Array antenna apparatus and method for manufacturing array antenna apparatus

Patent metadata

Field	Value
Publication number	US-11605903-B2
Application number	US-201616318924-A
Country	US
Kind code	B2
Filing date	Aug 10, 2016
Priority date	Aug 10, 2016
Publication date	Mar 14, 2023
Grant date	Mar 14, 2023

Abstract

Waveguide slot array antennas each having slots, that transmit or receive electromagnetic waves and that are formed in a front surface of a waveguide and waveguide slot array antennas each having slots that transmit or receive electromagnetic waves and that are formed in a front surface of a waveguide, and the waveguide slot array antennas and the waveguide slot array antennas are alternately arranged, the waveguide is a ridge waveguide having a ridge formed inside the waveguide, and the waveguide is a ridge waveguide having ridges, formed inside the waveguide.

First claim

The invention claimed is:

1. An array antenna apparatus, comprising:
a first antenna including a first waveguide with a first slot for transmitting or receiving an electromagnetic wave, the first slot being formed in a front surface of the first waveguide; and
a second antenna including a second waveguide with a second slot for transmitting or receiving an electromagnetic wave, the second slot being formed in a front surface of the second waveguide, wherein
the first antenna and the second antenna are alternately arranged,
the first waveguide is a ridge waveguide having a first protrusion formed inside,
the second waveguide is a ridge waveguide having a second protrusion formed inside, and
of surfaces of the first protrusion, a plane parallel to the front surface of the first waveguide and, of surfaces of the second protrusion, a plane parallel to the front surface of the second waveguide are in a same plane,
wherein
the first slot is an opening whose longitudinal direction is in waveguide axial direction of the first waveguide,
the second slot is an opening whose longitudinal direction is in waveguide width direction of the second waveguide,
the first protrusion is a protrusion extending from a bottom of a cavity of the first waveguide toward the front surface of the first waveguide, and
the second protrusion is a protrusion extending from a side part of a cavity of the second waveguide toward an opposite side part.

2. An array antenna apparatus, comprising:
a first antenna comprising a first waveguide with a first slot for transmitting or receiving an electromagnetic wave, the first slot being formed in a front surface of the first waveguide; and
a second antenna comprising a second waveguide with a second slot for transmitting or receiving an electromagnetic wave, the second slot being formed in a front surface of the second waveguide, wherein
the first antenna and the second antenna are alternately arranged,
the first waveguide is a ridge waveguide having a first protrusion formed inside,
the second waveguide is a ridge waveguide having a second protrusion formed inside, and
a dimension in a waveguide width direction of the first waveguide differs from a dimension in a waveguide width direction of the second waveguide,
wherein
of surfaces of the first protrusion, a plane parallel to the front surface of the first waveguide and, of surfaces of the second protrusion, a plane parallel to the front surface of the second waveguide are in a same plane,

wherein
the first slot is an opening whose longitudinal direction is a waveguide axial direction of the first waveguide,
the second slot is an opening whose longitudinal direction is a waveguide axial direction of the second waveguide,
the first protrusion is a protrusion extending from a bottom of a cavity of the first waveguide toward the front surface of the first waveguide, and
the second protrusion is a protrusion extending from a bottom of a cavity of the second waveguide toward the front surface of the second waveguide.

3. An array antenna apparatus, comprising:
a first antenna comprising a first waveguide with a first slot for transmitting or receiving an electromagnetic wave, the first slot being formed in a front surface of the first waveguide; and
a second antenna comprising a second waveguide with a second slot for transmitting or receiving an electromagnetic wave, the second slot being formed in a front surface of the second waveguide, wherein
the first antenna and the second antenna are alternately arranged,
the first waveguide is a ridge waveguide having a first protrusion formed inside,
the second waveguide is a ridge waveguide having a second protrusion formed inside, and
a dimension in a height direction of the first waveguide differs from a dimension in a height direction of the second waveguide,
wherein
of surfaces of the first protrusion, a plane parallel to the front surface of the first waveguide and, of surfaces of the second protrusion, a plane parallel to the front surface of the second waveguide are in a same plane,

wherein
the first slot is an opening whose longitudinal direction is a waveguide width direction of the first waveguide,
the second slot is an opening whose longitudinal direction is a waveguide width direction of the second waveguide,
the first protrusion is a protrusion extending from a side part of a cavity of the first waveguide toward an opposite side part, and
the second protrusion is a protrusion extending from a side part of a cavity of the second waveguide toward an opposite side part.

4. The array antenna apparatus according to claim 1 , wherein a dimension in a height direction of the first waveguide differs from a dimension in a height direction of the second waveguide.

Assignees

• Mitsubishi Electric Corp

Inventors

• Watanabe Hikaru
• Maruyama Takashi
• Otsuka Masataka
• USHIJIMA Yu
• Kihira Kazunari

Classifications

• H01Q21/005 Primary

  Slotted waveguides arrays · CPC title

• H01Q5/42

  using two or more imbricated arrays (H01Q5/49 takes precedence) · 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

• H01Q13/22

  Longitudinal slot in boundary wall of waveguide or transmission line {(H01Q13/203 takes precedence)} · CPC title

• H01P3/123

  with a complex or stepped cross-section, e.g. ridged or grooved waveguides (H01P3/14 takes precedence) · CPC title