Antenna device and signal receiving method

Details Antenna device and signal receiving method Antenna device and signal receiving method

2008-08-19

2011-10-11

Owens, Douglas W (Department: 2821)

Communications: radio wave antennas

Antennas

Having an appreciable wave length dimension

C343S793000, C343S810000

Reexamination Certificate

active

08035571

ABSTRACT:
An example antenna device includes a conductive ground plane and first and second antenna elements connected to the conductive ground plane through first and second feeding points, respectively. Directivities of the first and second antenna elements are arranged to be approximately perpendicular to each other. A phase adjusting circuit is configured to provide a phase difference of approximately 180 degrees between first and second received signals by the first and second antenna elements, respectively and a combining circuit is configured to combine the first and second received signals having a phase difference of approximately 180 degrees therebetween to obtain a combined signal. A radio unit is configured to process the combined signal.

REFERENCES:
patent: 7400863 (2008-07-01), Kobayashi et al.
patent: 2001/0035844 (2001-11-01), Reece et al.
patent: 2002/0084942 (2002-07-01), Tsai et al.
patent: 2002/0084943 (2002-07-01), Tsai et al.
patent: 2004/0106381 (2004-06-01), Tiller
patent: 2008/0278329 (2008-11-01), Kim et al.
patent: 2009/0102706 (2009-04-01), Goldblatt et al.
patent: 0 987 887 (2000-03-01), None
patent: 2001-028561 (2001-01-01), None

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