Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1998-02-17
1999-11-30
Ham, Seungsook
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333206, 333203, H01P 512, H01P 1205
Patent
active
059949783
ABSTRACT:
A partially interdigitated combline ceramic filter is provided. The filter has a filter body with top, bottom, and side surfaces, and metallized through-holes defining quarter-wavelength resonators. The filter also has a metallization layer and at least one combline section with at least one transmission zero between the quarter-wavelength resonators. The filter also has at least one interdigital section and a coupling means between the quarter-wavelength resonators of the interdigital section. The filter also has first and second input-output pads. The partially interdigitated combline ceramic filter has the best attributes of both interdigital filter designs and combline filter designs to provide a filter which has transmission zeros, superior stopband rejection, and good harmonic performance in a small, compact, low-profile package that does not require external shielding.
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CTS Corporation
Ham Seungsook
LandOfFree
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