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Title: A monolithic capacitive transducer for electrical capacitance tomography
Authors: Cui, Jie
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 2010
Source: Cui, J. (2010). A monolithic capacitive transducer for electrical capacitance tomography. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: This thesis presents a new high-resolution, fully-integrated monolithic capacitive transducer for portable electrical capacitance tomography (ECT) applications. This mixed-signal chip comprises a new switched-capacitor (SC) capacitance-to-voltage (CV) convertor with a stray immunity, a new offset-reduced chopping differential difference amplifier (DDA) for post amplification and a digital control module for generating a series of control clocks. The CV convertor, being a critical building block, adopts correlated double sampling (CDS) to minimize the 1/f noise and cancel the dc offset arising from the dedicated op-amp having a high power-bandwidth efficiency. Moreover, it realizes a new instrumentation-based methodology through additional auto-zero (AZ) operations to sample and cancel the front-end circuit level switch errors.
Description: 150 p.
DOI: 10.32657/10356/46984
Rights: Nanyang Technological University
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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