skrf.calibration.calibration.TwoPortOnePath

class skrf.calibration.calibration.TwoPortOnePath(measured, ideals, n_thrus=None, source_port=1, *args, **kwargs)

Two Port One Path Calibration (aka poor man’s TwelveTerm)

Provides full error correction on a switchless three receiver system, i.e. you can only measure the waves a1,b1,and b2. Given this architecture, the DUT must be flipped and measured twice to be fully corrected.

To allow for this, the apply_cal method takes a tuple of measurements in the order (forward,reverse), and creates a composite measurement that is correctable.

Attributes

biased_error	Estimate of biased error for overdetermined calibration with multiple connections of each standard
caled_ntwk_sets	Returns a NetworkSet for each caled_ntwk, grouped by their names
caled_ntwks	List of the corrected calibration standards
coefs	Dictionary or error coefficients in form of numpy arrays
coefs_12term	Dictionary of error coefficients for 12-term Model
coefs_12term_ntwks	Dictionary or error coefficients in form of Network objects
coefs_3term	Dictionary of error coefficients for One-port Error model
coefs_3term_ntwks	Dictionary of error coefficients in form of Network objects
coefs_8term	Dictionary of error coefficients for 8-term (Error-box) Model
coefs_8term_ntwks	Dictionary of error coefficients in form of Network objects
coefs_ntwks	Dictionary of error coefficients in form of Network objects
error_ntwk	The calculated error Network or Network[s]
family
frequency	Frequency object of the calibration
normalized_directivity	the directivity normalized to the reflection tracking
nstandards	number of ideal/measurement pairs in calibration
output_from_run	Returns any output from the run().
residual_ntwk_sets	Returns a NetworkSet for each residual_ntwk, grouped by their names
residual_ntwks	Dictionary of residual Networks
total_error	Estimate of total error for overdetermined calibration with multiple connections of each standard.This is the combined effects of both biased and un-biased errors
unbiased_error	Estimate of unbiased error for overdetermined calibration with multiple connections of each standard
verify_12term
verify_12term_ntwk

Methods

__init__	initializer
apply_cal	apply the calibration to a measurement
apply_cal_to_all_in_dir	Apply correction to all touchstone files in a given directory.
apply_cal_to_list	Apply correction to list of dict of Networks.
apply_cal_to_network_set	Apply correction to a NetworkSet.
embed	Embed an ideal response in the estimated error network[s]
from_coefs	Creates a calibration from its error coefficients
from_coefs_ntwks	Creates a calibration from its error coefficients
plot_caled_ntwks	Plot corrected calibration standards.
plot_errors	Plot biased, unbiased and total error in dB scaled.
plot_residuals	Plot residual networks.
pop	Remove and return tuple of (ideal, measured) at index.
remove_and_cal	Remove a cal standard and correct it, returning correct and ideal
run
update_coefs	update current dict of error coefficients
write	Write the Calibration to disk using write()