The National Institute of Information and Communications Technology (NICT) is developing technology to measure the “electrical constants of living tissue,” which is necessary for precise estimation of radio wave exposure to the human body. NICT had published a database of electric constants of biological tissues.
It will be available for viewing and download on the web page, and the number of biological tissue types that make up the database will be the largest in the world.
It will also be the only database in the world that includes electrical constants measured in biological tissue in the frequency band above 20 GHz.
With regard to human exposure to radio waves, the results using the electrical constant data of skin tissue, etc. included in the database were evaluated as the most reliable, and are included in the new guidelines for protection of human exposure to radio waves. It is adopted as the direct basis for the level of protection.
By combining the database with a numerical human body model, we can accurately estimate the human exposure to radio waves in the 28 GHz band of 5G systems and other radio frequencies used in modern wireless communication systems (higher than the frequencies of traditional mobile phones). simulation becomes possible.