Structure, antenna, wireless communication module, and wireless communication device
A structure includes first to fourth conductors. The first conductor extends along a second plane including a second direction and a third direction intersecting with the second direction. The second conductor faces the first conductor along a first direction intersecting with the second plane and extends along the second plane. The third conductor capacitively connects the first conductor and the second conductor. The fourth conductor is electrically connected to the first conductor and the second conductor, and extends along a first plane including the first direction and the third direction. The third conductor includes a first conductive layer and a second conductive layer capacitively connected to the first conductive layer. The second conductive layer is positioned between the first conductive layer and the fourth conductor in the second direction. The first conductive layer has more thickness in the second direction as compared to thickness of the second conductive layer.
1. A structure comprising:
a first conductor that extends along a second plane, the second plane including a second direction and a third direction, the third direction intersecting with the second direction;
a second conductor that faces the first conductor along a first direction intersecting with the second plane, and that extends along the second plane;
a third conductor that is configured to capacitively connect the first conductor and the second conductor; and
a fourth conductor that is electrically connected to the first conductor and the second conductor, and that extends along a first plane, the first plane including the first direction and the third direction, wherein
the third conductor includes
a first conductive layer, and
a second conductive layer that is configured to be capacitively connected to the first conductive layer,
the second conductive layer is positioned between the first conductive layer and the fourth conductor in the second direction, and
the first conductive layer has more thickness in the second direction as compared to thickness of the second conductive layer.
2. The structure according to claim 1 , further comprising a first dielectric layer that is positioned between the first conductive layer and the second conductive layer, wherein
the second conductive layer has less thickness in the second direction as compared to thickness of the first dielectric layer.
3. The structure according to claim 1 , wherein
the second conductive layer includes
a first surface that faces the first conductive layer in the second direction, and
a second surface that faces an opposite direction of the first surface in the second direction, and
asperity of the first surface is lower than asperity of the second surface.
4. The structure according to claim 1 , wherein
the first conductive layer includes
a third surface that faces the second conductive layer in the second direction, and
a fourth surface that faces an opposite direction of the third surface in the second direction, and
asperity of the third surface is higher than asperity of the fourth surface.
5. The structure according to claim 4 , wherein
the first conductive layer includes a plurality of first patches arranged along the first plane, and
in each of the plurality of first patches, an area of the third surface is greater than an area of the fourth surface.
6. The structure according to claim 5 , wherein
the second conductive layer includes at least one second patch, and
the second patch is configured to be capacitively coupled with a plurality of first patches arranged in the third direction from among the plurality of first patches.
7. The structure according to claim 1 , wherein
the first conductive layer includes a plurality of first patches arranged along the first plane, and
in each of the plurality of first patches, an area of a third surface that faces the second conductive layer in the second direction is greater than an area of a fourth surface that faces an opposite direction of the second conductive layer in the second direction.
8. The structure according to claim 7 , wherein, in each of the plurality of first patches, at least one of lateral faces when viewed from the second direction has shape of an arc.
9. The structure according to claim 5 , wherein
the second conductive layer includes at least one second patch, and
the second patch is configured to be capacitively coupled with a plurality of first patches arranged in the third direction from among the plurality of first patches.
10. The structure according to claim 1 , wherein
the first conductive layer includes a plurality of first patches arranged along the first plane, and
in each of the plurality of first patches, at least one of lateral faces when viewed from the second direction has shape of an arc.
11. The structure according to claim 10 , wherein
the second conductive layer includes at least one second patch, and
the second patch is configured to be capacitively coupled with a plurality of first patches arranged in the third direction from among the plurality of first patches.
12. An antenna comprising:
the structure according to claim 1 ; and
a feeding line that is configured to electromagnetically feed electric power to the third conductor.
13. A wireless communication module comprising:
the antenna according to claim 12 ; and
an RF module that is connected to the feeding line.
14. A wireless communication device comprising:
the wireless communication module according to claim 13 ; and
a battery that is configured to supply electric power to the wireless communication module.