Abstract: The disclosure relates to an antenna reflector phase correction film and a reflector antenna. The antenna reflector phase correction film includes a first substrate, a second substrate, and multiple artificial microstructures disposed between the first substrate and the second substrate, the artificial microstructures are wires made of electrically conductive materials, and an electromagnetic wave, emergent after being reflected by an antenna reflector attached with the antenna reflector phase correction film, has an equiphase surface. According to the disclosure, the antenna reflector phase correction film has specific refractive index distribution internally, so that a surface emergent phase of a reflector can be corrected after attaching onto a surface of a conventional reflector, a phase error caused due to installation or processing is improved, a complete flat emergent equiphase is obtained, and then a far-field performance (such as a higher gain) is improved.

Abstract: A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

Abstract: The disclosure relates to a metamaterial antenna, where the metamaterial antenna includes an enclosure, a feed, a first metamaterial that clings to an aperture edge of the feed, a second metamaterial that is separated by a preset distance from the first metamaterial and is set oppositely, and a third metamaterial that clings to an edge of the second metamaterial, where the enclosure, the feed, the first metamaterial, the second metamaterial, and the third metamaterial make up a closed cavity; and a central axis of the feed penetrates center points of the first metamaterial and the second metamaterial; and a reflection layer for reflecting an electromagnetic wave is set on surfaces of the first metamaterial and the second metamaterial, where the surfaces are located outside the cavity.

Abstract: Disclosed is a Cassegrain microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, and a second metamaterial panel having an electromagnetic wave convergence feature and used for converting into plane wave the electromagnetic wave radiated by the first metamaterial panel. Employment of the principle of metamaterial for manufacturing the antenna allows the antenna to break away from restrictions of conventional concave lens shape, convex lens shape, and parabolic shape, thereby allowing the shape of the Cassegrain microwave antenna to be panel-shaped or any shape as desired, while allowing for reduced thickness, reduced size, and facilitated processing and manufacturing, thus providing beneficial effects of reduced costs and improved gain effect.

Abstract: The present invention discloses a Cassegrain satellite television antenna comprising a metamaterial plate. The metamaterial plate comprises a core layer. The core layer comprises core sublayers. Each core sublayer comprises a circular area and a plurality of annuli distributed around the circular area. According to the Cassegrain satellite television antenna of the present invention, the traditional parabolic antenna is replaced with a sheet-like metamaterial plate which is easier to process and has a lower cost. In addition, the present invention also provides a satellite television receiving system equipped with the above-mentioned Cassegrain satellite television antenna.

Abstract: A front feed microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, a second metamaterial panel, and a reflective panel affixed to the back of the first metamaterial panel. The electromagnetic wave is emitted via the first metamaterial panel, refracted by entering the second metamaterial panel, reflected by the reflective panel, and finally re-refracted by reentering the second metamaterial panel, then finally parallel-emitted.

Abstract: Disclosed is an offset feed satellite television antenna comprising a metamaterial panel (100) arranged behind a feed (1). The metamaterial panel (100) comprises a core layer (10) and a reflective panel (200) arranged on a lateral surface of the core layer (10). The core layer (10) comprises at least one core layer lamella (11). The core layer lamella (11) can be divided into multiple belt areas on the basis of refractive indexes. With a fixed point as a center, the refractive indexes on the multiple belt areas are identical at a same radius, while the refractive indexes on each belt area decrease gradually as the radius increases. For two adjacent belt areas, the minimum value of the refractive indexes of the inner belt area is less than the maximum value of the refractive indexes of the outer belt area. A connection between the center and the feed (1) is perpendicular to the core layer lamella (11), while the center does not overlap the center of the core layer lamella (11).

Abstract: A front feed satellite television antenna includes a metamaterial panel. The metamaterial panel includes a core layer and a reflective panel. The core layer includes a core layer lamella which further includes a circular area and multiple annular areas distributed around the circular area. Within the circular area and the annular areas, refractive indexes are identical at a same radius, and within the respective areas, the refractive indexes decrease gradually as radius increases. The minimum refractive index of the circular area is less than the maximum the refractive index of the annular area adjacent thereto. For two adjacent annular areas, the minimum refractive index of the annular area at the inner side is less than the maximum refractive indexes of the annular area at the outer side. The metamaterial panel can replace conventional parabolic antenna, thus facilitating manufacturing and processing, and further reducing costs.

Abstract: Disclosed is a Cassegrain microwave antenna, which comprises a radiation source, a first metamaterial panel used for radiating an electromagnetic wave emitted by the radiation source, and a second metamaterial panel having an electromagnetic wave convergence feature and used for converting into plane wave the electromagnetic wave radiated by the first metamaterial panel. Employment of the principle of metamaterial for manufacturing the antenna allows the antenna to break away from restrictions of conventional concave lens shape, convex lens shape, and parabolic shape, thereby allowing the shape of the Cassegrain microwave antenna to be panel-shaped or any shape as desired, while allowing for reduced thickness, reduced size, and facilitated processing and manufacturing, thus providing beneficial effects of reduced costs and improved gain effect.

Abstract: An impedance matching component is disclosed. The impedance matching component is disposed on and closely attached to a first side surface of a function dielectric sheet.

Abstract: A metamaterial for deflecting an electromagnetic wave is disclosed, which comprises a functional layer. The functional layer comprises a plurality of sheet layers parallel to each other, and each of the sheet layers comprises a sheet-like substrate and a plurality of man-made microstructures arranged in an array on the sheet-like substrate. The sheet-like substrate comprises a plurality of unit blocks, and each of the man-made microstructures and a corresponding one of the unit blocks occupied thereby form a unit cell. Refractive indices of the unit cells arranged in a first direction in each of the sheet layers decrease gradually. Each of the unit cells has an anisotropic electromagnetic parameter. Through use of the metamaterial of the present disclosure, deflection of the electromagnetic wave can be achieved.

