A Fully Integrated Low-Power 30 GHz Complex Dielectric Sensor in a 0.25-$\mu$m BiCMOS Technology

Jamal, Farabi Ibne; Guha, Saikat; Eissa, Mohamed Hussein; Wessel, Jan; Kissinger, Dietmar

doi:10.1109/jerm.2018.2835656

Cited by 11 publications

(6 citation statements)

References 32 publications

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“…Six mixtures of methanol-isopropanol, ranging from 0% methanol to 100% methanol (in volumes), were prepared. The effective permittivity and viscosity values of the mixtures at the working frequency of the sensor were calculated using mixture theories [ 28 , 30 , 36 ]. The theoretical values of the mixture permittivity and viscosity are plotted in Figure 7 .…”

Section: Resultsmentioning

confidence: 99%

“…Two DC inputs of 2.5 V are required for the system power source. On the other hand, each sensor provides two DC outputs in a range of 0–1 V for the real and imaginary parts of the measured permittivity, as shown in Figure 3 d. Further details regarding the circuit design are available in our previous work [ 30 , 31 ]. Using DC inputs and outputs, the amount of perturbation on the system was diminished and the sensor performance was significantly improved.…”

Section: Methodsmentioning

confidence: 99%

“… ( a ) Sensor oscillator circuit [ 30 ], ( b ) second-generation chip with a quadruple-sensor configuration, ( c ) integration of the DC readout circuit and the sensor on the CMOS platform [ 31 ], ( d ) test board of the second-generation dielectric sensor with DC inputs and outputs. …”

Section: Figurementioning

confidence: 99%

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Design and Fabrication of a BiCMOS Dielectric Sensor for Viscosity Measurements: A Possible Solution for Early Detection of COPD

et al. 2018

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The viscosity variation of sputum is a common symptom of the progression of Chronic Obstructive Pulmonary Disease (COPD). Since the hydration of the sputum defines its viscosity level, dielectric sensors could be used for the characterization of sputum samples collected from patients for early diagnosis of COPD. In this work, a CMOS-based dielectric sensor for the real-time monitoring of sputum viscosity was designed and fabricated. A proper packaging for the ESD-protection and short-circuit prevention of the sensor was developed. The performance evaluation results show that the radio frequency sensor is capable of measuring dielectric constant of biofluids with an accuracy of 4.17%. Integration of this sensor into a portable system will result in a hand-held device capable of measuring viscosity of sputum samples of COPD-patients for diagnostic purposes.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Design and Fabrication of a BiCMOS Dielectric Sensor for Viscosity Measurements: A Possible Solution for Early Detection of COPD

et al. 2018

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“…A buffer, inserted between the power detector and mixer, decouples both detection principles. A fully integrated version of the dielectric sensor, operating at 30 GHz and intended for complex characterization of biological materials, has been demonstrated in [56]. The chip with a size of 2.3 mm 2 and a power consumption of 50 mW is depicted in Fig.…”

Section: A Sensing Oscillatorsmentioning

confidence: 99%

Integrated Millimeter-Wave and Terahertz Analyzers for Biomedical Applications

Kissinger

Kaynak

Mai

2022

IEEE Trans. Microwave Theory Techn.

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“…Hence, the effect of real and imaginary parts of Eq. (32) turns out to be comparable and the dielectric characterization of the material is equally governed by ε r and ε r [115]. Therefore, energy loss quantified by ε r can not be ignored compared to energy storage determined by ε r due to the applied E.…”

Section: Frequency-dependent Dielectric Properties Of Tissuesmentioning

confidence: 99%