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Sensors (Basel, Switzerland)|January 18, 2020
Wide Bandwidth Class-S Power Amplifiers for Ultrasonic DevicesKiheum You, Hojong ChoiSensors (Basel, Switzerland)|November 5, 2020
Inter-Stage Output Voltage Amplitude Improvement Circuit Integrated with Class-B Transmit Voltage Amplifier for Mobile Ultrasound MachinesKiheum You, Hojong ChoiSensors (Basel, Switzerland)|September 24, 2020
Post-Voltage-Boost Circuit-Supported Single-Ended Class-B Amplifier for Piezoelectric Transducer ApplicationsJungsuk Kim, Kiheum You, Hojong ChoiSensors (Basel, Switzerland)|April 23, 2020
A Class-J Power Amplifier Implementation for Ultrasound Device ApplicationsKiheum You, Seung-Hwan Kim, Hojong ChoiSensors (Basel, Switzerland)|July 31, 2020
Wireless Ultrasound Surgical System with Enhanced Power and Amplitude PerformancesJungsuk Kim, Kiheum You, Sun-Ho Choe, et al.Sensors (Basel, Switzerland)|December 5, 2019
Stacked Transistor Bias Circuit of Class-B Amplifier for Portable Ultrasound SystemsHojong ChoiTechnology and Health Care : Official Journal of the European Society for Engineering and Medicine|February 6, 2022
Novel dual-resistor-diode limiter circuit structures for high-voltage reliable ultrasound receiver systemsHojong ChoiSensors (Basel, Switzerland)|February 24, 2019
Class-C Linearized Amplifier for Portable Ultrasound InstrumentsHojong ChoiSensors (Basel, Switzerland)|January 16, 2019
Prelinearized Class-B Power Amplifier for Piezoelectric Transducers and Portable Ultrasound SystemsHojong ChoiSensors (Basel, Switzerland)|April 13, 2023
An Inverse Class-E Power Amplifier for Ultrasound TransducerHojong ChoiPageof 7