公开(公告)号：US20200255324A1

公开(公告)日：2020-08-13

申请号：US16860107

申请日：2020-04-28

Applicant: AGC Inc.

Inventor： Nobutaka KIDERA ,  Kazuya SASAKI ,  Yasutomi IWAHASHI

IPC: C03C3/06 ,  C03C4/16 ,  H01P1/208 ,  H01P3/12

Abstract: A silica glass for a radio-frequency device has an OH group concentration being less than or equal to 300 wtppm; an FQ value being higher than or equal to 90,000 GHz at a frequency of higher than or equal to 25 GHz and lower than or equal to 30 GHz; and a slope being greater than or equal to 1,000 in a case where the FQ value is approximated as a linear function of the frequency in a frequency band of higher than or equal to 20 GHz and lower than or equal to 100 GHz.