SYNOPSIS

PARAMETERS

INPUT PARAMETERS

• z0 : desired characteristic impedance (Ohms)
• w : width of ic_microstrip line (meters)
• h : substrate thickness (meters)
• l : lentgh of ic_microstrip line (meters)
• tmet : metal thickness (meters)
• rho : resistivity of wire (relative to copper)
• rough : conductor surface roughness (meters-rms)
• er : substrate relative permitivitty
• tand : substrate loss tangent
• f : synthesis frequency (Hz)
• flag : indicates which parameters should be optimized
  • flag=1 : synthesize the metal width
  • flag=1 : synthesize the substrate thickness
  • flag=2 : synthesize the oxide thickness

OUTPUT VALUES

• w_out : calculated metal width
• h_out : calculated substrate thickness
• tox_out : calculated oxide thickness
• l_out : calculated metal length

DESCRIPTION

Function to synthesize the physical dimenstions of a single ic_microstrip transmission line to achieve a desired characteristic impedance and electrical length. The desired characteristic impedance and some of the physical dimensions of the ic_microstrip line are given as inputs and the remaining dimensions are calculated. The model accounts for dispersion (frequency dependent propagation velocity).

                 |<--W-->|
                  _______    
                 | metal | <- tmet,rho,rough
    ----------------------------------------------
   {**************  Oxide (tox,eox) **************
    ----------------------------------------------
   (  substrate                          /|\     (
    )   es,sigmas                     H   |       )
   (                                     \|/     (
    ----------------------------------------------
    XXXXXXXXXXXXXXXXXX ground XXXXXXXXXXXXXXXXXXXX

EXAMPLE

*
ic_microstrip_syn 50.00 90.0 50e-6 1e-3 1.0e-6 4.5 200e-6 9.6 0.1 1.0e-6 3.0e-8 0.1e-6 2.4e9 0
ic_microstrip_syn 50.00 90.0 50e-6 1e-3 1.0e-6 4.5 200e-6 9.6 0.1 1.0e-6 3.0e-8 0.1e-6 2.4e9 1
ic_microstrip_syn 100.0 90.0 50e-6 1e-3 1.0e-6 4.5 200e-6 9.6 0.1 1.0e-6 3.0e-8 0.1e-6 2.4e9 2
*
  

SEE ALSO

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

AUTHOR

Dan McMahill

BUGS

None known

Please report any bugs on the Wcalc Sourceforge Project Page

Return to the Stdio-Wcalc page.