An FPGA-Based Ultrasound Imaging System Using Capacitive Micromachined Ultrasonic Transducers

作者：Wong Lawrence L P^*; Chen Albert I; Logan Andrew S; Yeow John T W

来源：IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2012, 59(7): 1513-1520.

DOI：10.1109/TUFFC.2012.2351

We report the design and experimental results of a field-programmable gate array (FPGA)-based real-time ultrasound imaging system that uses a 16-element phased-array capacitive micromachined ultrasonic transducer fabricated using a fusion bonding process. The imaging system consists of the transducer, discrete analog components situated on a custom-made circuit board, the FPGA, and a monitor. The FPGA program consists of five functional blocks: a main counter, transmit and receive beamformer, receive signal pre-processing, envelope detection, and display. No dedicated digital signal processor or personal computer is required for the imaging system. An experiment is carried out to obtain the sector B-scan of a 4-wire target. The ultrasound imaging system demonstrates the possibility of an integrated system-in-a-package solution.

• 出版日期2012-7