US Patent Issued to RF360 Singapore on Dec. 23 for "Bulk acoustic wave (BAW) device with oppositely polarized piezoelectric layers for higher order resonance and method of manufacture" (German Inventors)

ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,459, issued on Dec. 23, was assigned to RF360 Singapore Pte. Ltd. (Singapore).

"Bulk acoustic wave (BAW) device with oppositely polarized piezoelectric layers for higher order resonance and method of manufacture" was invented by Maximilian Schiek (Puchheim, Germany), Willi Aigner (Moosinning, Germany) and Christian Ceranski (Munich).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bulk acoustic wave (BAW) device comprises a layer stack including first and second electrodes, a first piezoelectric layer between the electrodes, and a second piezoelectric layer between the first piezoelectric layer and the second electrode. A polarization of a crystal st...