Balun device, balance filter device, and wireless...

Details Balun device, balance filter device, and wireless... Balun device, balance filter device, and wireless...

2007-08-14

2007-08-14

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S185000

Reexamination Certificate

active

11049049

ABSTRACT:
A balun device, a balance filter device, and a wireless communication apparatus are provided. An intermediate electrode is disposed between a balanced resonance electrode and a GND electrode. More specifically, the balun device includes a pair of GND electrodes formed on a dielectric layer, an unbalanced resonance electrode formed on a dielectric layer, and a balanced resonance electrode formed on a dielectric layer. The unbalanced resonance electrode and the balanced resonance electrode are disposed between the pair of GND electrodes by laminating the corresponding dielectric layers. The intermediate electrode is interposed between the balanced resonance electrode and the GND electrode positioned close to the balanced resonance electrode.

REFERENCES:
patent: 6788164 (2004-09-01), Maekawa et al.
patent: 6828881 (2004-12-01), Mizutani et al.
patent: 6850127 (2005-02-01), Sakakura et al.
patent: 2003-087008 (2003-03-01), None

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