US Patent Issued to RF360 Singapore on May 20 for "Saw multiplexer with SWA filters having different bandwidths due to dielectric layer between IDT and piezoelectric layer adjusting acoupling factor" (German Inventor)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,822, issued on May 20, was assigned to RF360 Singapore Pte. Ltd. (Republic Plaza, Singapore).

"Saw multiplexer with SWA filters having different bandwidths due to dielectric layer between IDT and piezoelectric layer adjusting acoupling factor" was invented by Peter Laaser (Bavaria, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The SAW filter chip comprises a plurality of SAW filters (1, 2), wherein at least one of the several electric filters is a first-type electric filter (1) comprising at least one first-type SAW-resonator (10). The first-type SAW-resonator comprises a piezoelectric layer (11), an intermediate layer (12) on the piezoelec...