ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,550, issued on March 17, was assigned to Skyworks Solutions Inc. (Irvine, Calif.).
"Bulk acoustic wave filter circuit having phase cancelling circuit" was invented by Yoshiaki Ando (Yokosuka, Japan) and Hiroyuki Nakamura (Osaka-Fu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects and examples provide improvement in the attenuation level near the passband within the stopband of the bandpass-type filter using a ladder-type circuit. In one example the ladder-type circuit is formed from bulk acoustic wave resonators. A loop circuit is connected between two distinct points on a signal path extending from an input to an output of the ladder-t...