ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,349, issued on May 6, was assigned to RF360 Singapore Pte. Ltd. (Singapore).
"Bulk acoustic wave devices with sandwich electrodes for higher resonant frequencies, and related fabrication methods" was invented by Juha Sakari Ella (Salo, Finland) and Edgar Schmidhammer (Stein an der Traun, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bulk acoustic wave (BAW) device comprises a piezoelectric layer disposed between a first electrode layer and a sandwich electrode. The sandwich electrode includes a first layer of a first material having a first acoustic impedance and a second layer of a second material having a second acoustic impedance that ...