skrf.calibration.calibration.OnePort¶

class
skrf.calibration.calibration.
OnePort
(measured, ideals, *args, **kwargs)[source]¶ Standard algorithm for a one port calibration.
Solves the linear set of equations:
\[ \begin{align}\begin{aligned}e_{11}\mathbf{i_1m_1}\Delta e\,\mathbf{m_1}+e_{00}=\mathbf{i_1}\\e_{11}\mathbf{i_2m_2}\Delta e\,\mathbf{m_2}+e_{00}=\mathbf{i_2}\\e_{11}\mathbf{i_3m_3}\Delta e\,\mathbf{m_3}+e_{00}=\mathbf{i_3}\\...\end{aligned}\end{align} \]Where m’s and i’s are the measured and ideal reflection coefficients, respectively.
If more than three standards are supplied then a least square algorithm is applied.
References
[1] http://na.tm.agilent.com/vnahelp/tip20.html [2] Bauer, R.F., Jr.; Penfield, Paul, “DeEmbedding and Unterminating,” Microwave Theory and Techniques, IEEE Transactions on , vol.22, no.3, pp.282,288, Mar 1974 doi: 10.1109/TMTT.1974.1128212 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1128212&isnumber=25001
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 12term Model 
coefs_12term_ntwks 
Dictionary or error coefficients in form of Network objects 
coefs_3term 
Dictionary of error coefficients for Oneport Error model 
coefs_3term_ntwks 
Dictionary of error coefficients in form of Network objects 
coefs_8term 
Dictionary of error coefficients for 8term (Errorbox) 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 unbiased errors 
unbiased_error 
Estimate of unbiased error for overdetermined calibration with multiple connections of each standard 
verify_12term 

verify_12term_ntwk 
Methods
__init__ 
One Port initializer 
apply_cal 
Apply correction to a Network 
apply_cal_to_all_in_dir 

apply_cal_to_list 
Apply correction to list of dict of Networks. 
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 
Plots corrected calibration standards 
plot_errors 
Plots 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 currect dict of error coefficients 
write 
Write the Calibration to disk using write() 