| 摘要 |
<p>A ceramic filter (100) is disclosed. The filter (100) has a filter body comprising a dielectric material having a plurality of surfaces with each surface having a plurality of metallized through holes extending through the dielectric material defining a first series of resonators (102) in a first plane and a plurality of second metallized through holes in a different plane and extending transversely with relation to the first, defining a second series of resonators (104). The filter (100) also has a metallization layer substantially coating all surfaces of the filter (100) with the exception that a portion of the surface surrounding each resonator is left unmetallized, and a coupling structure (108) for coupling electrical signals into and out of filter (100).</p> |
