ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,504,504, issued on Dec. 23, was assigned to Calterah Semiconductor Technology (Shanghai) Co. Ltd. (Shanghai).
"Phase shifting system, RF chip, and radar sensor" was invented by Tao Liu (Shanghai), Jiashu Chen (Shanghai), Zhengdong Liu (Shanghai) and Wenting Zhou (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "A phase shifting system, a chip, and a radar sensor are provided. A respective transmission line phase-shifting unit is configured to receive at least one phase shifting control signal and to shift a phase of a RF signal by a first phase or a second phase. Each transmission line phase-shifting unit includes a first group of transmission li...