豊橋技術科学大学

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Tamura, Masaya

Affiliation Department of Electrical and Electronic Information Engineering
Title Professor
Fields of Research Wireless power transfer / Microwave circuits / High frequency circuit
Degree Doctor of Informatics (Kyoto Univ.)
Academic Societies IEEE / IEICE
E-mail tamura@ee
Please append ".tut.ac.jp" to the end of the address above.
Laboratory website URL http://www.comm.ee.tut.ac.jp/em/index.html
Researcher information URL(researchmap) Researcher information

Research

電磁波は身の回りに非常に多く存在しています。情報伝達に使われる電波だけでなく、太陽光や身体から発する熱も電磁波の一種です。本研究室では特にマイクロ波・ミリ波技術をもとに、海底探査機や水中ロボット、建物や工場内の危険な場所におけるヘルスモニタリング用センサへのワイヤレス電力情報伝送を研究しています。また、情報通信技術を応用して動画や画像など大容量のデータを伝送するための次世代ワイヤレス通信回路も開発しており、安全で安心な真のユビキタス社会の実現を目指しています。

Theme1:Wireless Power Transfer under Water

Overview
Power station under seawater

Autonomous underwater vehicles are desired to charge battery and communicate information under water in order to improve operation efficiency. We have an ambitious goal of developing the wireless power and data transfer system for operation underwater, focusing on the capacitive coupling with a simple structure and low leakage of field. So as to require a high power charging in this case, we are also investigating an elucidation of high-frequency property in fresh water and seawater.

[1] M. Tamura, K. Murai, M. Matsumoto, “Design of Conductive Coupler for Underwater Wireless Power and Data Transfer,” IEEE Trans. Microwave Theory and Techniques, vol. 69, no. 1, pp.1161-1175, Jan. 2021.
[2] M. Tamura, Y. Naka, K. Murai, T. Nakata,“Design of a Capacitive Wireless Power Transfer System for Operation in Fresh Water,” IEEE Trans. Microwave Theory and Techniques, vol. 66, no. 12, pp.5873-5884, Dec. 2018.
[3] Y. Naka, K. Yamamoto, T. Nakata, M. Tamura, “Improvement in Efficiency of Underwater Wireless Power Transfer with Electric Coupling,” IEICE Trans. Electron, vol. E100-C, no. 10, pp.850-857, Oct. 2017.

Keywords

Underwater wireless power transfer, high power RF generator

Theme2:Next-Generation Wireless RF Circuits

Overview
Base station for next-generation network

Various methods in order to achieve high-speed and large-capacity wireless communications are developed such as Massive-MIMO, In-band full-duplex, and OAM. We aim to develop the RF circuits that are key technologies to realize these methods. As we image the application to a wide target range from portable devices to base station in small cell, we are developing value-added solutions such as high tunability and high power capability corresponding to the targets.

[1] K. Yoshihara, M. Tamura, Y. Miyaji, A. Alphones, “Dual Band SIW Cavity-Backed Crossed-Slot Antenna,” in Proc. 2019 Asia-Pacific Microwave Conference, Singapore, Dec. 2019, pp.1775-1778.
[2] K. Satoh, M. Tamura,“Filter using cylindrical quadruple mode SIW resonator,” IEICE Electronics Express, ELEX, vol.15, No.9, pp.1-6, #20180295, Apr. 2018.
[3] M. Tamura, S. Tomida, K. Ichinose,“Design and Analysis of Multi-Mode Stripline Resonator and Its Application to Bandpass Filter,” IEICE Trans. Electron, vol. E101-C, no. 3, pp.151-160, Mar. 2018.

Keywords

RF circuits, RF filter, Circuit design for signal processing

Theme3:Wireless Harness

Overview
Battery-less wireless sensor system

Numerous sensors are installed in various facilities and equipment for the purpose to support safe and secure life. In particular, power supply by wireless power transfer is expected for the sensors in dangerous places such as infrastructures in factory and power plant. We are developing a unique system with the pseudo-shielded space, which makes it possible to confine the electromagnetic field in the space and communicate with the sensors outside the space.

[1] S. Nimura, D. Furusu, M. Tamura,“Improvement in Power Transmission Efficiency for Cavity Resonance-Enabled Wireless Power Transfer by Utilizing Probes With Variable Reactance,” IEEE Trans. Microwave Theory and Techniques, vol. 68, no. 7, pp.2734-2744, Jul. 2020.
[2] D. Furusu, M. Tamura,“Design of Capacitive Planar Power Transmitter and Receiver for Cavity Resonance enabled Wireless Power Transfer,” IEEE Microwave and Wireless Components Letters, vol. 29, no. 8, pp.566-568, Aug. 2019.
[3] I. Takano, D. Furusu, Y. Watanabe, M. Tamura, “Cavity Resonator Wireless Power Transfer in an Enclosed Space with Scatterers utilizing Metal Mesh,” IEICE Trans. Electron, vol. E100-C, no. 10, pp.841-849, Oct. 2017.

Keywords

Wireless power transfer, Battery-less sensor system, Wireless harness

Title of class

Electric Circuit 1 / Signal Processing / Microwave Circuits / Advanced Communication Systems 2


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