US 11,942,923 B2
RF filter with increased bandwidth and filter component
Marc Esquius Morote, Munich (DE)
Assigned to RF360 Singapore Pte. Ltd., Republic Plaza (SG)
Appl. No. 17/434,372
Filed by RF360 SINGAPORE PTE. LTD., Singapore (SG)
PCT Filed Mar. 16, 2020, PCT No. PCT/EP2020/057042
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2020/187820, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 10 2019 106 670.0 (DE), filed on Mar. 15, 2019.
Prior Publication US 2022/0149816 A1, May 12, 2022
Int. Cl. H03H 9/56 (2006.01); H03H 7/09 (2006.01); H03H 9/54 (2006.01); H03H 9/60 (2006.01)
CPC H03H 9/566 (2013.01) [H03H 9/60 (2013.01); H03H 7/09 (2013.01); H03H 9/542 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A half lattice filter, comprising:
an input port, an output port and a signal path between the input port and the output port,
a first segment in the signal path,
a parallel branch that is electrically connected in parallel to the first segment of the signal path,
a first electro acoustic resonator in the first segment,
an impedance element in the parallel branch, and
a phase shifter having a first and second terminal, the phase shifter electrically connected in the parallel branch in series to the impedance element,
wherein the phase shifter comprises two inductively coupled inductance elements and a first capacitance element electrically connected to at least one of the first terminal and the second terminal.