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Delft University of Technology

1. Saha, A. (author). Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography.

Degree: 2013, Delft University of Technology

The motivation behind this thesis is that cardio-vascular diseases claim the highest number of lives each year globally. In order to enhance the accuracy in diagnosis, construction of 3D images of the heart is required. From these images, precise information can be obtained regarding the 3D anatomy of the heart and its functioning. Trans-Esophageal Echocardiography (TEE) is a promising technique to achieve this kind of precision in diagnosis. The objective of my thesis is to perform optimization at the system and circuit level, in order to improve power-efficiency and area-efficiency of the front-end receiver electronics. This electronic circuitry is integrated at the tip of a miniature TEE probe, which will be inserted through the esophagus close to the heart of the patient for diagnosis (via a gastroscopic tube). The signal processing chain of the receiver electronics consists of a Low Noise Amplifier (LNA), a Micro-Beamformer that performs delay and sum operation, and a Time Gain Compensation (TGC) amplifier. A novel low-power high-dynamic-range micro-beamformer is designed in TSMC 0.18 ┬Ám CMOS technology. The dynamic range is enhanced substantially compared to a previous implementation. This has been achieved by employing an Offset Calibration Loop (OCL). The proposed design is power-efficient, such that the total power consumption is almost a factor of 5 lower compared to the state-of-the-art design. The increase in thermal noise level is marginal (6.5%) after incorporating the OCL.

Microelectronics

Microelectronics & Computer Engineering

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: Pertijs, M.A.P. (mentor), Yu, Z. (mentor).

Subjects/Keywords: Offset Calibration loop; Micro-Beamformer; switched-capacitor circuits; ultrasound; Auto-Zeroing loop; dynamic range; delay line; time-gain-compensation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Saha, A. (. (2013). Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:d34e597c-dc60-4ef6-ace7-edca22bbcac4

Chicago Manual of Style (16th Edition):

Saha, A (author). “Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography.” 2013. Masters Thesis, Delft University of Technology. Accessed October 19, 2020. http://resolver.tudelft.nl/uuid:d34e597c-dc60-4ef6-ace7-edca22bbcac4.

MLA Handbook (7th Edition):

Saha, A (author). “Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography.” 2013. Web. 19 Oct 2020.

Vancouver:

Saha A(. Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2020 Oct 19]. Available from: http://resolver.tudelft.nl/uuid:d34e597c-dc60-4ef6-ace7-edca22bbcac4.

Council of Science Editors:

Saha A(. Design of Front-End Receiver Electronics for 3D Trans-Esophageal Echocardiography. [Masters Thesis]. Delft University of Technology; 2013. Available from: http://resolver.tudelft.nl/uuid:d34e597c-dc60-4ef6-ace7-edca22bbcac4

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