Results 1 to 10 of about 339,544 (173)
A Doherty Power Amplifier for Ultrasound Instrumentation [PDF]
Sensors, 2023 The ultrasound instrumentation uses linear power amplifiers with low power efficiency, generating unwanted heat and resulting in the deterioration of the echo signal quality of measured targets.
Hojong Choi
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Power Amplifier Design for Ultrasound Applications [PDF]
Micromachines, 2023 A design analysis of the power amplifiers developed for ultrasound applications was conducted because ultrasound applications require different types of power amplifiers, which are one of the most critical electronic components in ultrasound systems.
Hojong Choi
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Design of Inner Matching Three-Stage High-Power Doherty Power Amplifier Based on GaN HEMT Model [PDF]
MicromachinesThis paper introduces the structure and characteristics of an internal-matching high-power Doherty power amplifier based on GaN HEMT devices with 0.25 μm process platforms from the Nanjing Electronic Devices Institute.
Renyi Li +3 more
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An Inverse Class-E Power Amplifier for Ultrasound Transducer [PDF]
Sensors, 2023 An inverse Class-E power amplifier was designed for an ultrasound transducer. The proposed inverse Class-E power amplifier can be useful because of the low series inductance values used in the output matching network that helps to reduce signal ...
Hojong Choi
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A 28-36 GHz Optimized CMOS Distributed Doherty Power Amplifier with A New Wideband Power Divider Structure [PDF]
Journal of Electrical and Computer Engineering Innovations, 2020 Background and Objectives: In this paper, a new design strategy was proposed in order to enhance bandwidth and efficiency of power amplifier.Methods: To realize the introduced design strategy, a power amplifier was designed using TSMC CMOS 0.18um ...
M. Mirzajani Darestani +2 more
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Design of a Load Modulated Balanced Amplifier with a Two-Stage Control Power Amplifier [PDF]
Journal of Electromagnetic Engineering and Science, 2023 While an ideal Doherty power amplifier has a linear response, the load modulated balanced amplifier (LMBA) has a compressive response under ideal conditions.
Sagini E. Mochumbe, Youngoo Yang
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Energies, 2023 Similar to a Doherty power amplifier (DPA), a sequential power amplifier (SPA) is mainly composed of a main amplifier, an auxiliary amplifier and a combiner.
Keyuan Yang +5 more
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A High-Voltage and Low-Noise Power Amplifier for Driving Piezoelectric Stack Actuators
Sensors, 2020 In this paper, based on the principles of general operational amplifiers, a high-voltage operational amplifier is developed. Considering the influences of piezoelectric stack actuators on the circuit, a novel structure using the high-voltage operational ...
Lisong Xu +3 more
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Penguat Jembatan dengan Untai Pembalik Fase
Elektrika, 2022 The maximum output voltage of the audio amplifier is limited to the magnitude of the power supply voltage of the power transistor or the operational amplifier on the final amplifier. This limits the maximum power of the audio amplifier output. The way to
Budihardja Murtianta, Erlina Sari
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Design of an Electromagnetic Band Gap Shield for a Ku-Band VSAT Transmitter Power Amplifier [PDF]
فصلنامه علوم و فناوری فضایی, 2021 In this paper, a shielding box is designed for a Ku-band VSAT transmitter power amplifier based on an electromagnetic band gap structure. The proposed structure, is a bed of nails on the inner surface of the top wall of the box.
Mahmoud Talafi Noghani, Peiman Aliparast
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