Ceramic waveguide filter including a plurality of resonant cavities coupled by a capacitive coupling structure and a method for manufacture
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United States of America Patent
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Feb 13, 2024
Grant Date -
Sep 9, 2021
app pub date -
May 25, 2021
filing date -
Nov 26, 2018
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Abstract
A ceramic waveguide filter comprises a plurality of resonant cavities defined by a plurality of through partition walls formed in a single ceramic block to divide sections of the ceramic block according to a pre-designated pattern, a plurality of resonant recesses formed in the sections of the plurality of resonant cavities divided by the through partition walls, a metal layer formed on an inner surface of each of the plurality of through partition walls, and input/output interfaces formed in two resonant cavities inputting and outputting signals among the plurality of resonant cavities.
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