Title:
ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP2023093097
Kind Code:
A
Abstract:
To provide an antenna device capable of improving the radiation directivity to the ground surface and radiation gain when the frequency of radiated radio waves is low.SOLUTION: An antenna device has an enclosure whose bottom is placed on the ground surface or buried underground, a substrate with a circuit housed in the enclosure, an antenna located on the substrate and radiating low-frequency radio waves by feeding power from the circuit, and a conductor located at the bottom and having an area larger than the substrate. The conductor is disposed outside the enclosure or inside the enclosure at the bottom.SELECTED DRAWING: Figure 1
Inventors:
FURUYA KOTA
KOMATA JUNICHI
KOMATA JUNICHI
Application Number:
JP2021208510A
Publication Date:
July 04, 2023
Filing Date:
December 22, 2021
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD
International Classes:
H01Q1/04; H01Q1/22; H01Q1/38; H05K5/00; H05K9/00
Attorney, Agent or Firm:
Patent Attorney Corporation Washida International Patent Office
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