An internal filter based on low-temperature co-fired ceramic technology
By embedding the filter within a low-temperature co-fired ceramic substrate using an embedded filter structure, three-dimensional integration is achieved, solving the problems of large size and insufficient reliability in existing technologies, and improving electrical performance and reliability.
CN122137366APending Publication Date: 2026-06-02SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUZHOU R&D CENT OF NO 214 RES INST OF CHINA NORTH IND GRP
- Filing Date
- 2026-02-09
- Publication Date
- 2026-06-02
Smart Images
Figure CN122137366A_ABST
Abstract
This invention discloses an embedded filter based on low-temperature co-fired ceramic technology, belonging to the field of microwave circuit technology. The embedded filter includes: a low-temperature co-fired ceramic substrate comprising multiple stacked low-temperature co-fired ceramic dielectrics; and a filter structure embedded within the low-temperature co-fired ceramic substrate, achieving signal transmission and coupling through metal conductors and metal vias between the multiple layers of low-temperature co-fired ceramic dielectrics. The filter structure includes multiple resonators interconnected by metal conductors and metal vias, a coupling structure, and input and output electrodes. The coupling structure includes magnetic coupling and electrical coupling structures. This embedded filter can reduce the number of surface-mount components, shorten signal paths, and improve electrical performance and reliability.
Need to check novelty before this filing date? Find Prior Art