ALEXANDRIA, Va., July 28 -- United States Patent no. 12,695,524, issued on July 28, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"Method for determining quantity of passive intermodulation source and related device" was invented by Zhi Yang (Shenzhen, China), Qiang Huo (Moscow), Yanqing Zhu (Xi'an, China) and Zhiqiang Zou (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for determining a quantity of passive inter-modulation sources. A quantity of passive inter-modulation sources of a multi-antenna device is obtained. An interference signal that is excited by a sounding signal and that is from a passive inter-modulation source is received. Singular value decomposition is p...