ANTENNA DEVICE
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United States of America Patent
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Issued Date -
Feb 15, 2024
app pub date -
Oct 24, 2023
filing date -
Apr 28, 2021
priority date (Note) -
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Abstract
An antenna device includes a feeder circuit, a patch antenna, an antenna, a first coil connected between the feeder circuit and the patch antenna, and a second coil connected to the antenna and magnetically coupled to the first coil. The patch antenna resonates in a first frequency range in a first direction and in a second frequency range in a second direction. The antenna resonates in a third frequency range. A first center frequency refers to the center frequency of the first frequency range, a second center frequency refers to the center frequency of the second frequency range, a third center frequency refers to the center frequency of the third frequency range, and an absolute value of a difference between the first center frequency and the third center frequency is less than an absolute value of a difference between the second center frequency and the third center frequency.
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