Antenna Device, Transmitter Module Using the Antenna Device, and Location Identifying System Using the Transmitter Module
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United States of America Patent
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-
N/A
Issued Date -
Sep 10, 2015
app pub date -
Feb 24, 2015
filing date -
Mar 6, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Provided is an antenna device which is compact and light-weight. The antenna device includes a grounded conductor portion formed of a grounded conductor, a base portion including a grounded portion connected to the grounded conductor portion and a power supplied portion receiving input of an AC power, the base portion being made of conductor and disposed in opposition to the grounded conductor portion with a predetermined distance therefrom, a first extension portion extending from an end portion of the base portion where the power supplied portion is formed, the first extension portion having a length as determined from the power supplied portion which length is set according to a frequency of a transmitted/received signal, and a second extension portion extending from a further end portion of the base portion where the grounded portion is formed, the second extension portion having an opposing portion disposed in opposition to a leading end portion of the first extension portion with a predetermined distance therefrom.
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