Array antenna device

Patent metadata

Field	Value
Publication number	US-2021005983-A1
Application number	US-201817040798-A
Country	US
Kind code	A1
Filing date	May 14, 2018
Priority date	May 14, 2018
Publication date	Jan 7, 2021
Grant date	—

Abstract

In adjacent two of linear array antennas, respective first element antennas and respective second element antennas are arranged so that positions of the first element antennas in the arrangement direction are shifted from each other by a half an arrangement interval and positions of the second element antennas in the arrangement direction are shifted from each other by a half the arrangement interval, the arrangement interval being an interval between the element antennas. In two of the linear array antennas, the first element antennas of one of the two and the second element antennas of the other one of the two are arranged at the same positions, and the second element antennas of the one of the two and the first element antennas of the other one of the two are arranged at the same positions, the two being located two linear array antennas away from each other.

First claim

1 . An array antenna device comprising:
linear array antennas in each of which a first element antenna and a second element antenna are alternately arranged linearly, the first and second element antennas having respective polarization planes perpendicular to each other, wherein the linear array antennas are arranged in a direction perpendicular to an arrangement direction of the first and second element antennas, in adjacent two of the linear array antennas, respective first element antennas each of which is the first element antenna and respective second element antennas each of which is the second element antenna are arranged so that positions of the respective first element antennas in the arrangement direction are shifted from each other by a half an arrangement interval and positions of the respective second element antennas in the arrangement direction are shifted from each other by a half the arrangement interval, the arrangement interval being an interval between the first element antenna and the second element antenna, and in two of the linear array antennas, the first element antenna of one of the two and the second element antenna of another one of the two are arranged at a same position, and the second element antenna of the one of the two and the first element antenna of the other one of the two are arranged at a same position, the two being located two linear array antennas away from each other.

2 . The array antenna device according to claim 1 , wherein arrangement intervals of the first element antenna and the second element antenna in each of the linear array antennas are equal.

3 . The array antenna device according to claim 1 , wherein arrangement intervals of the linear array antennas are equal.

4 . The array antenna device according to claim 1 , wherein polarization of the first element antenna is either one of vertical polarization and horizontal polarization, and polarization of the second element antenna is another one of the vertical polarization and the horizontal polarization.

5 . The array antenna device according to claim 1 , wherein polarization of the first element antenna is either one of polarization of +45 degrees and polarization of −45 degrees, and polarization of the second element antenna is another one of the polarization of +45 degrees and the polarization of −45 degrees.

6 . The array antenna device according to claim 1 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in the arrangement direction of the first element antenna and the second element antenna in a corresponding one of the linear array antennas.

7 . The array antenna device according to claim 1 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in an arrangement direction of the linear array antennas.

8 . The array antenna device according to claim 1 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are arranged on a plane.

9 . The array antenna device according to claim 2 , wherein polarization of the first element antenna is either one of vertical polarization and horizontal polarization, and polarization of the second element antenna is another one of the vertical polarization and the horizontal polarization.

10 . The array antenna device according to claim 2 , wherein polarization of the first element antenna is either one of polarization of +45 degrees and polarization of −45 degrees, and polarization of the second element antenna is another one of the polarization of +45 degrees and the polarization of −45 degrees.

11 . The array antenna device according to claim 2 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in the arrangement direction of the first element antenna and the second element antenna in a corresponding one of the linear array antennas.

12 . The array antenna device according to claim 2 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in an arrangement direction of the linear array antennas.

13 . The array antenna device according to claim 2 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are arranged on a plane.

14 . The array antenna device according to claim 3 , wherein polarization of the first element antenna is either one of vertical polarization and horizontal polarization, and polarization of the second element antenna is another one of the vertical polarization and the horizontal polarization.

15 . The array antenna device according to claim 3 , wherein polarization of the first element antenna is either one of polarization of +45 degrees and polarization of −45 degrees, and polarization of the second element antenna is another one of the polarization of +45 degrees and the polarization of −45 degrees.

16 . The array antenna device according to claim 3 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in the arrangement direction of the first element antenna and the second element antenna in a corresponding one of the linear array antennas.

17 . The array antenna device according to claim 3 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are linearly arranged in an arrangement direction of the linear array antennas.

18 . The array antenna device according to claim 3 , wherein each of the first element antenna and the second element antenna includes a sub-array antenna in which multiple elements are arranged on a plane.

Assignees

• Mitsubishi Electric Corp

Inventors

• Yamaguchi Satoshi
• Watanabe Hikaru
• Fukasawa Toru

Classifications

• H01Q21/061 Primary

  Two dimensional planar arrays · CPC title

• H01Q21/24 Primary

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title

• H01Q21/005

  Slotted waveguides arrays · CPC title

• H01Q21/06

  Arrays of individually energised antenna units similarly polarised and spaced apart · CPC title