ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,388,409, issued on Aug. 12, was assigned to KYOCERA Corp. (Kyoto, Japan).
"Composite filter and communication device" was invented by Tetsuya Kishino (Nara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A splitter simultaneously inputs two signals having different frequencies within a transmission band to a transmission terminal. A transmission filter system and a reception filter system that are connected to an antenna terminal share a first hybrid coupler. Two transmission filters and a second hybrid coupler are located between the first hybrid coupler and the transmission terminal. A reception filter is located between the first hybrid coupler...