Dielectric filter having electrodes jump-coupled to a...

Details Dielectric filter having electrodes jump-coupled to a... Dielectric filter having electrodes jump-coupled to a...

2008-06-04

2010-02-02

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S134000, C333S185000, C333S202000

Reexamination Certificate

active

07656254

ABSTRACT:
A chip device having a ground electrode and a plurality of top-surface electrodes on a plate-like dielectric substrate. Two of the top-surface electrodes are connected to the ground electrode via respective short-circuit side-surface electrodes to form quarter wavelength resonant lines. A third top-surface electrode is provided between the two top-surface electrodes and both ends thereof are opened to form a half wavelength resonant line. The two top-surface electrodes each have a parallel portion arranged near and in parallel to the third top-surface electrode and a flexion that curves from the parallel portion, extends toward the remaining of the two top-surface electrodes, and is jump-coupled to the remaining of the two top-surface electrodes. The short-circuit side-surface electrodes are jump-coupled to each other, like the flexions.

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PCT/JP2007/062753 International Search Report dated Sep. 28, 2007.
PCT/JP2007/062753 Written Opinion dated Sep. 28, 2007.

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