Antenna device
AssigneeMitsubishi Electric Corporation
InventorsHiromasa Nakajima, Shinichi Yamamoto, Michio Takikawa
Life of this patent
Estimating the term…
Abstract
An antenna and a radome that covers the antenna are provided, the radome includes a first part, a second part, and a third part each with a surface which is flush to each other, the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part, the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part, and the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part.
Claims7
An antenna device comprising an antenna and a radome that covers the antenna, wherein:
- the antenna includes a substrate and an antenna element;
- the radome includes a first part, a second part and a third part each with a surface which is flush to each other, and a surface of the first part, a surface of the second part, and a surface of the third part, opposing the antenna, together forming a single planar surface;
- the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part;
- the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part;
- and
- the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part, wherein:
- the antenna is a planar antenna;
- and
- the second part is adjacent to one end of the first part, and the third part is adjacent to the other end of the first part, and, wherein:
- each of the first part, the second part, and the third part is composed of one or more layers;
- the first part and the second part differ in at least one or more of a number of layers, and a thickness of each layer when the one or more layers are a plurality of layers, and thus differ in the beam transmission characteristic;
- and
- the first part and the third part differ in at least one or more of a number of layers, and a thickness of each layer when the one or more layers are a plurality of layers, and thus differ in the beam transmission characteristic.
An antenna device comprising an antenna and a radome that covers the antenna, wherein:
- the radome includes a first part, a second part and a third part each with a surface which is flush to each other;
- the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part;
- the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part;
- and
- the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part, wherein:
- the antenna is an aperture antenna;
- and
- the third part is adjacent to one end of the second part, and the first part is adjacent to the other end of the second part, wherein:
- each of the first part, the second part, and the third part is composed of one or more layers;
- the first part and the second part differ in at least one or more of a number of layers, a material of the layer, and a thickness of each layer when the one or more layers are a plurality of layers, and thus differ in the beam transmission characteristic;
- the first part and the third part differ in at least one or more of a number of layers, a material of the layer, and a thickness of each layer when the one or more layers are a plurality of layers, and thus differ in the beam transmission characteristic;
- the second part and the third part differ in at least one or more of a number of layers, a material of the layer, and a thickness of each layer when the one or more layers are a plurality of layers, and thus differ in the beam transmission characteristic;
- and
- a surface of the first part, a surface of the second part, and a surface of the third part, facing the antenna, form a single planar surface.
Dependencies are inferred from the claim text.