ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,562,713, issued on Feb. 24, was assigned to Qorvo US Inc. (Greensboro, N.C.).

"Acoustic resonator structure with improved temperature coefficient of frequency (TCF)" was invented by Yazid Yusuf (Orlando, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An acoustic resonator includes a first piezoelectric layer, a second piezoelectric layer, and a coupler layer between the first piezoelectric layer and the second piezoelectric layer. The first piezoelectric layer and the second piezoelectric layer have a same polarity. The coupler layer includes a first metal layer, a second metal layer, a dielectric layer between the first metal layer and the second ...