skrf.media.media.DefinedGammaZ0

class skrf.media.media.DefinedGammaZ0(frequency=None, z0_port=None, z0=50, Z0=None, 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_port (number, array-like, or None) – z0_port is the port impedance for networks generated by the media. If z0_port is not None, the networks generated by the media are renormalized (or in other words embedded) from the characteristic impedance Z0 of the media to z0_port. Else if z0_port is None, the networks port impedances will be the raw characteristic impedance Z0 of the media. (Default is None)

• 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.

• Z0 (number, array-like, or None) – deprecated parameter, only emmit a deprecation warning.

Attributes

Z0	Characteristic Impedance
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	Return Characteristic Impedance z0_characteristic.
z0_characteristic	Characteristic Impedance, \(z_0\).
z0_override	Port Impedance.
z0_port	Port Impedance.

Methods

__init__
attenuator	Ideal matched attenuator of a given length.
capacitor	Capacitor.
capacitor_q	Capacitor with Q factor.
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.
inductor_q	Inductor with Q factor.
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.
shunt_resistor	Shunted resistor.
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.