US Patent Issued to National Tsing Hua University on May 19 for "High-directivity directional coupler" (Taiwanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,640, issued on May 19, was assigned to National Tsing Hua University (Hsinchu, Taiwan).

"High-directivity directional coupler" was invented by Tsun-Hsu Chang (Hsinchu, Taiwan), Tsung-Chi Yu (Hsinchu, Taiwan) and Cheng-Hsuan Chan (Hsinchu, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A high-directivity directional coupler includes a mainline metal segment and at least one coupling metal segment. The mainline metal segment is an equal-width transmission or delay line with an impedance the same as a system characteristic impedance and the at least one coupling metal segment comprises a continuous coupling line. The coupling line includes two me...