32-Channel transmit beamformer with high timing resolution for high-frequency ultrasound imaging systems

Duo Sheng, Sheng Min Chan, Chun Wei Lin, Chih Chung Huang

Research output: Contribution to journalArticle

Abstract

This paper presents a 32-channel high timing resolution transmit-beamforming circuit for use in high-frequency ultrasound imaging systems. Conventional transmit-beamforming circuits are typically implemented using field-programmable gate array (FPGA) chips. However, it is difficult for FPGAs to provide high timing resolution to meet the beamforming requirements of high-frequency ultrasound imaging systems. The proposed transmit-beamforming design can generate stable and suitable delays to excite 32-channel array transducer elements without variations in the process, voltage, and temperature. In addition, the proposed low-complexity architecture can maintain the duty cycle of long prorogation signals with low hardware cost to meet the timing requirements of a large channel number array transducer. The proposed designed transmit beamformer uses 0.18-µm CMOS technology for a 30-MHz high-frequency linear array, and the simulation results show that the proposed transmit-beamforming application-specific integrated circuit can achieve a maximum time delay of 619.5 ns with a time resolution of 617 ps.

Original languageEnglish
Pages (from-to)54701
Number of pages1
JournalReview of Scientific Instruments
Volume91
Issue number5
DOIs
Publication statusPublished - 2020 May 1

All Science Journal Classification (ASJC) codes

  • Instrumentation

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