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Amelia Wong Azman - One of the best experts on this subject based on the ideXlab platform.
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Parasitic Consideration for Differential Capacitive Sensor
Bulletin of Electrical Engineering and Informatics, 2019Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:Parasitic integration for a single supply differential Capacitive sensing technique is presented in this paper. In real Capacitive Sensor measurement, parasitic impedance in its measurement. This paper objective is to study the effect of Capacitive and resistive parasitic to the Capacitive Sensor circuit. The differential Capacitive Sensor circuit derivation theory is elaborated first. Then, comparison is made using simulation. Test was carried out using frequency from 40 kHz up to 400 kHz. Result is presented and have shown good linearity of 0.99984 at 300 kHz, R-squared value. This Capacitive Sensor is expected to be used for energy harvesting application.
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Frequency Dependency Analysis for Differential Capacitive Sensor
Bulletin of Electrical Engineering and Informatics, 2019Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:A differential Capacitive sensing technique is discussed in this paper. The differential Capacitive sensing circuit is making use of a single power supply. The design focus for this paper is on the excitation frequency dependency analysis to the circuit. Theory of the differential Capacitive Sensor under test is discussed and derivation is elaborated. Simulation results are shown and discussed. Next, results improvement has also been shown in this paper for comparison. Test was carried out using frequency from 40 kHz up to 400 kHz. Results have shown output voltage of Vout = 0.07927 Cx + 1.25205 and good linearity of R-squared value 0.99957 at 200 kHz. Potential application for this Capacitive Sensor is to be used for energy harvesting for its potential power supply.
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Single Supply Differential Capacitive Sensor with Parasitic Capacitance and Resistance Consideration
2018 7th International Conference on Computer and Communication Engineering (ICCCE), 2018Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:A single supply differential Capacitive sensing technique is presented in this paper with the focus of parasitic integration. In real application, any Capacitive Sensor should consider parasitic in its measurement. The aim of this paper is to analyze the effect of Capacitive and resistive parasitic to the network circuit. The derivation theory of the differential Capacitive Sensor circuit is elaborated first. Then, comparison is made using simulation. Test was carried out using frequency from 40 k Hz up to 400 kHz. Result is presented and have shown good linearity of 0.99984 at 300 k Hz, R-squared value. Future application is expected to be used for Capacitive Sensor that is making use of energy harvesting application.
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Analysis of the Frequency Dependency to the Single Supply Differential Capacitive Sensor
2018 7th International Conference on Computer and Communication Engineering (ICCCE), 2018Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:This paper presents a single supply differential Capacitive sensing technique. Focus is on the analysis of the excitation frequency dependency to the circuit network. First, the theory and derivation of the differential Capacitive Sensor under test is presented and elaborated. Then, simulation results are shown for comparison. Test was carried out using frequency from 40 k Hz up to 400 k Hz. Results have shown good linearity of R-squared value 0.99957 at 200 k Hz. This Capacitive Sensor is also suitable to be used for energy harvesting application.
B. S. Song - One of the best experts on this subject based on the ideXlab platform.
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BHI - Design of a wireless skin moisture detection system using a Capacitive Sensor
Proceedings of 2012 IEEE-EMBS International Conference on Biomedical and Health Informatics, 2012Co-Authors: K. W. Seong, H. C. Jeon, B. S. SongAbstract:This study proposes a new wireless skin moisture detection system using a Capacitive Sensor rather than traditional optical methods. Moisture is the most important factor for maintaining healthy skin. The moisture in the skin can be detected by a Capacitive Sensor. The aim of this study was to design a wireless Capacitive senor skin moisture detection system. The Capacitive Sensor was pressed onto the skin of a rat to measure the moisture, and the data was transmitted with the RF method. The transmitter and receiver were individually controlled by a microprocessor. The results of the preliminary experiment show that using a Capacitive Sensor to detect skin moisture was possible. In addition, the wireless detection system showed a good performance in an in-vivo experiment.
