ArticleSensors (Basel, Switzerland)2021
A New Approach to Power Efficiency Improvement of Ultrasonic Transmitters via a Dynamic Bias Technique.
Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Development of an Artificial Soft Solid Gel Using Gelatin Material for High-Quality Ultrasound Diagnosis.Diagnostics (Basel, Switzerland) · 2024Article
- 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
- Fisheye lens design for solar-powered mobile ultrasound devices.Technology and health care : official journal of the European Society for Engineering and Medicine · 2022Article
- 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
- Polymer-Peptide Modified Gold Nanorods to Improve Cell Conjugation and Cell labelling for Stem Cells Photoacoustic Imaging.Diagnostics (Basel, Switzerland) · 2021Article
- Comparison of Direct Intersection and Sonogram Methods for Acoustic Indoor Localization of Persons.Sensors (Basel, Switzerland) · 2021Article
- Low-Cost Ultrasonic Range Improvements for an Assistive Device.Sensors (Basel, Switzerland) · 2021Article
Corrections and comments
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Authors and funding
2 authors.
Funding
Abstract
To obtain a high-quality signal from an ultrasound system through the transmitter, it is necessary to achieve an appropriate operating point of the power amplifier in the ultrasonic transmitter by applying high static bias voltage. However, the power amplifier needs to be operated at low bias voltage, because a power amplifier operating at high bias voltage may consume a large amount of power and increase the temperature of the active devices, worsening the signal characteristics of the ultrasound systems. Therefore, we propose a new method of increasing the bias voltage for a specific period to solve this problem by reducing the output signal distortion of the power amplifier and decreasing the load on the active device. To compare the performance of the proposed method, we measured and compared the signals of the amplifier with the proposed technique and the amplifier only. Notably, improvement was achieved with 11.1% of the power added efficiency and 3.23% of the total harmonic distortion (THD). Additionally, the echo signal generated by the ultrasonic transducer was improved by 2.73 dB of amplitude and 0.028% of THD under the conditions of an input signal of 10 mW. Therefore, the proposed method could be useful for improving ultrasonic transmitter performance using the developed technique.
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Registered trials
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