Patent ID: 11863160
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. The method of claim 1, further comprising:
connecting a third sub-filter in parallel between the first port and the second port, wherein connecting the third sub-filter comprises:
bonding to a substrate a back surface of a piezoelectric plate having front and back surfaces, portions of the piezoelectric plate forming a plurality of diaphragms spanning respective cavities in the substrate; and
forming a conductor pattern on the front surface, the conductor pattern including a plurality of interdigital transducers (IDTs) of a respective plurality of resonators, interleaved fingers of each IDT disposed on a respective diaphragm of the plurality of diaphragms, wherein
a thickness of the piezoelectric plate portion of the third sub-filter is different from a thickness of the piezoelectric plate portion of the first and portion of the second sub-filters.