Relaxing the Variational Method-based Measurement Configuration for the Evaluation of Permittivity using a Microstrip Ring Resonator

Joler, Miroslav; Raj, Alex Noel Joseph

doi:10.23919/softcom52868.2021.9559054

Cited by 3 publications

(8 citation statements)

References 5 publications

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“…In our earlier work ([ 17 ] Table 1), it was experienced that the results obtained by the original MRR configuration (as in Figure 4 ) were not desirably close to the reference values of SUT permittivity (

). In addition, working with a PTFE block, as the cover layer for the SUT, is tricky because of its very slippery surface.…”

Section: The Proposed Simplified Mrr Configuration For Measurement Of...mentioning

confidence: 87%

“…The algorithm explained to a greater detail can be found in [ 17 ], while here, we include only the key expression for easier reading of this text. To evaluate an SUT permittivity

, the effective permittivity

of an MRR is to be computed by

where C is the capacitance of an MRR with some specific non-air substrate, and

is the capacitance of the MRR with air as substrate.…”

Section: The Original Mrr Configuration and The Algorithmmentioning

confidence: 99%

“…We therefore conducted full-wave analyses using some known laminate materials (whose data are available from data sheets) and evaluated the relative permittivity for every simulation, as was described in Section 4.2 [ 17 ]. In every simulation, the resulting resonant frequency

was read off the

curve.…”

Section: In Search Of a Proper Sut Sizementioning

confidence: 99%

“…Without the cover layer, it is now easier to align the SUT with the MRR board, but care has to be taken to make a firm contact between the SUT and the MRR surface. The sensitivity of the measured results, with respect to the pressure applied on the SUT surface, was also initially tested in [ 17 ] by three ways: Placing an SUT over the MRR surface without applying any pressure; Pressing the SUT using a pair of plastic clamps ( Figure 7 a); Pressing the SUT using just fingers ( Figure 7 b). …”

Section: The Proposed Simplified Mrr Configuration For Measurement Of...mentioning

confidence: 99%

“…We declare this paper is a revised and extended version of our recent conference papers [ 16 , 17 ], now comprising new discussions and results, references, figures and tables, with a thorough discussion on the simplification to the previously defined measurement configuration.…”

Section: Introductionmentioning

confidence: 99%

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A Simplified Measurement Configuration for Evaluation of Relative Permittivity Using a Microstrip Ring Resonator with a Variational Method-Based Algorithm

Joler

Raj

Bartolic

2022

Sensors

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In this paper, we present a simple yet efficient method for determination of the relative permittivity of thin dielectric materials. An analysis that led to definition of the proper size and placement of a sample under test (SUT) on the surface of a microstrip ring resonator (MRR) was presented based on the full-wave simulations and measurements on benchmark materials. For completeness, the paper includes short descriptions of the design of an MRR and the variational method-based algorithm that processes the measured values. The efficiency of the proposed method is demonstrated on 12 SUT materials of different thicknesses and permittivity values, and the accuracy between 0% and 10% of the relative error was achieved for all SUTs thinner than 2 mm.

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). In addition, working with a PTFE block, as the cover layer for the SUT, is tricky because of its very slippery surface.…”

Section: The Proposed Simplified Mrr Configuration For Measurement Of...mentioning

confidence: 87%

“…The algorithm explained to a greater detail can be found in [ 17 ], while here, we include only the key expression for easier reading of this text. To evaluate an SUT permittivity

, the effective permittivity

of an MRR is to be computed by

where C is the capacitance of an MRR with some specific non-air substrate, and

is the capacitance of the MRR with air as substrate.…”

Section: The Original Mrr Configuration and The Algorithmmentioning

confidence: 99%

was read off the

curve.…”

Section: In Search Of a Proper Sut Sizementioning

confidence: 99%

Section: The Proposed Simplified Mrr Configuration For Measurement Of...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Simplified Measurement Configuration for Evaluation of Relative Permittivity Using a Microstrip Ring Resonator with a Variational Method-Based Algorithm

Joler

Raj

Bartolic

2022

Sensors

Self Cite

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An Economical Method for Modeling, Fabrication, Testing, and Characterization of a Bio-phantom for Pulmonary Edema

P P,

Anand,

Aprem

et al. 2023

2023 IEEE International Conference on Recent Advances in Systems Science and Engineering (RASSE)

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An Efficient and Frequency-Scalable Algorithm for the Evaluation of Relative Permittivity Based on a Reference Data Set and a Microstrip Ring Resonator

Joler

2022

Sensors

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In this paper, a fast and efficient algorithm for the evaluation of relative permittivity of a solid dielectric sample, when measured by a microstrip ring resonator, is proposed. It is verified for permittivity values up to 10 and material-under-test thicknesses up to 8 mm, which cover a wide range of prospective materials that may be used in electronics and communications. The algorithm was tested on 11 samples of various permittivity values and thicknesses and showed a very good agreement with their nominal permittivity values. The maximum error was within 10% even for the sample thicker than 7 mm, while the results for the four standard laminates (TLX8-060, RF60A-0300, RF60A-0620, and FR4) showed an average error of 2.34%. Attractive features of the proposed algorithm are that the results contained in the reference set are frequency-scalable, applicable to many pairs of unknown permittivity and sample thickness values, unbiased, and easily appendable with additional reference points if higher accuracy is sought.

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Relaxing the Variational Method-based Measurement Configuration for the Evaluation of Permittivity using a Microstrip Ring Resonator

Cited by 3 publications

References 5 publications

A Simplified Measurement Configuration for Evaluation of Relative Permittivity Using a Microstrip Ring Resonator with a Variational Method-Based Algorithm

A Simplified Measurement Configuration for Evaluation of Relative Permittivity Using a Microstrip Ring Resonator with a Variational Method-Based Algorithm

An Economical Method for Modeling, Fabrication, Testing, and Characterization of a Bio-phantom for Pulmonary Edema

An Efficient and Frequency-Scalable Algorithm for the Evaluation of Relative Permittivity Based on a Reference Data Set and a Microstrip Ring Resonator

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