Researcher

Group Web Site

http://www.wit.riec.tohoku.ac.jp/en/

Research Activities

Wireless communication systems, such as cellular phones, have offered mobile voice/mail services to us. Nowadays, they begin to offer mobile internet services which handle high capacity photo/motion data. In order to enjoy freedom from wired lines, small size, light weight, long battery life terminals have been required. For the next generation wireless systems which include terrestrial / satellite communications, dependable connectivity and green wireless information technologies (IT) will be the key issues.

Advanced Wireless Information Technology(Prof. Suematsu)

Research topics

• Broadband wireless on-chip transceivers for 6G
• Millimeter-wave/submillimeter-wave IC’s
• Direct digital RF signal processing
• Millimeter-wave DBF antenna modules for SATCOM systems
• High-power RF circuits using diamond semiconductor

Toward the realization of a ubiquitous and broad-band wireless network, we are actively engaged in the research work on dependable and low power consumption advanced wireless IT. We cover the whole technical fields from the lower to higher layers, i.e., signal processing, RF/Mixed signal device, antenna, and wireless system technologies based on our hardware technologies.
As the wireless hardware studies on signal processing, RF/Mixed signal device and antenna technologies, we are developing RF/Millimeter-wave RF CMOS IC’s, antenna integrated 3-dimensional system in package (SiP) transceiver modules, digital/RF mixed signal IC’s. In particular, we are focusing on the research and development of direct digital RF transceivers. This technology replaces RF analog circuit blocks with digital circuits as much as possible, minimizing the size of the transceiver and enabling software-defined radio operation.
As the wireless system studies, we are focusing on next generation Japanese Low Earth Orbit (LEO) constellation satellite communication system and terrestrial 6G distributed antenna system.

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