Abstract: An antenna device includes a ground plane, a flat-plate-shaped first feed element, a flat-plate-shaped second feed element, a first feed line connected to the first feed element, and a second feed line connected to the second feed element. The ground plane, the first feed element, and the second feed element are stacked respective order and spaced apart from each other. At least part of the second feed line is disposed in a same conductor layer as the ground plane and is disposed at a position that overlaps the first feed element as the ground plane is viewed from a plan view.

Abstract: A patch antenna is constituted by a radiation element disposed on a substrate and a ground conductor disposed in the substrate. A dielectric member is disposed to cover the radiation element and a body of a resin material is disposed to cover the dielectric material as viewed from above. The dielectric member is disposed on a side opposite a side on which the ground conductor is disposed as viewed from the radiation element. When a direction of a normal line to the radiation element is assumed as a height direction, a line which links centroids of horizontal sectional surfaces of the dielectric member in the height direction leans with respect to the direction of the normal line to the radiation element.

Abstract: A feed element for feeding power is disposed on a substrate. A first parasitic element is disposed at a position different from a position of the feed element as viewed from above and is electromagnetically coupled with the feed element. A dielectric member is disposed at a position at which the dielectric member at least partially covers the feed element and the first parasitic element as viewed from above. A conductive pattern is disposed on a surface of the dielectric member which faces the feed element at a position at which the conductive pattern matches the first parasitic element as viewed from above. The dielectric member is supported by the substrate as a result of the conductive pattern being electrically connected to the first parasitic element.

Abstract: A patch antenna is constituted by a radiation element disposed on a substrate and a ground conductor disposed in the substrate. A dielectric member is disposed to at least partially cover the radiation element as viewed from above. The dielectric member is disposed on a side opposite a side on which the ground conductor is disposed as viewed from the radiation element. When a direction of a normal line to the radiation element is assumed as a height direction and when an imaginary plane perpendicular to the height direction is assumed as a reference plane, the dielectric member has a side surface which tilts with respect to the reference plane. The dielectric member has no focal point for a radio wave entering the dielectric member in parallel with the height direction.

Abstract: An antenna device includes a substrate, a first antenna element extending in a direction perpendicular to a first surface of the substrate and functioning as a monopole antenna, a second antenna element provided adjacent to the first antenna element, extending in the direction perpendicular to the first surface of the substrate, and functioning as a monopole antenna, a ground layer provided in or on the substrate, a connection wire provided in or on the substrate and connecting the first antenna element and the second antenna element to each other, a power feeding line provided in or on the substrate and connected to the connection wire, and a first reflector provided in a direction in which the first antenna element and the second antenna element are adjacent to each other and facing the first antenna element and the second antenna element.

Abstract: An antenna module includes a base member, an antenna that includes a radiating element disposed in or on the base member, first and second feed lines each of which is connected to the radiating element, and a control circuit that is connected to the radiating element via the first feed line and the second feed line. The control circuit includes a signal processing circuit that is connected to the antenna via the first feed line and the second feed line and an antenna inspection circuit that checks an electrical conductivity of an electrical conduction path connecting the first feed line, the radiating element, and the second feed line to one another.

Abstract: A ground plane is disposed on or in an inner layer of a dielectric substrate. Moreover, a feed line is disposed on or in the dielectric substrate. A first antenna element and a second antenna element are supported on the dielectric substrate. The first antenna element and the second antenna element include a first radiating element and a second radiating element connected to the feed line, respectively, and are disposed on a same side when seen from the ground plane. With a height of the ground plane being a reference, a top portion of the second antenna element is located higher than a top portion of the first antenna element. There is provided an antenna device of which the band can be expanded and of which the internal space of the casing can be effectively utilized.

Abstract: An antenna module includes a base member, an antenna that includes a radiating element disposed in or on the base member, first and second feed lines each of which is connected to the radiating element, and a control circuit that is connected to the radiating element via the first feed line and the second feed line. The control circuit includes a signal processing circuit that is connected to the antenna via the first feed line and the second feed line and an antenna inspection circuit that checks an electrical conductivity of an electrical conduction path connecting the first feed line, the radiating element, and the second feed line to one another.

Abstract: A patch antenna is constituted by a radiation element disposed on a substrate and a ground conductor disposed in the substrate. A dielectric member is disposed to cover the radiation element and a body of a resin material is disposed to cover the dielectric material as viewed from above. The dielectric member is disposed on a side opposite a side on which the ground conductor is disposed as viewed from the radiation element. When a direction of a normal line to the radiation element is assumed as a height direction, a line which links centroids of horizontal sectional surfaces of the dielectric member in the height direction leans with respect to the direction of the normal line to the radiation element.

Abstract: A patch antenna is constituted by a radiation element disposed on a substrate and a ground conductor disposed in the substrate. A dielectric member is disposed to at least partially cover the radiation element as viewed from above. The dielectric member is disposed on a side opposite a side on which the ground conductor is disposed as viewed from the radiation element. When a direction of a normal line to the radiation element is assumed as a height direction and when an imaginary plane perpendicular to the height direction is assumed as a reference plane, the dielectric member has a side surface which tilts with respect to the reference plane. The dielectric member has no focal point for a radio wave entering the dielectric member in parallel with the height direction.

Abstract: A feed element for feeding power is disposed on a substrate. A first parasitic element is disposed at a position different from a position of the feed element as viewed from above and is electromagnetically coupled with the feed element. A dielectric member is disposed at a position at which the dielectric member at least partially covers the feed element and the first parasitic element as viewed from above. A conductive pattern is disposed on a surface of the dielectric member which faces the feed element at a position at which the conductive pattern matches the first parasitic element as viewed from above. The dielectric member is supported by the substrate as a result of the conductive pattern being electrically connected to the first parasitic element.

Abstract: An antenna device includes a substrate, a first antenna element extending in a direction perpendicular to a first surface of the substrate and functioning as a monopole antenna, a second antenna element provided adjacent to the first antenna element, extending in the direction perpendicular to the first surface of the substrate, and functioning as a monopole antenna, a ground layer provided in or on the substrate, a connection wire provided in or on the substrate and connecting the first antenna element and the second antenna element to each other, a power feeding line provided in or on the substrate and connected to the connection wire, and a first reflector provided in a direction in which the first antenna element and the second antenna element are adjacent to each other and facing the first antenna element and the second antenna element.

Abstract: An antenna module includes a base member, an antenna that includes a radiating element disposed in or on the base member, first and second feed lines each of which is connected to the radiating element, and a control circuit that is connected to the radiating element via the first feed line and the second feed line. The control circuit includes a signal processing circuit that is connected to the antenna via the first feed line and the second feed line and an antenna inspection circuit that checks an electrical conductivity of an electrical conduction path connecting the first feed line, the radiating element, and the second feed line to one another.