Abstract: The present invention discloses a Cassegrain satellite television antenna comprising a metamaterial plate. The metamaterial plate comprises a core layer. The core layer comprises core sublayers. Each core sublayer comprises a circular area and a plurality of annuli distributed around the circular area. According to the Cassegrain satellite television antenna of the present invention, the traditional parabolic antenna is replaced with a sheet-like metamaterial plate which is easier to process and has a lower cost. In addition, the present invention also provides a satellite television receiving system equipped with the above-mentioned Cassegrain satellite television antenna.

Abstract: The present invention relates to an antenna based on a metamaterial and a method for generating an operating wavelength of a metamaterial panel. The antenna comprises a radiation source, and a metamaterial panel capable of converging an electromagnetic wave and operating at a first wavelength. The metamaterial panel is adapted to convert the electromagnetic wave radiated from the radiation source into a plane wave and to enable the antenna to simultaneously operate at a second wavelength and a third wavelength which are smaller than the first wavelength and are different multiples of the first wavelength. The present invention further provides a method for generating an operating wavelength of a metamaterial panel for use in the aforesaid antenna. These improve the convergence performance and reduce the volume and size of the antenna.

Abstract: Disclosed is a front feed satellite television antenna comprising a metamaterial panel. The metamaterial panel comprises a core layer and a reflective panel. The core layer comprises a core layer lamella. The core layer lamella comprises a circular area and multiple annular areas distributed around the circular area. Within the circular area and the annular areas, refractive indexes are identical at a same radius, and within the respective areas of the circular area and of the annular areas, the refractive indexes decrease gradually as the radius increases. The minimum value of the refractive indexes of the circular area is less than the maximum value of the refractive indexes of the annular area adjacent thereto. For two adjacent annular areas, the minimum value of the refractive indexes of the annular area at the inner side is less than the maximum value of the refractive indexes of the annular area at the outer side.

Abstract: The present invention relates to a metamaterial and a metamaterial antenna. The metamaterial is disposed in a propagation direction of the electromagnetic waves emitted from a radiation source. A line connecting the radiation source to a point on a first surface of the metamaterial and a line perpendicular to the metamaterial form an angle ? therebetween, which uniquely corresponds to a curved surface in the metamaterial. Each point on the curved surface to which the angle ? uniquely corresponds has a same refractive index. Refractive indices of the metamaterial decrease gradually as the angle ? increases. The electromagnetic waves propagating through the metamaterial exits in parallel from a second surface of the metamaterial. The refraction, diffraction and reflection at the abrupt transition points can be significantly reduced in the present disclosure and the problems caused by interferences are eased, which further improves performances of the metamaterial and the metamaterial antenna.

Abstract: The present invention relates to a man-made composite material and a man-made composite material antenna. The man-made composite material is disposed in a propagation direction of a plane electromagnetic wave and convert it into a spherical wave. Reverse extensions of the spherical wave intersect at a virtual focus. A line connecting the virtual focus to a point on the second surface of the man-made composite material and a line perpendicular to the man-made composite material form an angle ? therebetween, which uniquely corresponds to a curved surface in the man-made composite material. A set formed by points having the same angle ? forms a boundary of the curved surface to which the angle ? uniquely corresponds. Each point on the curved surface to which the angle ? uniquely corresponds has a same refractive index. Refractive indices of the man-made composite material increase gradually as the angle ? increases.

Abstract: The present invention relates to a man-made composite material. The man-made composite material is divided into a plurality of regions. A plane electromagnetic wave is incident on a first surface and exits in the form of a spherical wave from a second surface of the man-made composite material opposite to the first surface. Reverse extensions of the exiting electromagnetic wave intersect with each other at a virtual focus of the man-made composite material. A line connecting the virtual focus to a point on the top surface of the ith region and a line perpendicular to the man-made composite material form an angle ? therebetween, which uniquely corresponds to a curved surface in the ith region. A set formed by points on the top surface of the ith region that have the same angle ? forms a boundary of the curved surface to which the angle ? uniquely corresponds.

Abstract: The disclosure relates to an antenna reflector phase correction film and a reflector antenna. The antenna reflector phase correction film includes a first substrate, a second substrate, and multiple artificial microstructures disposed between the first substrate and the second substrate, the artificial microstructures are wires made of electrically conductive materials, and an electromagnetic wave, emergent after being reflected by an antenna reflector attached with the antenna reflector phase correction film, has an equiphase surface. According to the disclosure, the antenna reflector phase correction film has specific refractive index distribution internally, so that a surface emergent phase of a reflector can be corrected after attaching onto a surface of a conventional reflector, a phase error caused due to installation or processing is improved, a complete flat emergent equiphase is obtained, and then a far-field performance (such as a higher gain) is improved.

Abstract: A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

Abstract: The present disclosure relates to a metamaterial for diverging an electromagnetic wave, which comprises at least one metamaterial sheet layer. Refractive indices of the metamaterial sheet layer are distributed in a circular form with a center of the metamaterial sheet layer, and the refractive indices remain unchanged at a same radius and increase gradually with the radius. The present disclosure changes electromagnetic parameters at each point of the metamaterial through punching or by attaching man-made microstructures so that the electromagnetic wave can be diverged after passing through the metamaterial. The metamaterial of the present disclosure features a simple manufacturing process and a low cost, and is easy to be implemented. Moreover, the metamaterial of the present disclosure has small dimensions and does not occupy a large space, so it is easy to miniaturize apparatuses made of the metamaterial of the present disclosure.