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US 12,706,390 B2Granted
Micro lens array antenna and radar device and vehicle having micro lens array antenna
AssigneeMurata Manufacturing Co., Ltd.
InventorKazunari Kawahata
Life of this patent
Estimating the term…
Abstract
A micro lens array that includes a planar array antenna including a plurality of planar antennas formed on a substrate, a plurality of dielectric lenses each provided above each of the plurality of planar antennas, and a plurality of dielectric plates each provided on part of the substrate, the part being provided between two adjacent dielectric lenses of the plurality of dielectric lenses.
Claims14
A micro lens array antenna comprising:
- a planar array antenna including a plurality of planar antennas formed on a substrate;
- a plurality of dielectric lenses each provided above each of the plurality of planar antennas;
- and
- a plurality of dielectric plates each provided on part of the substrate, the part being provided between two adjacent dielectric lenses of the plurality of dielectric lenses,
- wherein each of the plurality of dielectric plates has a thickness and a dielectric constant at which a phase of a second reflected radio wave shifts from a phase of a first reflected radio wave by a predetermined phase, the first reflected radio wave being a radio wave that is emitted from each of the plurality of planar antennas and reflected by a first side surface of the dielectric plate facing the planar antenna of the plurality of planar antennas, the second reflected radio wave being a radio wave that passes through the first side surface, propagates through the dielectric plate, is reflected by a second side surface of the dielectric plate opposite to the first side surface, and appears in a space on a side of the first side surface of the dielectric plate.
2 more elements
A radar device comprising:
- a micro lens array antenna, wherein
- the micro lens array antenna includes
- a planar array antenna including a plurality of planar antennas formed on a substrate,
- a plurality of dielectric lenses each provided above each of the plurality of planar antennas, and
- a plurality of dielectric plates each provided on part of the substrate, the part being provided between two adjacent dielectric lenses of the plurality of dielectric lenses,
- wherein each of the plurality of dielectric plates has a thickness and a dielectric constant at which a phase of a second reflected radio wave shifts from a phase of a first reflected radio wave by a predetermined phase, the first reflected radio wave being a radio wave that is emitted from each of the plurality of planar antennas and reflected by a first side surface of the dielectric plate facing the planar antenna of the plurality of planar antennas, the second reflected radio wave being a radio wave that passes through the first side surface, propagates through the dielectric plate, is reflected by a second side surface of the dielectric plate opposite to the first side surface, and appears in a space on a side of the first side surface of the dielectric plate.
3 more elements
A vehicle comprising:
- a radar device that includes a micro lens array antenna, wherein
- the micro lens array antenna includes
- a planar array antenna including a plurality of planar antennas formed on a substrate,
- a plurality of dielectric lenses each provided above each of the plurality of planar antennas, and
- a plurality of dielectric plates each provided on part of the substrate, the part being provided between two adjacent dielectric lenses of the plurality of dielectric lenses,
- wherein each of the plurality of dielectric plates has a thickness and a dielectric constant at which a phase of a second reflected radio wave shifts from a phase of a first reflected radio wave by a predetermined phase, the first reflected radio wave being a radio wave that is emitted from each of the plurality of planar antennas and reflected by a first side surface of the dielectric plate facing the planar antenna of the plurality of planar antennas, the second reflected radio wave being a radio wave that passes through the first side surface, propagates through the dielectric plate, is reflected by a second side surface of the dielectric plate opposite to the first side surface, and appears in a space on a side of the first side surface of the dielectric plate.
3 more elements
Dependencies are inferred from the claim text.