Patent ID: 11962081
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. 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.