Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2006-01-10
2006-01-10
Dinh, Trinh V. (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S7000MS, C343S846000, C455S090300
Reexamination Certificate
active
06985111
ABSTRACT:
A printed circuit board with reduced noise effects and without the need to increase the distance between a noise source and a wireless communication board. The circuit board includes multilayer structural conductive layers having a first conductive plane connected to power supply potential and a second conductive plane connected to ground potential. The first and second conductive planes are formed such that an electric field generated by a potential difference between the first conductive plane and the second conductive plane is concentrated on one side of one of the first conductive plane and the second conductive plane. The conductive plane associated with the concentrated electric field and the wireless communication board are on different sides relative to the conductive plane that is not associated with the concentrated electric field.
REFERENCES:
patent: 6469670 (2002-10-01), Ito
patent: 6784843 (2004-08-01), Onaka et al.
patent: 2004/0125018 (2004-07-01), Ramasamy et al.
patent: 10-268988 (1998-10-01), None
Hara Tsutomu
Kashiwagi Kenji
Matsumoto Takashi
Osaka Hideki
Yokota Hitoshi
Dinh Trinh V.
Hitachi , Ltd.
Ho Binh Van
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