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Integrated Front-end Analog Circuits for MEMS Sensors: -in Ultrasound Imaging and Optical Grating Based Microphone - Couverture souple
Présentation de l'éditeur
Micro-scaling makes MEMS sense capacitance small in a CMUT array element for intravascular ultrasound imaging. Smaller sensors lead to a lower active-to- parasitic ratio and thus, degrades sensitivity. Here capacitive feedback charge amplifier is shown as an alternative approach to resistive feedback amplifier. Capacitive feedback charge amplifier provides high sensitivity, small area, low distortion and power saving. This approach of charge amplifiers is also suitable in capacitive microphones where it provides low power and high sensitivity. In the case of biomimetic microphone structure, optical detection overcomes capacitive detection's thermal noise issues. Also with micro-scaling, optical detection overcomes the increased parasitics without any sensitivity degradation, unlike capacitive detection. For hearing aids, along with sensitivity, battery life is another challenge. We propose the use of 1- bit front-end sigma-delta ADC for overall improved hearing aid power efficiency. Front-end interface based on envelope detection and synchronous detection have also been designed. Circuit techniques are used for maximizing signal handling with low supplies.
Biographie de l'auteur
Muhammad Shakeel Qureshi received his PhD in electrical & computer engineering from Georgia Institute of Technology in 2009. He has worked at Texas Instruments, National Semiconductor and Intel. Currently he is a Post-Doc analog circuit designer and researcher at Hewlett Packard Labs. He is a member of Eta Kappa Nu and Sigma Xi Honor Society.
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- ÉditeurLAP Lambert Academic Publishing
- Date d'édition2010
- ISBN 10 3843367736
- ISBN 13 9783843367738
- ReliureBroché
- Nombre de pages120
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Integrated Front-end Analog Circuits for MEMS Sensors: -in Ultrasound Imaging and Optical Grating Based Microphone
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ISBN 13 : 9783843367738
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Integrated Frontend Analog Circuits for MEMS Sensors in Ultrasound Imaging and Optical Grating Based Microphone
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Integrated Front-end Analog Circuits for MEMS Sensors
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Integrated Frontend Analog Circuits for MEMS Sensors in Ultrasound Imaging and Optical Grating Based Microphone
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ISBN 13 : 9783843367738
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Integrated Front-end Analog Circuits for MEMS Sensors
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Taschenbuch. Etat : Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Micro-scaling makes MEMS sense capacitance small in a CMUT array element for intravascular ultrasound imaging. Smaller sensors lead to a lower active-to- parasitic ratio and thus, degrades sensitivity. Here capacitive feedback charge amplifier is shown as an alternative approach to resistive feedback amplifier. Capacitive feedback charge amplifier provides high sensitivity, small area, low distortion and power saving. This approach of charge amplifiers is also suitable in capacitive microphones where it provides low power and high sensitivity. In the case of biomimetic microphone structure, optical detection overcomes capacitive detection's thermal noise issues. Also with micro-scaling, optical detection overcomes the increased parasitics without any sensitivity degradation, unlike capacitive detection. For hearing aids, along with sensitivity, battery life is another challenge. We propose the use of 1- bit front-end sigma-delta ADC for overall improved hearing aid power efficiency. Front-end interface based on envelope detection and synchronous detection have also been designed. Circuit techniques are used for maximizing signal handling with low supplies. 120 pp. Englisch. N° de réf. du vendeur 9783843367738
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Integrated Front-end Analog Circuits for MEMS Sensors : -in Ultrasound Imaging and Optical Grating Based Microphone
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LAP LAMBERT Academic Publishing, 2010
ISBN 10 : 3843367736
ISBN 13 : 9783843367738
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Integrated Front-end Analog Circuits for MEMS Sensors : in Ultrasound Imaging and Optical Grating Based Microphone
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LAP LAMBERT Academic Publishing, 2010
ISBN 10 : 3843367736
ISBN 13 : 9783843367738
Neuf
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Taschenbuch. Etat : Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Micro-scaling makes MEMS sense capacitance small in a CMUT array element for intravascular ultrasound imaging. Smaller sensors lead to a lower active-to- parasitic ratio and thus, degrades sensitivity. Here capacitive feedback charge amplifier is shown as an alternative approach to resistive feedback amplifier. Capacitive feedback charge amplifier provides high sensitivity, small area, low distortion and power saving. This approach of charge amplifiers is also suitable in capacitive microphones where it provides low power and high sensitivity. In the case of biomimetic microphone structure, optical detection overcomes capacitive detection's thermal noise issues. Also with micro-scaling, optical detection overcomes the increased parasitics without any sensitivity degradation, unlike capacitive detection. For hearing aids, along with sensitivity, battery life is another challenge. We propose the use of 1- bit front-end sigma-delta ADC for overall improved hearing aid power efficiency. Front-end interface based on envelope detection and synchronous detection have also been designed. Circuit techniques are used for maximizing signal handling with low supplies. N° de réf. du vendeur 9783843367738
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Integrated Front-end Analog Circuits for MEMS Sensors
Edité par
LAP LAMBERT Academic Publishing, 2010
ISBN 10 : 3843367736
ISBN 13 : 9783843367738
Neuf
Couverture souple
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Etat : New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Qureshi MuhammadMuhammad Shakeel Qureshi received his PhD in electrical & computer engineering from Georgia Institute of Technology in 2009. He has worked at Texas Instruments, National Semiconductor and Intel. Currently he is a P. N° de réf. du vendeur 5466708
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Integrated Front-end Analog Circuits for MEMS Sensors: -in Ultrasound Imaging and Optical Grating Based Microphone
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LAP LAMBERT Academic Publishing, 2010
ISBN 10 : 3843367736
ISBN 13 : 9783843367738
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