Filter element and method for manufacturing the same

Details Filter element and method for manufacturing the same Filter element and method for manufacturing the same

2008-02-26

2009-12-08

Lee, Benny (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S204000, C333S219000

Reexamination Certificate

active

07629867

ABSTRACT:
A filter element includes a flat dielectric substrate, a ground electrode on a back main surface of the dielectric substrate, resonant lines each having a shorting end in the vicinity of a border between a side of the dielectric substrate and the ground electrode and extending from the side to a front main surface of the dielectric substrate. The resonant lines and the ground electrode constitute strip-line resonators. In any of the strip-line resonators, the line width of the resonant-line side portion is different from the line width of the resonant-line main-surface portion.

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Official communication issued in the International Application No. PCT/JP2007/063989, mailed on Aug. 21, 2007.

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