Fujitsu :Diodes that convert microwaves into electrical power: European Solid State Device (ESSDERC)
-Realization of sensor network without power supply-
Fujitsu, Kenichi Kawaguchi / Professor Suhara, Tokyo Metropolitan Univ
In the JST Strategic Creation Research Promotion Project, developed a “highly sensitive nanowire backward diode rectifier that can convert weak microwaves into electric power”.
Current technology: ‘Nanowire backward diode’
This time, we developed “Nanowire Backward Diode” for the first time in the world.
Delivers over 10 times the sensitivity of conventional ‘Schottky barrier diodes’.
Prior art: ‘Schottky barrier diode’
Conventional rectifiers cannot convert weak radio waves into electric power due to rectification characteristics and element size at minute voltages.
There was a need for “high sensitivity diodes with microwatts (μW) or less” that are applicable to many environmental radio waves.
Battery-less sensor:
The full-scale IoT era is here.
The advent of high-sensitivity diodes that can convert weak radio waves (microwaves) around you into electric power.
Diodes, integrated optimization design, optimization of power supply control: sensor-less battery by environmental radio wave power generation
Mobile phone base station: Useful for environmental radio power generation that generates power from the emitted environmental radio waves.
The results of this research will be announced on September 26, 2019 (Poland Daylight Time) at the international conference “European Solid-State Device Research Conference (ESSDERC)” in Krakow, Poland.