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Design of a wireless skin moisture detection system using a Capacitive Sensor
Proceedings of 2012 IEEE-EMBS International Conference on Biomedical and Health Informatics, 2012Co-Authors: K. W. Seong, H. C. Jeon, B. S. SongAbstract:This study proposes a new wireless skin moisture detection system using a Capacitive Sensor rather than traditional optical methods. Moisture is the most important factor for maintaining healthy skin. The moisture in the skin can be detected by a Capacitive Sensor. The aim of this study was to design a wireless Capacitive senor skin moisture detection system. The Capacitive Sensor was pressed onto the skin of a rat to measure the moisture, and the data was transmitted with the RF method. The transmitter and receiver were individually controlled by a microprocessor. The results of the preliminary experiment show that using a Capacitive Sensor to detect skin moisture was possible. In addition, the wireless detection system showed a good performance in an in-vivo experiment.
Mohamad Sawan - One of the best experts on this subject based on the ideXlab platform.
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Fully integrated CMOS Capacitive Sensor for Lab-on-Chip applications
2014 IEEE International Symposium on Circuits and Systems (ISCAS), 2014Co-Authors: Ghazal Nabovati, Ebrahim Ghafar-zadeh, Maryam Mirzaei, Giancarlo Ayala-charca, Falah Awwad, Mohamad SawanAbstract:We present a new Charge Based Capacitance Measurement (CBCM) CMOS Sensor for Lab-on-Chip applications. This integrated Capacitive Sensor consists of a fully differential capacitance to voltage converter, a sigma delta (ΣΔ) modulator, and interdigitated electrodes realized on top metal layer in 0.35 μm CMOS process. The proposed CMOS Capacitive Sensor offers higher dynamic-range (10 fF) and sensitivity (350 mV/fF) in comparison to our previously reported core-CBCM Capacitive Sensors. We proved this significant improvement by demonstrating the chemical solvent concentration measurements and discussing the potential applications in environmental monitoring and water safety applications.
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ISCAS - Fully integrated CMOS Capacitive Sensor for Lab-on-Chip applications
2014 IEEE International Symposium on Circuits and Systems (ISCAS), 2014Co-Authors: Ghazal Nabovati, Ebrahim Ghafar-zadeh, Maryam Mirzaei, Giancarlo Ayala-charca, Falah Awwad, Mohamad SawanAbstract:We present a new Charge Based Capacitance Measurement (CBCM) CMOS Sensor for Lab-on-Chip applications. This integrated Capacitive Sensor consists of a fully differential capacitance to voltage converter, a sigma delta (ΣΔ) modulator, and interdigitated electrodes realized on top metal layer in 0.35 μm CMOS process. The proposed CMOS Capacitive Sensor offers higher dynamic-range (10 fF) and sensitivity (350 mV/fF) in comparison to our previously reported core-CBCM Capacitive Sensors. We proved this significant improvement by demonstrating the chemical solvent concentration measurements and discussing the potential applications in environmental monitoring and water safety applications.
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Subthreshold transistor operation for a high sensitivity Capacitive Sensor
2008 Canadian Conference on Electrical and Computer Engineering, 2008Co-Authors: Mohamed Amine Miled, Mohamad SawanAbstract:In this paper a low-power highly sensitive capacitor Sensor is presented. When interfaced to interdigitated electrodes the corresponding circuit, based on capacitance variation, allows sensing microfluidic substances in lab-on-chip applications. We demonstrate the impact of the subthreshold region of transistor on the sensitivity of the Capacitive Sensor while it decreases the power consumption of the circuit. The proposed Capacitive Sensor circuit is implemented in 0.18 mum CMOS technology and the obtained sensitivity is 69 mV/fF.
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A 0.18-μm CMOS Capacitive Sensor Lab-on-Chip
Sensors and Actuators A-physical, 2008Co-Authors: Ebrahim Ghafar-zadeh, Mohamad Sawan, Daniel A Therriault Daniel TherriaultAbstract:In this paper, we put forward a Capacitive Sensor for Lab-on-Chip applications using a charge-based capacitance measurement (CBCM) method. This simple and highly sensitive Capacitive Sensor is implemented in the TSMC 0.18 CMOS process to which we incorporate microfluidic structures for chemical sensing. The post-layout simulation, fabrication and preliminary Lab-on-Chip testing results are also reported.
