Calculate characteristic impedance with and without dispersion for transmission line
Calculate Characteristic Impedance with Dispersion for Coaxial Transmission Line
Create a coaxial transmission line.
txline = txlineCoaxial('OuterRadius',1.47e-3,'InnerRadius',0.45e-3,... 'EpsilonR',3.4,'SigmaCond',5.8e7);
Calculate the characteristic impedance with dispersion for the coaxial transmission line at at the frequency of
z0_f = getZ0(txline,6e9)
z0_f = 38.4927 - 0.0201i
Calculate Effective Epsilon with Dispersion for Microstrip Transmission Line
Create a microstrip transmission line.
txline_morcpw = txlineMicrostrip('Width',4.78e-3,'Height',1.57e-3,... 'LineLength',12.2777e-3,'Thickness',0.003e-3,'EpsilonR',2.2,'SigmaCond',5.88e7);
Calculate the characteristic impedance and effective epsilon with dispersion for the microstrip transmission line for a frequency range of 6–7 GHz.
[z0_f,eff_ep_f] = getZ0(txline_morcpw,6e9:0.2e9:7e9)
z0_f = 6×1 52.4097 52.4822 52.5546 52.6270 52.6994 52.7716
eff_ep_f = 6×1 1.9106 1.9123 1.9139 1.9156 1.9173 1.9189
Calculate Characteristic Impedance and Effective Epsilon of CPW Transmission Line
Create a coplanar waveguide (CPW) transmission line.
txline_morcpw = txlineCPW('ConductorWidth',45e-6,'SlotWidth',50e-6,'Height',525e-6,... 'Thickness',1e-6,'EpsilonR',2.5,'SigmaCond',3.33e7);
Calculate the characteristic impedance and effective epsilon of the CPW transmission line.
[z0,eff_ep] = getZ0(txline_morcpw)
z0 = 116.8647
eff_ep = 1.7303
txline — Transmission line
transmission line object
Transmission line, specified as one of the following transmission line objects:
freq — Design frequency
positive scalar | vector
Design frequency, specified as a positive scalar or vector in hertz.
z0 — Characteristic impedance without effect of dispersion
Characteristic impedance without the effect of dispersion, returned as a complex scalar.
z0_f — Characteristic impedance with effect of dispersion
Characteristic impedance with the effect of dispersion for a microstrip or CPW transmission line, returned as a vector.
eff_ep — Effective epsilon without effect of dispersion
Effective epsilon without the effect of dispersion for a microstrip or CPW transmission line, returned as a scalar.
eff_epf — Effective epsilon with effect of dispersion
scalar | vector
Effective epsilon with the effect of dispersion for a microstrip or CPW transmission line, returned as a scalar or vector.
Version HistoryIntroduced in R2020b
R2023a: Calculate characteristic impedance with and without dispersion for transmission of transmission line limped element
txline to calculate
the noise figure of the transmission line limped element.