Telecommunications – Transmitter – Diversity
Reexamination Certificate
2006-11-21
2006-11-21
Vo, Nguyen T. (Department: 2618)
Telecommunications
Transmitter
Diversity
C455S276100, C455S575300
Reexamination Certificate
active
07139533
ABSTRACT:
Embodiments of the present invention are directed to a mobile communication device that includes a plurality of antennas for receiving signals and is configured to reduce the deterioration of the antennas characteristics. In specific embodiments the mobile device is a folding type mobile communication terminal having the structure that permits easy opening or closing and enabling stabilization of the antenna characteristic. In one embodiment, a mobile communication device comprises a plurality of antennas configured to receive signals; a signal processing circuit configured to combine and process the signals received from the plurality of antennas; and a phase alignment circuit provided for each of the plurality of antennas and configured to subject a phase of a signal received by each of the plurality of antennas to an in-phase adjustment.
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Chiba Yutaka
Hoshino Kazunori
Katagishi Makoto
Kumekawa Masanobu
Takaki Taku
Hitachi , Ltd.
Townsend and Townsend / and Crew LLP
Vo Nguyen T.
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