US 12,334,912 B2
Radio frequency multiplexer
Sebastian Bertl, Ampermoching (DE)
Assigned to RF360 Singapore Pte. Ltd., Republic Plaza (SG)
Filed by RF360 Singapore Pte. Ltd., Singapore (SG)
Filed on Apr. 19, 2024, as Appl. No. 18/640,362.
Application 18/640,362 is a continuation of application No. 17/054,693, granted, now 11,984,875, previously published as PCT/EP2019/061436, filed on May 3, 2019.
Claims priority of application No. 102018111428.1 (DE), filed on May 14, 2018.
Prior Publication US 2024/0267031 A1, Aug. 8, 2024
Int. Cl. H03H 9/02 (2006.01); H03H 9/145 (2006.01); H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01)
CPC H03H 9/72 (2013.01) [H03H 9/02543 (2013.01); H03H 9/145 (2013.01); H03H 9/25 (2013.01); H03H 9/6483 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio frequency multiplexer, comprising:
a send circuit and a receive circuit each forming a portion of a filter circuit;
a first port coupled to the send circuit and the receive circuit;
a second port coupled to the send circuit; and
a third port coupled to the receive circuit, wherein:
the send circuit comprises a first resonator and the receive circuit comprises a second resonator, the first resonator and the second resonator being disposed on a first die;
the send circuit comprises additional resonators coupled in series and disposed on a second die different from the first die, the first resonator and the additional resonators being included in a series path of the send circuit;
the send circuit comprises a plurality of parallel paths connected to the series path, another resonator being included in each of the plurality of parallel paths of the send circuit and disposed on the first die; and
the plurality of parallel paths are coupled between a plurality of different nodes in the series paths and a ground potential node, respectively, part of the plurality of different nodes being located between adjacent resonators of the additional resonators.