Evaluation of four-terminal-pair capacitance standards using electrical equivalent circuit model

Singh, Satish; Babita, .; Khurana, Bharat; Kumar, Sachin; Saxena, Anil

doi:10.1016/j.measurement.2015.05.003

Cited by 15 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequency characteristics of the 4TP capacitance standard up to 10 MHz are also estimated by determining capacitance deviation from the reference capacitance to the typical capacitance values determined at frequencies above 1 kHz. To validate the automated characterization module, the values of capacitance standards (100 pF and 1000 pF) up to 10 MHz computed through the automated characterization module are compared with the evaluated values obtained by s-parameter method [11] and also with the values obtained by measuring each 4TP standard using an Agilent 4285A LCR meter. The Table illustrates the comparison results for 1000 pF and 100 pF capacitance standards along with associated expanded uncertainty in measurement (u e ) up to 10 MHz.…”

Section: Characterization Resultsmentioning

confidence: 99%

“…Capacitance from Computed s-parameter capacitance using Measured capacitance method [11] automated module using LCR meter 1000 pF 100 pF 1000 pF 100 pF 1000 pF ± U e 100 pF ± U e 1other. The automated module will be further modified to incorporate the extended feature of the evaluation of expanded uncertainty in the measurement of each capacitance standard.…”

Section: Freq Mhzmentioning

confidence: 99%

“…The evaluation and characterization of the 4TP capacitance standard is essential from the metrological point of view. The evaluation of capacitance standards using the s-parameter method [9][10][11] is very complex and it requires measurement of two-port s-parameters with a vector network analyzer and a lot of computation is required to determine the uncertainty in measurement. The impedance-matrix ([Z]) method proposed by Suzuki [12][13][14] is an alternate technique to characterize the same and it is relatively simple to implement.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Automated module for characterization of reference standards of capacitance by impedance-matrix method

Singh¹,

John²

2017

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

An automated module has been developed, implemented, and validated for the characterization of fourterminal-pair capacitance standards using an impedance-matrix method. These air-dielectric capacitance standards are being used as reference or transfer standards of capacitance at high frequency across national metrology institutes worldwide. In the reported work, an automated characterization module performs the acquisition of reference capacitance and residual capacitive parameters from an ultraprecision capacitance bridge. It also acquires single-port reactances of the capacitance standard from an impedance analyzer at frequencies ranging from 40 MHz to 100 MHz. The acquired capacitive and reactance parameters are stored structurally in arrays from where they are further analyzed according to the impedance-matrix method. The frequency characteristics of four-terminal-pair capacitance standards are thereafter estimated up to 10 MHz and are presented through a user-friendly interface. An automated module provides a reliable, precise, and efficient way to control the frequency characterization of reference standards of capacitance. The reported work emphasizes the importance of automated modules to control complex procedures, which are involved in the advancement of metrology.

show abstract

Section: Characterization Resultsmentioning

confidence: 99%

Section: Freq Mhzmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Automated module for characterization of reference standards of capacitance by impedance-matrix method

Singh¹,

John²

2017

Turk J Elec Eng & Comp Sci

View full text Add to dashboard Cite

show abstract

“…The LCR meter supports 4TP measurement, which minimises the prevalent secondary effects due to stray capacitances and mutual or self-inductances of connecting leads. In addition, it is metrologically traceable to the National Standard of Impedance maintained at the "National Measurement Institute" of India, the CSIR-National Physical Laboratory (CSIR-NPL) [23][24][25][26]. The LDTF is fitted with 4TP Sub-Miniature versions A (SMA) connectors to support 4TP measurement as shown in Figure 1.…”

Section: Experimental Set-upmentioning

confidence: 99%

Analysis of glucose‐dependent dielectric properties of aqueous‐based solution: A proof of concept

Singh

Sen²,

Anand

2021

IET Science Measure & Tech

View full text Add to dashboard Cite

In spite of widespread research and exploration, the status of non-invasive blood glucometer for diabetic people is far from satisfactory. This unlocks the prospect for further significant research in the field of non-invasive blood glucose sensing. An approach towards the research on the development of non-invasive blood glucometer relies on the establishment of correlation, if any, exists between the dielectric properties of blood and the blood glucose level. In this context, the in-vitro study is undertaken as a proof of concept using a standard liquid-dielectric-test-fixture. The research is conducted to analyse the variation in dielectric properties of aqueous-based solution with respect to glucose concentration by utilising test fixture. The employed measurement set-up and the procedure used for the estimation of dielectric properties (complex-relative-permittivity and dissipation factor) of the solution under test are presented. The measurement set-up is validated by determining the dielectric properties of the reference liquid. The evaluation of uncertaintyin-measurement in the complex-relative-permittivity and dissipation factor is also provided in detail. However, the variation in dielectric properties is found to be small under tested conditions, and the in-vitro study conducted out in the perspective of proof of concept has provided an insight that the change in glucose concentration results in quantifiable variation in dielectric properties.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

show abstract

“…The user must select the proper equivalent circuit mode to minimize measurement error. Figure 9 shows the description of the four terminal pair measurement circuit used for the data acquisition process [62,63].…”

mentioning

confidence: 99%

A Feature Engineering-Assisted CM Technology for SMPS Output Aluminium Electrolytic Capacitors (AEC) Considering D-ESR-Q-Z Parameters

Kareem

Hur

2022

Processes

View full text Add to dashboard Cite

Recent research has seen an interest in the condition monitoring (CM) approach for aluminium electrolytic capacitors (AEC), which are present in switched-mode power supplies and other power electronics equipment. From various literature reviews conducted and from a failure mode effect analysis (FMEA) standpoint, the most critical and prone to fault component with the highest percentage is mostly capacitors. Due to its long-lasting ability (endurance), CM offers a better paradigm for AEC due to its application. However, owing to severe conditions (over-voltage, mechanical stress, high temperature) that could occur during use, they (capacitors) could be exposed to early breakdown and overall shutdown of the SMPS. This study considered accelerated life testing (electrical stress and long-term frequency testing) for the component due to its endurance in thousands of hours. We have set up the experiment test bench to monitor the critical electrical parameters: dissipation factor (D), equivalent series resistance (ESR), quality factor (Q), and impedance (Z), which would serve as a health indicator (HI) for the evaluation of the AECs. Time-domain features were extracted from the measured data, and the best features were selected using the correlation-based technique.

show abstract

Evaluation of four-terminal-pair capacitance standards using electrical equivalent circuit model

Cited by 15 publications

References 13 publications

Automated module for characterization of reference standards of capacitance by impedance-matrix method

Automated module for characterization of reference standards of capacitance by impedance-matrix method

Analysis of glucose‐dependent dielectric properties of aqueous‐based solution: A proof of concept

A Feature Engineering-Assisted CM Technology for SMPS Output Aluminium Electrolytic Capacitors (AEC) Considering D-ESR-Q-Z Parameters

Contact Info

Product

Resources

About