Welcome to Masayoshi Tanaka  Website  

Research activities of wireless & satellite communications in the following laboratories.
-  College of Industrial Technology, Nihon University, 
     Department of Electrical and Electronic
     Engineering.​
-  NTT Electrical Communications Laboratories.
  

Spatially superposed highly efficient M-ary modulation ( 16QAM, 32APSK, 64QAM )

Microwave spatial-power combining technology -Spatial superpositon-

Battery-less wireless communication system for rescuing disaster victims

Energy harvesting battery-less wireless communications for IoT.

Multiport amplifier (MPA) and mobile satellite communications system

Nonlinear analysis of high power amplifier (HPA) -Unwanted emissions of multi-carrier transmitter in spurious domain -

Signal processing technology with FPGA in wireless communications

Battery-less ubiquitous wireless communications

Detection of earthquake presursor using electromagnetic wave propagation fluctuation.

Research and development of communication payload (transponders) for commercial and engineering test satellites

Economical ubiquitous wireless communications system

Nonlinear distortion analysis and compensation

Multimedia satellite communications system