ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,375, issued on March 18, was assigned to Telefonaktiebolaget LM Ericsson (publ) (Stockholm).
"AU and RU having CWG filters, and BS having the AU or RU" was invented by Yongbin Liu (Beijing), Juandi Song (Beijing), Yuhua Xiao (Beijing) and Ying Li (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "An antenna unit, a radio unit, and a base station are disclosed. The antenna unit or the radio unit includes a plurality of filters, each having a respective radio frequency passband. At least one first filter is a CWG filter. The first filter is coupled to a second filter through a T-junction formed on an antenna board or a radio mother board."
The ...