Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1993-05-27
1994-12-13
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333204, H01P 1203
Patent
active
053732715
ABSTRACT:
A tri-plate type dielectric filter having a dielectric substrate, a plurality of resonator electrodes embedded in the substrate, and coupling electrodes formed within the dielectric substrate for capacitively connecting the resonator electrodes to provide capacitors between adjacent resonator electrodes. The resonator electrodes may take the form of parallel elongate strips each providing a stripline type .lambda./4 or .lambda./2 TEM mode resonance circuit. One end of each strip is exposed at an outer surface of the substrate. This end of each strip is trimmed to adjust the resonance frequency of the resonance circuit.
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Hirai Takami
Yano Shinsuke
Ham Seungsook
NGK Insulators Ltd.
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