IEEE Transactions on Circuits and Systems I: Regular Papers 2024年
This paper proposes the load-independent (LI) class-E frequency multiplier along with a unified circuit analysis method with the LI class-E amplifier. A circuit-parameter determination strategy is presented to achieve LI operation and maximum powe...
This paper presents an analysis and design of a load-independent (LI) series resonant (SR) power amplifier with constant current (CC) output, along with its application for an MHz wireless power transfer (WPT) system. A novel inverse Class E power...
Yutaro Komiyama Ayano Komanaka Hiroaki Ota Yuki Ito Taichi Mishima Takeshi Uematsu Akihiro Konishi Wenqi Zhu Kien Nguyen Hiroo Sekiya
IEEE Access 12 23043-23056 2024年
This paper presents an analysis and design of the load-independent (LI) high-frequency magnetic resonant wireless power transfer (MR-WPT) system with robustness against load variations and coil misalignments. It is clarified from the analysis that...
Cognitive radio networks' evolution hinges significantly on the use of automatic modulation classification (AMC). However, existing research reveals limitations in attaining high AMC accuracy due to ineffective feature extraction from signals. To ...
IEICE Transactions on Communications E106–B(12) 1402-1410 2023年12月
This paper presents an analysis-based design method for designing the class-Φ22 wireless power transfer (WPT) system, taking its subsystems as a whole into account. By using the proposed design method, it is possible to derive accurate design valu...
This paper proposes a load-independent wireless power transfer (WPT) system for multiple receivers with fixed coupling coils. The proposed WPT system consists of the single load-independent class-E inverter with LCC filters and multiple receivers ...
To address the communication congestion and high energy consumption issues in IoT networks, prior research has proposed a distributed information processing system called WiBIC. As an exploratory step towards implementing the basic functionalities...
Yutaro Komiyama Wenqi Zhu Kien Nguyen Hiroo Sekiya
Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC 2023-March 490-494 2023年
This paper proposes a load-independent (LI) constant-current (CC)/zero-current-switching (ZCS) inverter with a series resonant (SR) filter. The conditions for realizing the LI operation are derived through the analysis of the proposed inverter. Th...
Proceedings - IEEE International Symposium on Circuits and Systems 2023-May 2023年
This study proposes a self-tuned series resonant power oscillator capable of load-independent operation. The proposed power oscillator has a self-tuning feedback loop that provides a gate-driving voltage with a constant phase shift and amplitude. ...
Proceedings - IEEE International Symposium on Circuits and Systems 2023-May 2023年
This paper presents a simulator-based design-optimization software for high-frequency power-electronics circuits, which consists of the heuristic algorithm, magnetic-component design tool, and commercial simulator, SPICE. Because we can use the SP...
大学院国際学術研究院