Title:
ANTENNA DEVICE, ELECTROMAGNETIC WAVE SHIELDING DEVICE, ELECTROMAGNETIC WAVE SHIELDING METHOD FOR ANTENNA DEVICE, AND ELECTROMAGNETIC WAVE SHIELDING PROGRAM FOR ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP2023076065
Kind Code:
A
Abstract:
To narrow down an RCS in even the frequency band of radio waves outputted from an antenna device.SOLUTION: An antenna device 1 comprises: an antenna control unit 15 for controlling an antenna 13; an electromagnetic wave shielding medium 12 which is located at a position facing a reflection surface 13a of the antenna 13 and filled with an electricity-discharging gas 12a in a space where an electrode is provided; and state transition unit 16 for causing the state of the electricity-discharging gas 12a filled in the electromagnetic wave shielding medium 12 to transition from a gaseous state to a plasma state by initiating voltage application to the electrode of the electromagnetic wave shielding medium 12, and causing the state of the electricity-discharging gas 12a filled in the electromagnetic wave shielding medium 12 to transition from the plasma state to the gaseous state by stopping voltage application to the electrode of the electromagnetic wave shielding medium 12; and a control indication unit 17 for accepting a control indication for the antenna 13 and controlling the antenna control unit 15 and the state transition unit 16 on the basis of the control indication.SELECTED DRAWING: Figure 1
Inventors:
SAITO MASAYUKI
Application Number:
JP2021189233A
Publication Date:
June 01, 2023
Filing Date:
November 22, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01Q15/14; G01S7/03
Attorney, Agent or Firm:
Yasutaka Kuratani
Shigeaki Matsui
Kenro Date
Shigeaki Matsui
Kenro Date
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