Composite antenna device
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United States of America Patent
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Apr 16, 2013
Grant Date -
Aug 4, 2011
app pub date -
Aug 30, 2010
filing date -
Feb 1, 2010
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There is provided a composite antenna device for responding to waves in a plurality of radio frequency bands, including: a sheet of conductor plate; a first antenna provided on the sheet of conductor plate for responding to a linearly-polarized wave in at least one radio frequency band; and a second antenna provided on the sheet of conductor plate for responding to a circularly-polarized wave in a radio frequency band that is different from the at least one radio frequency band, wherein the first antenna has a ground portion, the second antenna is formed in an area in the ground portion, and each of the first antenna and the second antenna has a feeding point.
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