US 12,068,738 B2
Configurable micro-acoustic RF filter
Edgar Schmidhammer, Munich (DE)
Assigned to RF360 Singapore Pte. Ltd., Singapore (SG)
Appl. No. 17/421,706
Filed by RF360 SINGAPORE PTE. LTD, Singapore (SG)
PCT Filed Jan. 21, 2020, PCT No. PCT/EP2020/051437
§ 371(c)(1), (2) Date Jul. 8, 2021,
PCT Pub. No. WO2020/152183, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 10 2019 101 888.9 (DE), filed on Jan. 25, 2019.
Prior Publication US 2022/0085794 A1, Mar. 17, 2022
Int. Cl. H03H 9/54 (2006.01); H03H 9/60 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/542 (2013.01) [H03H 9/605 (2013.01); H03H 9/6403 (2013.01); H03H 9/6483 (2013.01); H03H 2210/036 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A configurable micro-acoustic RF filter, comprising:
a first port and a second port;
a first filter subsection including at least one serially connected micro-acoustic resonator and at least one shunt connected micro-acoustic resonator, the first filter subsection coupled to the first port;
a switch having a first terminal connected to the first filter subsection, a second terminal and a third terminal;
a second filter subsection including at least one serially connected micro-acoustic resonator and at least one shunt connected micro-acoustic resonator, the second filter subsection coupled to the third terminal of the switch and to the second port; and
an additional switch having a first terminal coupled to the second port, a second terminal coupled to the second terminal of the switch, and a third terminal coupled to the second filter subsection.