skrf.media.media.Media

class skrf.media.media.Media(frequency, propagation_constant, characteristic_impedance, z0=None)

The base-class for all transmission line mediums.

The Media object provides generic methods to produce Network‘s for any transmision line medium, such as line() and delay_short().

The initializer for this class has flexible argument types. This allows for the important attributes of the Media object to be dynamic. For example, if a Media object’s propagation constant is a function of some attribute of that object, say conductor_width, then the propagation constant will change when that attribute changes. See __init__() for details.

The network creation methods build off of each other. For example, the specicial load cases, suc as short() and open() call load() with given arguments for Gamma0, and the delay_ and shunt_ functions call line() and shunt() respectively. This minimizes re-implementation.

Most methods initialize the Network by calling match() to create a ‘blank’ Network, and then fill in the s-matrix.

Attributes

characteristic_impedance	Characterisitc impedance
propagation_constant	Propagation constant
z0	Port Impedance

Methods

__init__	The Media initializer.
capacitor	Capacitor
delay_load	Delayed load
delay_open	Delayed open transmission line
delay_short	Delayed Short
electrical_length	calculates the electrical length for a given distance, at
from_csv	create a Media from numerical values stored in a csv file.
guess_length_of_delay_short	Guess physical length of a delay short.
impedance_mismatch	Two-port network for an impedance miss-match
inductor	Inductor
line	Matched transmission line of given length
load	Load of given reflection coefficient.
match	Perfect matched load ().
open	Open ()
resistor	Resistor
short	Short ()
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	Converts electrical length to physical distance.
thru	Matched transmission line of length 0.
white_gaussian_polar	Complex zero-mean gaussian white-noise network.
write_csv	write this media’s frequency, z0, and gamma to a csv file.