ALEXANDRIA, Va., June 4 -- United States Patent no. 12,321,078, issued on June 3, was assigned to GIST(Gwangju Institute of Science and Technology) (Gwangju, South Korea).

"Array antenna capable of shifting phase of light" was invented by Nan Ei Yu (Gwangju, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an array antenna which is capable of shifting a phase of light. According to one aspect of the present exemplary embodiment, an optical phase shifting array antenna includes: a receiving unit configured to distribute input light to a plurality of antenna element waveguides; a phase shifting unit configured to shift a phase of light propagated to each antenna element waveguide by appl...