ArticleMicromachines2019
Development of a Class-C Power Amplifier with Diode Expander Architecture for Point-of-Care Ultrasound Systems.
Article in Micromachines, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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Who cites it
16 citing papers in PubMed, 20 citations in OpenAlex.
- Harmonic-Reduced Bias Circuit for Ultrasound Transducers.Sensors (Basel, Switzerland) · 2023Article
- An Inverse Class-E Power Amplifier for Ultrasound Transducer.Sensors (Basel, Switzerland) · 2023Article
- A Doherty Power Amplifier for Ultrasound Instrumentation.Sensors (Basel, Switzerland) · 2023Article
- Novel dual-resistor-diode limiter circuit structures for high-voltage reliable ultrasound receiver systems.Technology and health care : official journal of the European Society for Engineering and Medicine · 2022Article
- Fisheye lens design for solar-powered mobile ultrasound devices.Technology and health care : official journal of the European Society for Engineering and Medicine · 2022Article
- A New Approach to Power Efficiency Improvement of Ultrasonic Transmitters via a Dynamic Bias Technique.Sensors (Basel, Switzerland) · 2021Article
- Novel Bandwidth Expander Supported Power Amplifier for Wideband Ultrasound Transducer Devices.Sensors (Basel, Switzerland) · 2021Article
- High-efficiency high-voltage class F amplifier for high-frequency wireless ultrasound systems.PloS one · 2021Article
- Development of a low-cost six-axis alignment instrument for flexible 2D and 3D ultrasonic probes.Technology and health care : official journal of the European Society for Engineering and Medicine · 2021Article
- Inter-Stage Output Voltage Amplitude Improvement Circuit Integrated with Class-B Transmit Voltage Amplifier for Mobile Ultrasound Machines.Sensors (Basel, Switzerland) · 2020Article
- Post-Voltage-Boost Circuit-Supported Single-Ended Class-B Amplifier for Piezoelectric Transducer Applications.Sensors (Basel, Switzerland) · 2020Article
- Wireless Ultrasound Surgical System with Enhanced Power and Amplitude Performances.Sensors (Basel, Switzerland) · 2020Article
- A Class-J Power Amplifier Implementation for Ultrasound Device Applications.Sensors (Basel, Switzerland) · 2020Article
- Wide Bandwidth Class-S Power Amplifiers for Ultrasonic Devices.Sensors (Basel, Switzerland) · 2020Article
- A Macro Lens-Based Optical System Design for Phototherapeutic Instrumentation.Sensors (Basel, Switzerland) · 2019Article
- Stacked Transistor Bias Circuit of Class-B Amplifier for Portable Ultrasound Systems.Sensors (Basel, Switzerland) · 2019Article
Corrections and comments
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Authors and funding
1 author at 1 institution in 1 country.
Funding
Abstract
Point-of-care ultrasound systems are widely used in ambulances and emergency rooms. However, the excessive heat generated from ultrasound transmitters has an impact on the implementation of piezoelectric transducer elements and on battery consumption, thereby affecting the system's sensitivity and resolution. Non-linear power amplifiers, such as class-C amplifiers, could substitute linear power amplifiers, such as class-A amplifiers, which are currently used in point-of-care ultrasound systems. However, class-C power amplifiers generate less output power, resulting in a reduction of system sensitivity. To overcome this issue, we propose a new diode expander architecture dedicated to power amplifiers to reduce the effects of sinusoidal pulses toward the power supply. Thus, the proposed architecture could increase the input pulse amplitudes applied to the main transistors in the power amplifiers, hence increasing the output voltage of such amplifiers. To verify the proposed concept, pulse-echo responses from an ultrasonic transducer were tested with the developed class-C power amplifier using a resistor divider and the designed diode expander architecture. The peak-to-peak amplitude of the echo signals of the ultrasonic transducers when using a class-C power amplifier with a diode expander architecture (2.98 V
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.