ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,542,340, issued on Feb. 3, was assigned to QuantumZ Inc. (Kaohsiung, Taiwan).
"24GHz band-pass 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 24 GHz band-pass filter includes a step impedance resonator, a first U-shape feeding portion, a second U-shape feeding portion, short-circuit stubs and open-circuit stubs. The step impedance resonator includes a first main portion, a second main portion, and a connection portion for connecting the main portions to each other. The first main portion and t...