====== Man-Chia_Chen ======
{{wiki:Man-chia.JPG?160|Man-chia.JPG}}
BESS, Electical Engineering, National Chiao-Tung University, 2008
M.S, Electrical Engineering, Stanford University, 2011
Admitted to Ph.D. Candidacy: 2010-2011
**Research**: //Front-end Electronics for Medical Ultrasound Imaging// **
**Tremendous work has been done to carry conventional 2D ultrasonic imaging system to a portable 3D imaging system. In order to deal with high complexity of signal interface while achieving miniaturization, functional blocks need to be optimized in a system level perspective. Photoacoustic imaging, which can be considered as a received-only ultrasonic system, is the driver application in this research.
Conventional front-ends include only low-noise amplifiers and analog delay lines while the rest of the blocks sit in a back-end processer and connects to the front-end through a cable. However, as the number of channels increases, interconnects between the transducer and CMOS chip become the bottleneck. State-of-the-art has demonstrated the technique of flip-chip bonding between the 2D 32x32 Capacitive Micromachined Ultrasonic Transducer (CMUT) array and IC [[1]]. On the other hand, a single-chip solution for the front-end circuitry of a high-channel count has been shown in recent publication [[2]]. Therefore, this research focuses on the realization of pitch-matched electronics which enable the integration of front-end circuitry for 2D array and maintain the capability of direct assembly with a CMUT array.
[[1]] Anshuman Bhuyan, et al., “Integrated Circuits for Volumetric Ultrasound Imaging With 2-D CMUT Arrays” IEEE Trans. Biomed. Circuits Syst. VOL. 7, NO. 6, DEC. 2013
[[2]] Ji-Yong Um, et al. “An Analog-Digital-Hybrid Single-Chip RX Beamformer with Non-Uniform Sampling for 2D-CMUT Ultrasound Imaging to Achieve Wide Dynamic Range of Delay and Small Chip Area” ISSCC 2014
**Email**: [[mailto:manchiac@stanford.edu|manchiac AT stanford DOT edu]]