ANTENNA DEVICE
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United States of America Patent
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app pub date -
Jan 8, 2016
filing date -
Jul 31, 2013
priority date (Note) -
Abandoned
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Abstract
An antenna device includes an antenna conductor on windshield glass, a feeding point having adjacent first and second feeding parts on the antenna conductor, and an auxiliary conductor including electrically connected horizontal and vertical conductors. The antenna conductor is adjacent to a connecting part between the horizontal and vertical conductors, and has a semi-loop shape with a cutout part in a loop-shape. The feeding point is located along the horizontal conductor, and the cutout part is located opposite from the horizontal conductor with respect to a horizontal line passing through a center point of a region surrounded by a semi-loop element, and opposite from the vertical conductor with respect to a vertical line passing through the center point. A length of a first element forming a part of the antenna conductor is 0.2λg or greater and 0.35λg or less, where λg denotes a wavelength on the windshield glass.
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