US Patent Issued on June 23 for "Bulk acoustic wave filter for second harmonic residue reduction" (Canadian, American Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,665,570, issued on June 23.

"Bulk acoustic wave filter for second harmonic residue reduction" was invented by Zhaogeng Xu (Cambridge, Canada), Li Chen (Irvine, Calif.) and Yiliu Wang (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of this disclosure relate to acoustic wave filters with second harmonic emission suppression. In an embodiment, an acoustic wave filter includes a first bulk acoustic wave resonator, a second bulk acoustic wave resonator in anti-parallel with the first bulk acoustic wave resonator, and a passive impedance element in series with the first bulk acoustic wave resonator. The passive impedance element can red...