Design of double ring resonator (DRR) for material properties measurement

Alhegazi, Ammar; Zakaria, Zahriladha; Alahnomi, Rammah A.; Ruslan, Eliyana; Rashid, Siti Rosmaniza Ab

doi:10.1109/icias.2016.7824038

Cited by 7 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Having SUTs of different sizes placed over the MRR surface, while not disclosing the accompanying equations to compute

, as has been the case in various earlier publications, does not really enable us reproduce the results and apply the approach with confidence. In particular, in ([ 8 ] Figure 2), the SUT was placed in the small area around one ring gap (the significance of the gap will be explained in more detail here in Section 3 ), with no expressions that served to evaluate the relative permittivity value based on measurements therein. In ([ 9 ] Figure 2), it seems that the SUT is placed over the entire surface of the substrate, yet it was not explicitly stated in the paper but remains open for a reader’s speculation.…”

Section: The Key Aspects Of the Mrr Methodsmentioning

confidence: 99%

“…Initially, the algorithm was tested using various SUTs by a few approaches, as found in some earlier publications: Placing an SUT only over one ring gap (e.g., as in ([ 8 ] Figure 2)); Placing an SUT over the whole ring and gaps (e.g., as in ([ 14 ] Figure 1b), varying the SUT sizes; Placing the SUTs over the entire area of the MRR, as it may be inferred from ([ 9 ] Figure 2). …”

Section: The Original Mrr Configuration and The Algorithmmentioning

confidence: 99%

“…Amongst prior publications that were using an MRR structure, we found that in [ 8 ], a sample under test (SUT) was placed only over one gap, which is different from the majority of other works, and no permittivity-evaluation algorithm was enclosed. In [ 9 ], the algorithm was satisfactorily explained, but the SUT size and placement have not been unambiguously specified, nor were the SUTs measured therein clearly specified, except for one.…”

Section: Introductionmentioning

confidence: 99%

See 2 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

View full text Add to dashboard Cite

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.

show abstract

“…Having SUTs of different sizes placed over the MRR surface, while not disclosing the accompanying equations to compute

Section: The Key Aspects Of the Mrr Methodsmentioning

confidence: 99%

Section: The Original Mrr Configuration and The Algorithmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

View full text Add to dashboard Cite

show abstract

“…The Q-factor can be determined by (8), where  o is the center of the resonant frequency and is bandwidth at -3dB [21,22].…”

Section: Research Methods 21 Part A: Formulation Of Mrrmentioning

confidence: 99%

Enhancement of microwave ring resonator based on poly-lactic acid thermoplastic substrate

et al. 2020

View full text Add to dashboard Cite

In this paper, the development of a single-port microwave ring resonator (MRR) sensor based on a thermoplastic material, which is poly-lactic acid (PLA), is presented. The open-ended coaxial probe method was applied to identify the dielectric properties of PLA in terms of dielectric constant (2.25) and loss tangent (0.0001). The PLA substrate was fabricated using a hot press machine and with the same thickness (1.6 mm) as FR4. Hence, to consider the PLA as microwave substrate, microwave ring resonator (MRR) operating at 1.1 GHz resonance frequency was designed, simulated, and measured. Based on the observation, the return loss of MRR for the simulation and the measurement of the conventional design are -5.37 dB and -5.02 dB, respectively. The quality factor (Q-factor) for both are 122.22 and 183.33, respectively. Then, the enhanced coupling gap method was applied to improve the performance of MRR sensitivity in terms of return loss and Q-factor. It is observed that the return loss of the enhanced design for the simulation and the measurement are -26.67 dB and -20.23 dB, respectively, and the Q-factor are 122.22 and 200, respectively. Thus, the performance of the MRR based on different designs were compared in order to validate the sensor’s sensitivity and PLA can be recognized as a substrate material for RF and microwave applications.

show abstract

“…Where o f the resonant frequency and BW is the 3dB bandwidth. To calculated the Q-factor without the OUT, the following equation is used [19]:…”

Section: Sensor Designmentioning

confidence: 99%

Analysis and Investigation of a Novel Microwave Sensor with High Q-Factor for Oil Sensing

Alhegazi

Zakaria

Shairi

et al. 2018

IJEECS

Self Cite

View full text Add to dashboard Cite

<span lang="EN-US">In this paper, a novel microwave sensor with high Q-factor for oil sensing is analyzed and investigated. The new design is based on a gap waveguide cavity resonator (GWCR). To characterize and evaluate the sample, the oil under tested (OUT) is injected into a Teflon tube, which is passing through the microfluidic channel that is located in the middle of the cavity where the electric field concentrates. The results show that the proposed sensor has a high Q-factor of 4832. Moreover, the proposed design has the ability to sense and detect different types of oils with a small variation of permittivities such as Fish oil, Coconut oil, Olive oil, Linseed oil and Castor oil. The permittivity equation is extracted using the polynomial fitting method to define unknown dielectric properties of the OUT. The results show that the evaluated permittivity using the proposed sensor has a good agreement with the ideal permittivity. Therefore, the proposed sensor is a good candidate for oil processing in food industries.</span>

show abstract

Design of double ring resonator (DRR) for material properties measurement

Cited by 7 publications

References 9 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

Enhancement of microwave ring resonator based on poly-lactic acid thermoplastic substrate

Analysis and Investigation of a Novel Microwave Sensor with High Q-Factor for Oil Sensing

Contact Info

Product

Resources

About