Title:
ANTENNA DEVICE
Document Type and Number:
Japanese Patent JP2014158073
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To obtain an antenna device capable of preventing deterioration in communication performance caused by fallen snow without restriction in an arrangement direction of a heating wire and without preventing polarization radiation even for an antenna emitting a radio wave without going through a reflection plate.SOLUTION: An antenna device comprises: a power feeding part 3 applying a high-frequency voltage between a ground conductor 1 and a radiation conductor 2; a radome 4 arranged so as to cover the radiation conductor 2; and a heating wire 5 arranged to the radome 4, and having a high electric resistivity in such a degree that polarization radiation emitted from the radiation conductor 2 is not prevented. Since the heating wire 5 has the high electric resistivity in such a degree that polarization radiation emitted from the radiation conductor 2 is not prevented, the polarization radiation is not prevented even when the heating wire 5 is arranged so as to include a component not at a right angle to a polarization direction. Thereby, an antenna device that can prevent deterioration in communication performance caused by fallen snow without restriction in an arrangement direction of the heating wire 5 and without preventing polarization radiation even for an antenna emitting a radio wave without going through a reflection plate, can be obtained.
Inventors:
YANAGI TAKASHI
FUKAZAWA TORU
MIYASHITA HIROAKI
FUKAZAWA TORU
MIYASHITA HIROAKI
Application Number:
JP2013026622A
Publication Date:
August 28, 2014
Filing Date:
February 14, 2013
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H01Q1/02; H01Q1/42; H01Q15/14
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada First sound
Teruyo Kume
Kawamura 秀央
Hamada First sound
Teruyo Kume
Kawamura 秀央