Planar antenna and radar apparatus
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United States of America Patent
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Aug 29, 2017
Issued Date -
N/A
app pub date -
Nov 6, 2014
filing date -
Nov 13, 2013
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Abstract
The planar antenna has a dielectric substrate; an antenna main body portion including first and second antenna elements on first and second sides, respectively, of the dielectric substrate and functioning as a balanced antenna; a signal line portion including first and second feed lines on the first and second sides, respectively, and a coplanar line on the first side and formed by a signal line and the first ground conductors, the signal line connected to the first feed line; a second ground conductor on the second side and connected to the second feed line; and via holes connecting the first ground conductors to the second ground conductor provided at ends of edges of the first ground conductors facing the end of the signal line where the signal line connects to the first feed line, to allow the first and second feed lines to function as balanced transmission lines.
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