NanoVNA : Three papers on ResearchGate regarding the calibration technique
of NanoVNA

Hello.

It may be of some interest to you that NanoVNA uses the calibration
technique which is the subject of the following three papers by us now available on ResearchGate.

Sincerely,

73

Nikolitsa, OE3ZGN|SV7DMC
Petros, OE3ZZP|SV7BAX

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1/3
Building Complex Differential Error Regions

October 2008

Conference: ANAMET Meeting 30 At: NPL National Physical Laboratory,
Teddington, UK Volume: Session III, Measurement uncertainty and
traceability

Abstract

It is impossible to analytically estimate real uncertainties directly
from complex differential errors - Real rectangular uncertainties are
estimated from the orthogonal circumscribed about the complex DER -
Real polar uncertainties are estimated from the annular sector
circumscribed about the complex DER - The proposed method of
uncertainty estimation, by building complex DERs, can be applied to
any VNA calibration technique.

https://www.researchgate.net/publication/230625680_Building_Complex_Differe ntial_Error_Regions

2/3
Complex DERs in Non-Zero Length Thru VNA Measurements

October 2009

Conference: ANAMET Meeting 32, At: National Physical Laboratory NPL, Teddington, UK Volume: Session III

Abstract

After "Building Complex Differential Error Regions" for two-port
calibration VNA measurements, in 30th ANAMET meeting, we are
considering now the case of Non-Zero Length Thru or indirect Thru with
SLOT calibration for either case of same type/sex connectors or
different type connectors, on both ports.

https://www.researchgate.net/publication/230625718_Complex_DERs_in_Non-Zero _Length_Thru_VNA_Measurements

3/3
Measurement Uncertainty in Network Analyzers: Differential Error
Analysis of Error Models Part 4: Non-Zero Length Through in Full
Two-Port SLOT Calibration

September 2016

Journal: FunkTechnikPlus # Journal, Issue: 11, Year: 4, Pages: V1-7 to V1-2
9

The most accurate full two-port calibration of a VNA Vector Network
Analyzer requires a Direct or Zero–Length Through connection. Howev
er,
it is not uncommon at all to have one or two cables and a DUT Device
Under Test with incompatible connectors, either of different type or
of the same type/sex, which enforce then the use of some kind of
barrel or adapter. Thus, in this paper, we study these cases of
Indirect or Non-Zero Length Through, we estimate the effects of such connections on the measurement uncertainty by using our theory of
Differential Error Regions and Intervals DERs/DEIs, and we evaluate
our resulting method by applying it in practice to a built two–port
network, which was measured against frequency with a SLOT calibrated
VNA extended by two lengthy cables.

https://www.researchgate.net/publication/358164808_Measurement_Uncertainty_ in_Network_Analyzers_Differential_Error_Analysis_of_Error_Models_Part_4_Non -Zero_Length_Through_in_Full_Two-Port_SLOT_Calibration

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