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A 0.18-μm CMOS Capacitive Sensor Lab-on-Chip
Sensors and Actuators A: Physical, 2008Co-Authors: Ebrahim Ghafar-zadeh, Mohamad Sawan, Daniel A Therriault Daniel TherriaultAbstract:In this paper, we put forward a Capacitive Sensor for Lab-on-Chip applications using a charge-based capacitance measurement (CBCM) method. This simple and highly sensitive Capacitive Sensor is implemented in the TSMC 0.18 CMOS process to which we incorporate microfluidic structures for chemical sensing. The post-layout simulation, fabrication and preliminary Lab-on-Chip testing results are also reported. © 2007 Elsevier B.V. All rights reserved.
Trond Ytterdal - One of the best experts on this subject based on the ideXlab platform.
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A single-ended to differential Capacitive Sensor interface circuit designed in CMOS technology
2004 IEEE International Symposium on Circuits and Systems (IEEE Cat. No.04CH37512), 2004Co-Authors: T Singh, Trond YtterdalAbstract:In this paper, we present a single-ended to differential Capacitive Sensor interface circuit suitable for implementation in CMOS. The interface circuit converts the capacitance change of a single Sensor capacitor into a differential output voltage. The circuit has been designed in a 0.8/spl mu/m CMOS technology.
Nurul Arfah Che Mustapha - One of the best experts on this subject based on the ideXlab platform.
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Parasitic Consideration for Differential Capacitive Sensor
Bulletin of Electrical Engineering and Informatics, 2019Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:Parasitic integration for a single supply differential Capacitive sensing technique is presented in this paper. In real Capacitive Sensor measurement, parasitic impedance in its measurement. This paper objective is to study the effect of Capacitive and resistive parasitic to the Capacitive Sensor circuit. The differential Capacitive Sensor circuit derivation theory is elaborated first. Then, comparison is made using simulation. Test was carried out using frequency from 40 kHz up to 400 kHz. Result is presented and have shown good linearity of 0.99984 at 300 kHz, R-squared value. This Capacitive Sensor is expected to be used for energy harvesting application.
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Frequency Dependency Analysis for Differential Capacitive Sensor
Bulletin of Electrical Engineering and Informatics, 2019Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:A differential Capacitive sensing technique is discussed in this paper. The differential Capacitive sensing circuit is making use of a single power supply. The design focus for this paper is on the excitation frequency dependency analysis to the circuit. Theory of the differential Capacitive Sensor under test is discussed and derivation is elaborated. Simulation results are shown and discussed. Next, results improvement has also been shown in this paper for comparison. Test was carried out using frequency from 40 kHz up to 400 kHz. Results have shown output voltage of Vout = 0.07927 Cx + 1.25205 and good linearity of R-squared value 0.99957 at 200 kHz. Potential application for this Capacitive Sensor is to be used for energy harvesting for its potential power supply.
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Single Supply Differential Capacitive Sensor with Parasitic Capacitance and Resistance Consideration
2018 7th International Conference on Computer and Communication Engineering (ICCCE), 2018Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:A single supply differential Capacitive sensing technique is presented in this paper with the focus of parasitic integration. In real application, any Capacitive Sensor should consider parasitic in its measurement. The aim of this paper is to analyze the effect of Capacitive and resistive parasitic to the network circuit. The derivation theory of the differential Capacitive Sensor circuit is elaborated first. Then, comparison is made using simulation. Test was carried out using frequency from 40 k Hz up to 400 kHz. Result is presented and have shown good linearity of 0.99984 at 300 k Hz, R-squared value. Future application is expected to be used for Capacitive Sensor that is making use of energy harvesting application.
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Analysis of the Frequency Dependency to the Single Supply Differential Capacitive Sensor
2018 7th International Conference on Computer and Communication Engineering (ICCCE), 2018Co-Authors: Nurul Arfah Che Mustapha, Sheroz Khan, A. H. M. Zahirul Alam, Amelia Wong AzmanAbstract:This paper presents a single supply differential Capacitive sensing technique. Focus is on the analysis of the excitation frequency dependency to the circuit network. First, the theory and derivation of the differential Capacitive Sensor under test is presented and elaborated. Then, simulation results are shown for comparison. Test was carried out using frequency from 40 k Hz up to 400 k Hz. Results have shown good linearity of R-squared value 0.99957 at 200 k Hz. This Capacitive Sensor is also suitable to be used for energy harvesting application.