as inputs and the
remaining dimensions are calculated.
    XXXXXXXXXXXXXXXXX ground XXXXXXXXXXXXXXXXXXXXX
    ----------------------------------------------
   (  dielectric,er         \/           /|\     (
    )             -------   --            |       )
   (             | metal | Tmet           | H    (
    )             -------   --            |       )
   (             <---W--->  /\           \|/     (
    ----------------------------------------------
    XXXXXXXXXXXXXXXXX ground XXXXXXXXXXXXXXXXXXXXX
 EXAMPLE % 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] = ...
  stripline_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));
SEE ALSOair_coil_calcair_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
 
 AUTHOR
Dan McMahill
 BUGS
None known
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