ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,476,603, issued on Nov. 18, was assigned to QuantumZ Inc. (Kaohsiung, Taiwan).
"Balun filter" was invented by Kun Yen Tu (Kaohsiung, Taiwan), Meng-Hua Tsai (Kaohsiung, Taiwan), Wei Ting Lee (Kaohsiung, Taiwan) and Sin-Siang Wang (Kaohsiung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Balun filter is disposed on a circuit board, and includes a first wire, a second wire, a third wire and a ground plane. The first wire has one end for disposing a first feeding point. The second wire has one end for disposing a second feeding point. The third wire is configured for disposing a third feeding point and includes a first coupling section, a second c...