Ultrasonic imaging front-end design for CMUT: A 3-level 30Vpp pulse-shaping pulser with improved efficiency and a noise-optimized receiver

Author(s)
Chen, Kailiang; Chandrakasan, Anantha P.; Sodini, Charles G.
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Abstract
A four-channel analog front-end (AFE) transceiver chip for medical ultrasound imaging is demonstrated. The high voltage transmitter uses a 3-level pulse-shaping technique to deliver over 50% more acoustic power for the same power dissipation, compared to traditional methods. The design requires minimum off-chip components and is scalable for more channels. The receiver is implemented with a transimpedance amplifier (TIA) topology and is optimized for noise, bandwidth and power dissipation. Based on both acoustic and electrical measurements, we demonstrate the Transmitter (Tx) efficiency improvement, Tx beamformation and the pulse-echo response, revealing the system's full functionality.
Date issued
2012-11
URI
http://hdl.handle.net/1721.1/93891
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Proceedings of the 2012 IEEE Asian Solid State Circuits Conference (A-SSCC)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Chen, Kailiang, Anantha P. Chandrakasan, and Charles G. Sodini. “Ultrasonic Imaging Front-End Design for CMUT: A 3-Level 30Vpp Pulse-Shaping Pulser with Improved Efficiency and a Noise-Optimized Receiver.” 2012 IEEE Asian Solid State Circuits Conference (A-SSCC) (December 2012).
Version: Author's final manuscript
ISBN
978-1-4673-2771-8
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