Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Reexamination Certificate
2005-03-08
2005-03-08
Le, Dinh T. (Department: 2816)
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
C333S203000, C333S219000
Reexamination Certificate
active
06864762
ABSTRACT:
A bandpass filter disposed on a substrate includes one pair of ring Each of the ring resonators includes a pattern inductor, a resonance capacitor connected in parallel with the pattern inductor, and an input/output terminal connected with the pattern inductor via a coupling capacitor. The pattern inductors are connected with an impedance varying device, whereby the bandpass filter is capable of frequency adjustments.
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Hirano Hitoshi
Kani Nobuhiro
Nagai Hiroshi
Nagata Naomi
Yahata Norihiro
Le Dinh T.
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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