Invention Grant
- Patent Title: Multilayered filter device
-
Application No.: US17362140Application Date: 2021-06-29
-
Publication No.: US11522259B2Publication Date: 2022-12-06
- Inventor: Yuta Ashida , Noriyuki Hirabayashi , Shigemitsu Tomaki
- Applicant: TDK CORPORATION
- Applicant Address: JP Tokyo
- Assignee: TDK CORPORATION
- Current Assignee: TDK CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JPJP2019-050314 20190318
- Main IPC: H01P1/203
- IPC: H01P1/203 ; H03H7/01 ; H01P1/205 ; H03H1/00

Abstract:
A multilayered filter device includes a multilayer stack, a band pass filter, a first band elimination filter, and a second band elimination filter. The band pass filter and the first and second band elimination filters are each constructed using the multilayer stack. The band pass filter includes a plurality of first resonators with open ends. Each band elimination filter includes a connection path, and a second resonator coupled to the connection path. The connection path includes an impedance transformer. The second resonator includes a conductor line constituting a distributed constant line.
Public/Granted literature
- US20210328317A1 MULTILAYERED FILTER DEVICE Public/Granted day:2021-10-21
Information query