Cmos控制的Ghz超声阻抗成像仪

2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII) Pub Date : 2019-06-23 DOI:10.1109/TRANSDUCERS.2019.8808493

M. Abdelmejeed, J. Kuo, Adarsh Ravi, A. Lal

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引用次数: 5

摘要

本文演示了一种CMOS驱动的1- 2ghz超声成像仪，该成像仪可以单片集成在单片机中，并在1.5V电池电压下工作。演示了由定制的180nm CMOS RF电路驱动的单个AlN换能器像素的脉冲发射/接收操作。像素传感器进行二维扫描，以254dpi的分辨率对指纹和树叶进行成像。基于单像素成像时间，估计帧率为500 fps，为13.6 μJ/帧。干橡胶与空气的回波信号比为3.3:1，湿橡胶为1.5:1。本工作为实现单芯片GHz超声成像仪提供了一条途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Cmos Controlled Ghz Ultrasonic Impedance Imager

This paper presents a demonstration of CMOS driven 1-2 GHz ultrasonic imager that can be monolithically integrated in a single-chip and operate at 1.5V battery voltages. The pulse transmit/receive operation of a single AlN transducer pixel driven by custom 180nm CMOS RF circuits is demonstrated. The pixel transducer is scanned in two dimensions to image fingerprints and leaves with 254 dpi resolution. Based on a single pixel imaging time, frame rate is estimated to be 500 fps at 13.6 μJ/frame. The contrast of returned signal between rubber and air is 3.3:1 for dry rubber and 1.5:1 for wet rubber. This work shows a pathway towards single chip GHz ultrasonic imager.

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来源期刊

2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)

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