Abstract: According to one embodiment, an intelligent reflecting surface includes a plurality of patch areas including a plurality of square patch electrodes, an electrode shape formed by the patch electrode, a first connection electrode, a second connection electrode, a third connection electrode, and a fourth connection electrode included in each of the plurality of patch areas has rotational symmetry having a point inside each of the plurality of patch areas as a center of rotation, and a first patch area, a second patch, a third patch area, and a fourth patch area have an intersection of the first patch area, the second patch area, the third patch area, and the fourth patch area as a whole as a center of rotation.

Abstract: According to one embodiment, an intelligent reflecting surface includes a first substrate, a second substrate, and a first dielectric layer sandwiched between the first substrate and the second substrate, the first substrate includes a first base, a plurality of first patch electrodes, a plurality of second patch electrodes, which are provided between the first base and the plurality of first patch electrodes, and a second dielectric layer provided between the plurality of first patch electrodes and the plurality of second patch electrodes, the first dielectric layer has a first dielectric constant, and the second dielectric layer has a second dielectric constant.

Abstract: According to one embodiment, an intelligent reflecting surface includes a first substrate including a plurality of patch electrodes spaced apart and arranged in a matrix along each of an X-axis and a Y-axis orthogonal to each other, a second substrate including a common electrode opposed to the plurality of patch electrodes in a direction parallel to a Z-axis orthogonal to each of the X-axis and the Y-axis, and a liquid crystal layer held between the first substrate and the second substrate and opposed to the plurality of patch electrodes. Each of the patch electrodes includes a first aperture.

Abstract: To reduce coupling between transmission and reception while implementing sharing of polarized waves for both the transmitting band and the receiving band at the same time. Patch antenna for transmitting band and patch antenna for receiving band, which are arranged at predetermined spacing, include an upper-stage ground conductor; a lower-stage ground conductor; a feed line which is arranged among the ground conductor and the lower-stage ground conductor; a feed slot which is formed on the upper-stage ground conductor; a patch which is electromagnetically coupled with the feed line via the feed slot; and electromagnetic shielding members which are connected with the upper-stage ground conductor and the lower-stage ground conductor in a state in which the electromagnetic shielding members are located around the feed line. The feed line includes independent feeding conductors corresponding to respective polarized waves.

Abstract: To reduce coupling between transmission and reception while implementing sharing of polarized waves for both the transmitting band and the receiving band at the same time. Patch antenna for transmitting band and patch antenna for receiving band, which are arranged at predetermined spacing, include an upper-stage ground conductor; a lower-stage ground conductor; a feed line which is arranged among the ground conductor and the lower-stage ground conductor; a feed slot which is formed on the upper-stage ground conductor; a patch which is electromagnetically coupled with the feed line via the feed slot; and electromagnetic shielding members which are connected with the upper-stage ground conductor and the lower-stage ground conductor in a state in which the electromagnetic shielding members are located around the feed line. The feed line includes independent feeding conductors corresponding to respective polarized waves.