Patent ID: 11901600
Assignee: ACE TECHNOLOGIES CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of manufacturing a ceramic waveguide filter, comprising:
in order to define a plurality of resonant cavities in a ceramic block, forming a plurality of through partition walls dividing sections of the ceramic block according to a pre-designated pattern;
forming a plurality of resonant recesses in the sections of the plurality of resonant cavities divided by the through partition walls;
forming a respective metal layer on a surface of each of the plurality of through partition walls;
forming input/output interfaces for inputting and outputting signals in two of the plurality of resonant cavities among the plurality of resonant cavities;
forming a capacitive coupling structure on one surface of the ceramic block and spaced apart from the plurality of through partition walls between resonant cavities; and
forming the metal layer on an inside of the capacitive coupling structure,
wherein the plurality of through partition walls pass through the ceramic block and divides the sections of the ceramic block such that the plurality of resonant cavities having the plurality of resonant recesses are defined,
wherein the plurality of resonant cavities are spaced apart from each other to filter a pre-designated frequency band while being sequentially coupled with adjacent resonant cavities through coupling windows formed by the plurality of through partition walls in response to the signal input through the input/output interfaces, and
wherein at least one resonant cavity from among the plurality of resonant cavities is disposed adjacent another one resonant cavity from among the plurality of resonant cavities, thereby allowing cross coupling to occur.