Generalized Multimode SIW Cavity-Based Sensor for Retrieval of Complex Permittivity of Materials

Tiwari, Nilesh Kumar; Jha, Abhishek; Singh, Surya Prakash; Akhter, Zubair; Varshney, Prashant Kumar; Akhtar, M. Jaleel

doi:10.1109/tmtt.2018.2830332

Cited by 42 publications

(16 citation statements)

References 35 publications

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“…Meanwhile, the permittivity characterization methods based on resonance structure provide a quite convenient measurement progress of the resonant frequency, peak attenuation and quality factor which can be directly read out from the S-parameters. Therefore, researchers have proposed a variety of resonant structures for the characterization of complex permittivity, such as cavity device [ 11 , 12 ] and substrate integrated waveguide (SIW) device [ 13 , 14 ]. A rectangular cavity device based on improved cavity perturbation method at the range of 26.5–40 GHz has been proposed in our previous work [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Tang

Wang

et al. 2021

Sensors

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A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.

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Section: Introductionmentioning

confidence: 99%

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Tang

Wang

et al. 2021

Sensors

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“…As the most important component in a sensing system, the performance of SE significantly affects the sensitive, resolution and implementation complexity of the microwave spectroscopy platform. In the literature, sorts of structures represented by metallic waveguide [9], substrate integrated waveguide (SIW) [10], coplanar waveguide [11], microfluidic channel, passive and active microwave resonators [12] as well as meta-material [13] have been reported. Corresponding to the diversified SE configurations, detection techniques or frequency response characterization methods have also many different forms.…”

Section: Introductionmentioning

confidence: 99%

A Portable Microwave Interferometry Sensor for Permittivity Detection Based on CCMRC

Chen

Zhou

et al. 2020

IEEE Access

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A portable microwave complex permittivity sensor based on the interferometry configuration is proposed. A complementary compact microstrip resonant cell (CCMRC) is applied as the sensitive element, which converts the dielectric information of the material under test (MUT) into the phase variations of its transmission coefficient. A miniaturized interferometry platform based on a downconverting mixer further translates the phase change into DC output voltage variation, which can be readily recorded with a direct readout circuit. In this context, expensive and bulky vector network analyzer is no longer needed, thereby leading to a low hardware cost. With comprehensive theoretical analysis, the material permittivity is simply extracted using a specific extrapolation algorithm. As a proof of concept, several different solid material samples with known permittivity values are used to verify the devised detection system. INDEX TERMS Complementary compact microstrip resonant cell (CCMRC), dielectric spectroscopy, direct-conversion mixer, interferometry, microwave sensor.

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“…While in broadband material characterization, the higher order modes have also been considered in the metal waveguide cavity [9]. Also, in [10], the conventional cavity perturbation method is modified to be suitable for the higher order modes and the measurement is done in the TE 1,0,5 , TE 1,0,7 , TE 1,0,9 , and TE 1,0,11 . Furthermore, back propagation artificial neural networks are also utilized for obtaining the complex permittivity [11, 12].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, by using a winding fluidic channel, the interaction between the liquid under test and the induced electric field increased. It is important to note that unlike the method presented in [10], which restricted the detection to the higher odd modes, in the proposed approach, by using a fluidic channel, we are able to do the detection task in all the higher modes.…”

Section: Introductionmentioning

confidence: 99%

Employing higher order modes in a broadband SIW sensor for permittivity measurement of medium loss materials

Kazemi

Moradi

Ghorbani

2020

Int. J. Microw. Wireless Technol.

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In this paper, a novel SIW microwave sensor is designed to accurately determine the broadband complex permittivity of medium loss and dispersive liquids using a number of higher order modes in 11–20 GHz. To achieve a higher accuracy in characterization, the sensor is equipped with some methods such as Photonic Band Gap method, slow-wave via, and a new feedline, which enhances the quality factor for the higher order TE1,0,n modes. The operating principle of this sensor is based on the cavity perturbation technique, in which the resonant properties of the cavity are utilized to extract the dielectric properties of liquid under test. To provide a method to decrease the LUT consumption, a winding microfluidic channel is designed and embedded in the cavity. The channel increases the interaction between the induced electric field and the LUT. The accuracy of different perturbation technique for determination of permittivity is compared with each other.

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Generalized Multimode SIW Cavity-Based Sensor for Retrieval of Complex Permittivity of Materials

Cited by 42 publications

References 35 publications

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

A Portable Microwave Interferometry Sensor for Permittivity Detection Based on CCMRC

Employing higher order modes in a broadband SIW sensor for permittivity measurement of medium loss materials

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