NTT DOCOMO, in partnership with AGC Inc. and Ericsson, has developed an antenna embedded in synthetic fused silica glass for transmitting and receiving 28 GHz 5G radio signals.
The antenna was used to verify 28 GHz 5G mobile communication with downlink speeds averaging 1.3 Gbps within a 100-meter range and reaching a maximum of 3.8 Gbps at 400 MHz.
The verification tests, which used a vehicle fitted with multiple antennas and traveling about 30 km/h, were conducted in the Sumida area of Tokyo between April 22 and May 28.
https://www.nttdocomo.co.jp/english/info/media_center/pr/2019/0529_00.html
