Title:
CIRCULARLY-POLARIZED WAVE ARRAY ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/079602
Kind Code:
A1
Abstract:
An antenna device (120) is formed by arraying, in a grid of 3 rows x 10 columns, a plurality of radiation elements which each radiate circularly-polarized waves. The radiation elements include four types of radiation elements (121a-121d) set in a positional relationship of being rotationally symmetrical to each other. The radiation elements are provided with a first element group (U1) in which elements are arrayed in a grid of 3 columns ×3 rows on one end side, and a second element group (U2) in which elements are arrayed in a grid of 3 columns ×3 rows on the other end side. A first center element disposed at the center of the first element group (U1) is a type of element obtained by rotating a second center element disposed at the center of the second element group (U2) by 180 degrees.
Inventors:
YAMADA YOSHIKI (JP)
ONAKA KENGO (JP)
ONAKA KENGO (JP)
Application Number:
PCT/JP2020/031597
Publication Date:
April 29, 2021
Filing Date:
August 21, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q21/06; H01Q21/24
Domestic Patent References:
| WO2008142900A1 | 2008-11-27 |
Foreign References:
| JPS60206207A | 1985-10-17 | |||
| JPS5339043A | 1978-04-10 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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