US 12,224,735 B2
Diplexer using decoupled transversely-excited film bulk acoustic resonators
Sean McHugh, Santa Barbara, CA (US)
Assigned to Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Dec. 3, 2021, as Appl. No. 17/542,284.
Claims priority of provisional application 63/168,095, filed on Mar. 30, 2021.
Prior Publication US 2022/0321098 A1, Oct. 6, 2022
Int. Cl. H03H 9/56 (2006.01); H03H 9/02 (2006.01); H03H 9/13 (2006.01); H03H 9/17 (2006.01); H03H 9/70 (2006.01)
CPC H03H 9/564 (2013.01) [H03H 9/02015 (2013.01); H03H 9/13 (2013.01); H03H 9/171 (2013.01); H03H 9/706 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A diplexer comprising:
a first chip comprising series resonators of a high band filter;
a second chip comprising shunt resonators of the high band filter and series resonators of a low band filters; and
a third chip comprising shunt resonators of the low band filter, wherein
the series resonators and the shunt resonators of the high band filter are decoupled transversely-excited film bulk acoustic resonators (DXBARs), and
the series resonators and the shunt resonators of the low band filter are transversely-excited film bulk acoustic resonators (XBARs).