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Patent Searching and Data


Title:
ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/090200
Kind Code:
A1
Abstract:
[Problem] To provide an antenna device capable of realizing a low side lobe radiation characteristic independent of the electrical tilt angle. [Solution] The present invention includes a plurality of antenna elements 2 arranged in a horizontal direction and is configured by disposing antenna element groups 20, configured so as to be able to radiate a plurality of beams in different directions, in a plurality of stages in a vertical direction. One or more stages of antenna element groups 20, starting from the top in the vertical direction, comprise a first antenna element group 21 in which, among the antenna elements 2 constituting the antenna element group 20, the antenna elements 2 of even-numbered columns are arranged at a position shifted toward either the top side or bottom side in a vertical direction from the antenna elements 2 of odd-numbered columns. The antenna element group 20 arranged below the first antenna element group 21, in a vertical direction, comprises a second antenna element group 22 in which, among the antenna elements 2 constituting the antenna element group 20, the antenna elements 2 of even-numbered columns are shifted from the antenna elements 2 of the odd-numbered columns, toward the other of the top side and bottom side.

Inventors:
YOSHIHARA SATOSHI (JP)
OGAWA TOMOYUKI (JP)
KADO SEIJI (JP)
Application Number:
PCT/JP2015/083467
Publication Date:
June 01, 2017
Filing Date:
November 27, 2015
Export Citation:
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Assignee:
HITACHI METALS LTD (JP)
International Classes:
H01Q21/06; H01Q13/08
Foreign References:
JP2015521441A2015-07-27
JP2007259047A2007-10-04
JP2007533281A2007-11-15
Attorney, Agent or Firm:
HIRATA, Tadao (JP)
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