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Title:
ANTENNA APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/111183
Kind Code:
A1
Abstract:
An antenna apparatus according to the present invention transmits and receives VHF band radio waves and includes: a first antenna device and a second antenna device each including, at a part from a power-supply point to an end thereof, an element having a shape including a length component in a first direction and a length component in a second direction that is perpendicular to the first direction; and a phase shifter that controls the polarizing direction of the antenna apparatus by adjusting a first power-supply phase of the first antenna device and a second power-supply phase of the second antenna device or by adjusting a first synthetic phase of the first antenna device and a second synthetic phase of the second antenna device. The first antenna device and the second antenna device are arranged such that, when the first power-supply phase and the second power-supply phase are in phase with each other or when the first synthetic phase and the second synthetic phase are in phase with each other, their polarization components in the first direction are strengthened by each other and their polarization components in the second direction are weakened by each other.

Inventors:
KARAKI Atsushi (1-1Toyosu 3-chome, Koto-k, Tokyo 10, 〒1358710, JP)
OKUNO Shuichi (Ltd 4-72,Miyagayato, Minuma-ku,Saitama-Cit, Saitama 11, 〒3370011, JP)
ISHIKAWA Masazumi (Ltd 4-72,Miyagayato, Minuma-ku,Saitama-Cit, Saitama 11, 〒3370011, JP)
TANIMOTO Kazuo (LTD 2223,Naganuma-cho, Isesaki-sh, Gunma 85, 〒3728585, JP)
Application Number:
JP2015/086046
Publication Date:
July 14, 2016
Filing Date:
December 24, 2015
Export Citation:
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Assignee:
IHI CORPORATION (1-1Toyosu 3-chome, Koto-ku Tokyo, 10, 〒1358710, JP)
International Classes:
H01Q3/30; H01Q1/28; H01Q13/08; H01Q21/06
Foreign References:
JPH11284425A1999-10-15
JP2014147060A2014-08-14
JPH0786825A1995-03-31
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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