skrf.media.media.DefinedGammaZ0

class skrf.media.media.DefinedGammaZ0(frequency=None, z0=None, Z0=50, gamma=1j)

A media directly defined by its propagation constant and characteristic impedance.

Parameters

• frequency (Frequency object or None) – frequency band of this transmission line medium. Default is None, which produces a 1-10ghz band with 101 points.

• z0 (number, array-like, or None) – The port impedance for media. Only needed if its different from the characteristic impedance of the transmission line. if z0 is None then it will default to Z0

• gamma (number or array-like, optional) –

  complex propagation constant. gamma must adhere to the following convention:

  • positive real(gamma) = attenuation

  • positive imag(gamma) = forward propagation

  Default is 1j (lossless).

• Z0 (number or array-like, optional.) – complex characteristic impedance of the media. Default is 50 ohm.

Attributes

Z0	Characteristic Impedance of the media.
alpha	Real (attenuation) component of gamma.
beta	Imaginary (propagating) component of gamma.
frequency
gamma	Propagation constant.
npoints	Number of points of the frequency axis.
v_g	Complex group velocity (in m/s).
v_p	Complex phase velocity (in m/s).
z0	Characteristic Impedance.

Methods

__init__
attenuator	Ideal matched attenuator of a given length.
capacitor	Capacitor.
copy	Copy of this Media object.
delay_load	Delayed load.
delay_open	Delayed open transmission line.
delay_short	Delayed Short.
electrical_length	Calculate the complex electrical length for a given distance.
extract_distance	Determines physical distance from a transmission or reflection Network.
from_csv	Create a Media from numerical values stored in a csv file.
get_array_of
impedance_mismatch	Two-port network for an impedance mismatch.
inductor	Inductor.
isolator	Two-port isolator.
line	Transmission line of a given length and impedance.
load	Load of given reflection coefficient.
lossless_mismatch	Lossless, symmetric mismatch defined by its return loss.
match	Perfect matched load (\(\Gamma_0 = 0\)).
mode	Create another mode in this medium.
open	Open (\(\Gamma_0 = 1\)).
plot
random	Complex random network.
resistor	Resistor.
short	Short (\(\Gamma_0 = -1\))
shunt	Shunts a Network.
shunt_capacitor	Shunted capacitor.
shunt_delay_load	Shunted delayed load.
shunt_delay_open	Shunted delayed open.
shunt_delay_short	Shunted delayed short.
shunt_inductor	Shunted inductor.
splitter	Ideal, lossless n-way splitter.
tee	Ideal, lossless tee.
theta_2_d	Convert electrical length to physical distance.
thru	Matched transmission line of length 0.
to_meters	Translate various units of distance into meters.
white_gaussian_polar	Complex zero-mean gaussian white-noise network.
write_csv	write this media's frequency, gamma, Z0, and z0 to a csv file.