Circuits on miniaturized ultrasound imaging system-on-a-chip: a review

Lim, Jaemyung

doi:10.1007/s13534-022-00228-w

Cited by 3 publications

(2 citation statements)

References 54 publications

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“…In unipolar HV pulsers, the T/R switch may be implemented using a single HV MOS transistor. 5,14 In bipolar HV pulsers, however, a T/R switch typically requires several HV devices so as to provide bidirectional isolation between the output and ground. [15][16][17] To address this issue, the T/R switch can be embedded inside the RTZ stage of the pulser using a lowvoltage (LV) MOS transistor.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, integration of the T/R switch inside the pulser increases the chip area even further. In unipolar HV pulsers, the T/R switch may be implemented using a single HV MOS transistor 5,14 . In bipolar HV pulsers, however, a T/R switch typically requires several HV devices so as to provide bidirectional isolation between the output and ground 15–17 .…”

Section: Introductionmentioning

confidence: 99%

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A compact bipolar high‐voltage pulser with a novel transistor gate–source protection scheme for ultrasound imaging applications

Ehsanipour,

Shoaei

2023

Circuit Theory & Apps

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SummaryIn this article, a compact integrated high‐voltage (HV) pulser is presented, which can serve as an actuator in area‐limited medical ultrasound imaging applications. The proposed HV pulser is capable of producing bipolar return‐to‐zero (RTZ) HV pulses with a maximum peak‐to‐peak amplitude of 60 V. A novel RTZ stage including a new transistor gate–source protection scheme is used in this work, resulting in a reduced die area by enabling the use of an embedded transmit/receive (T/R) switch and obviating the need for a separate T/R switch. The proposed HV pulser also incorporates programmable delay elements by which the RTZ time can be controlled. By selecting the minimum allowed value of delay, the pulser is able to generate square‐wave HV pulses as well. Designed and implemented in a 0.18‐μm HV Bipolar‐CMOS‐DMOS (BCD) technology, the pulser occupies a layout area of 0.455 mm2. The function of the proposed design has been verified using post‐layout simulations when driving a 220‐pF capacitor in parallel with a 1‐kΩ resistor load. The simulation results indicate that the pulser consumes an average power of 14.85 mW when producing 2‐MHz, three‐cycle HV pulses with a pulse repetition frequency (PRF) of 5 kHz.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A compact bipolar high‐voltage pulser with a novel transistor gate–source protection scheme for ultrasound imaging applications

Ehsanipour,

Shoaei

2023

Circuit Theory & Apps

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An Emerging Era: Conformable Ultrasound Electronics

Zhang,

Du,

Kim

et al. 2023

Advanced Materials

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Conformable electronics are regarded as the next generation of personal healthcare monitoring and remote diagnosis devices. In recent years, piezoelectric based conformable ultrasound electronics (cUSE) have been intensively studied due to their unique capabilities, including no‐radiative monitoring, soft tissue imaging, deep signal decoding, wireless power transfer, portability, and compatibility. This review provides a comprehensive understanding of cUSE for use in biomedical and healthcare monitoring systems and a summary of their recent advancements. Following an introduction to the fundamentals of piezoelectrics and ultrasound transducers, the critical parameters for transducer design are discussed. Next, five types of cUSE with their advantages and limitations are highlighted, and the fabrication of cUSE using advanced technologies is discussed. In addition, the working function, acoustic performance, and accomplishments in various applications are thoroughly summarized. We note that application considerations must be given to the tradeoffs between material selection, manufacturing processes, acoustic performance, mechanical integrity, and the entire integrated system. Finally, we highlight current challenges and directions for the development of cUSE, and provide research flow as the roadmap for future research. In conclusion, these advances in the fields of piezoelectric materials, ultrasound transducers, and conformable electronics spark an emerging era of biomedicine and personal healthcare.This article is protected by copyright. All rights reserved

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Emerging ultrasonic bioelectronics for personalized healthcare

Jiang

2023

Progress in Materials Science

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Circuits on miniaturized ultrasound imaging system-on-a-chip: a review

Cited by 3 publications

References 54 publications

A compact bipolar high‐voltage pulser with a novel transistor gate–source protection scheme for ultrasound imaging applications

A compact bipolar high‐voltage pulser with a novel transistor gate–source protection scheme for ultrasound imaging applications

An Emerging Era: Conformable Ultrasound Electronics

Emerging ultrasonic bioelectronics for personalized healthcare

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