MULTIBAND ANTENNA APPARATUS
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United States of America Patent
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app pub date -
Dec 28, 2012
filing date -
Dec 29, 2011
priority date (Note) -
Abandoned
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Abstract
Disclosed is a multiband antenna apparatus. According to one embodiment of the present invention, a multiband antenna apparatus includes: an antenna radiator connected to each of a feeder pad and a ground pad on a non-ground surface of a mainboard of a wireless communication device and including a first radiator for transmitting and receiving a first frequency band and a second radiator for transmitting and receiving a second frequency band; a frequency adjusting element formed on the non-grounded surface and interconnecting the ground pad and the ground of the mainboard; and a switch unit that is formed on the non-ground surface and electrically disconnects or opens the ground pad and the ground of the mainboard in accordance with an input switching control signal. The resonant frequency of the antenna radiator shifts by the switching operation of the switching unit.
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