Milk Characterization Using Time Domain Wide Band Dielectric Spectroscopy

Saeedi, Samira; Chammani, Somayeh

doi:10.1109/ieeeconf35879.2020.9329951

Cited by 1 publication

(2 citation statements)

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“…More precisely, TD transformed from an FD measurement versus a direct TD measurement has been studied. The proposed system is inspired by the previous research in which TD-WBMS systems were presented for milk qualification [ 25 , 26 ]. In contrast to [ 25 , 26 ], in which permittivity of various milk was estimated using fast Fourier transform (FFT), a relationship between the measured reflected TD signal from MUT and its related glucose concentration is sought.…”

Section: Introductionmentioning

confidence: 99%

“…The proposed system is inspired by the previous research in which TD-WBMS systems were presented for milk qualification [ 25 , 26 ]. In contrast to [ 25 , 26 ], in which permittivity of various milk was estimated using fast Fourier transform (FFT), a relationship between the measured reflected TD signal from MUT and its related glucose concentration is sought. First, the TD reflected signal from MUT has been calculated in MATLAB by applying electromagnetic theory equations.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility Study of Glucose Concentration Measurement of Aqueous Solution Using Time Domain Reflected Signals

Saeedi

Chamaani

Fischer

2022

Sensors

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Recently, wideband microwave spectroscopy (WBMS) has been applied for material characterization. Blood glucose sensing through microwave spectroscopy is usually done with resonant frequency-domain methods. Time-domain (TD) WBMS is a low-cost and convenient technique that can be used for glucose sensing of the aqueous solution. In this paper, early research for the implementation of a TD dielectric spectroscopy setup for glucose concentration measurement is presented. TD reflected signals from water with different glucose content are calculated using inverse Laplace transform. The proposed setup is a quasi-monostatic setup in which measurements are done with two different devices in the frequency range of 0.1 to 6 GHz to make a comparison between frequency domain (FD) and TD methods. Frequency domain (FD) measurement is performed with VNA and two Vivaldi antennas. Then, TD data is obtained using the transforming option of VNA. Direct TD measurement is operated with a maximum length sequence (m-sequence) transceiver. Measurement and numerical results follow the same trend and show good agreement with each other. A monotonic relation between peaks of TD signals and the corresponding glucose concentration is achieved. The variation of the height of the reflected signal’s peak is 0.00002 and 0.0005 for each 50 mg/dl glucose concentration with FD measurements and direct TD measurements, respectively. The glucose concentration range of 25 mg/dl to 400 mg/dl is investigated, and the worst repeatability of this method is 3.65% for 300 mg/dl.

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