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

📋 论文概要

该论文提出了一种用于2D-CMUT超声成像的模拟-数字混合单芯片接收波束成形器，采用非均匀采样技术，解决了传统全数字波束成形器功耗高、面积大的问题。

💡 主要创新点

• 提出模拟-数字混合架构，结合模拟延迟和数字处理，降低功耗和芯片面积。
• 采用非均匀采样技术，减少数据量并保持波束成形精度。
• 实现单芯片集成，适用于2D-CMUT阵列，提高系统集成度。

🏷 关键词

📄 原文摘要

Min-Kyun Chae1, Jongkeun Song2, Baehyung Kim2, Seunghun Lee2, Jihoon Bang2, Youngil Kim2, Kyungil Cho2, Byungsub Kim1, Jae-Yoon Sim1, Hong-June Park1 Pohang University of Science and Technology, Pohang, Korea, Samsung Advanced Institute of Technology, Yongin, Korea 1 2 Ultrasound imaging is widely used for medical diagnosis, because it is harmless to the human body and has real-time processing capability. Usually the focusing (beamforming) operation is performed for both TX and RX. The RX focusing is performed by an RX beamformer [1-5], which consists of delay elements and adders. Nowadays, digital beamformers (DBF) are mostly used for conventional ultrasound imaging because of high SNR. Recently, 2D ultrasound transducers have been introduced for 3D imaging. Since the 2D transducer has a huge number of transducer elements (e.g., 9216 for a 72×128 array), it cannot use DBF because of the huge number of required ADCs and wires inside the probe

👥 作者与机构

Ji-Yong Um1, Eun-Woo Song1, Yoon-Jee Kim1, Seong-Eun Cho1,