Abstract:
An artificial electromagnetic material is provided. The artificial electromagnetic material includes at least one material sheet. Each material sheet includes a laminary substrate and a plurality of artificial microstructures attached to the substrate. The substrate is made from transparent material. Because the substrate is made from transparent material, therefore the artificial electromagnetic material is capable of generating responses to visible light wave and convergence, divergence, deflection of visible light wave and so on can be achieved.
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 disclosure relates to an electromagnetically transparent metamaterial, which comprises a substrate and a plurality of man-made metal microstructures arranged periodically inside the substrate. When an electromagnetic wave propagates through the metamaterial, each of the man-made metal microstructures is equivalent to two identical two-dimensional (2D) circuits, which are placed respectively in a direction perpendicular to an incident direction of the electromagnetic wave and in a direction parallel to the incident direction of the electromagnetic wave, and each of which comprises an inductor branch and two identical capacitor branches that are symmetrically connected in parallel with the inductor branch. The 2D circuits are associated with a waveband of the electromagnetic wave so that both a dielectric constant and a magnetic permeability of the metamaterial are substantially 1 when the electromagnetic wave propagates through the metamaterial.
Abstract:
The present disclosure discloses a unipolar antenna, a wireless access apparatus and a wireless router. The unipolar antenna of the present disclosure comprises a medium substrate, as well as a power feeding point, a feeder line and a metal structure that are disposed on a surface of the medium substrate. The feeder line is connected to the power feeding point, and the feeder line and the metal structure are coupled with each other. The unipolar antenna, the wireless access apparatus and the wireless router of the present disclosure can transmit or receive electromagnetic signals of two or more different wavebands simultaneously so that they can operate within multiple operation wavebands in a single-frequency mode and operate within different operation wavebands simultaneously in a multi-frequency mode. Thereby, the antenna can be miniaturized on the premise of satisfying the performance requirements of the communication devices.
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. In the front feed satellite television antenna of the present invention, conventional parabolic antenna is replaced by the sheet-shaped metamaterial panel, thus facilitating manufacturing and processing, and further reducing costs. In addition, the present invention also provides a satellite television receiver system having the front feed satellite television antenna.
Abstract:
An antenna comprises a medium substrate and grounding units attached on the medium substrate. The antenna further comprises a metal structure attached on the medium substrate. The metal structure comprises an electromagnetic response unit, a metal open ring enclosing the electromagnetic response unit and a feeding point connected to an end of the metal open ring. The electromagnetic response unit comprises an electric-field coupling structure. This design increases the physical length of the antenna equivalently, so an RF antenna operating at an extremely low frequency can be designed within a very small space. This can eliminate the physical limitation imposed by the spatial area when the conventional antenna operates at a low frequency, and satisfy the requirements of miniaturization, a low operating frequency and broadband multi-mode services for the mobile phone antenna. Meanwhile, a solution of a lower cost is provided for design of the antenna of wireless communication apparatuses.
Abstract:
The present invention relates to a man-made composite material and a man-made composite material antenna. The man-made composite material is divided into a plurality of regions. An electromagnetic wave is incident on a first surface exits from a second surface of the man-made composite material opposite to the first surface. A line connecting a radiation source to a point on the bottom surface of the ith region and a line perpendicular to the man-made composite material form an angle θ therebetween, which uniquely corresponds to a curved surface in the ith region. A set formed by points on the bottom surface of the ith region that have the same angle θ forms a boundary of the curved surface to which the angle θ uniquely corresponds. The refraction, diffraction and reflection of the present invention at the abrupt transition points can be reduced.
Abstract:
The present embodiment relates to a metamaterial for deflecting electromagnetic wave, includes a functional layer made up by at least one metamaterial sheet layer, each of the metamaterial sheet layers including a substrate and a number of artificial microstructures attached onto the substrate. The functional layer is divided into several strip-like regions. The refractive indices in all the strip-like regions continually increase along the same direction and there are at least two adjacent first and second regions, wherein, the refractive indices in the first region continually increase from n1 to n2, the refractive indices in the second region continually increase from n3 to n4, and n2>n3. The metamaterial of the present invention that deflects electromagnetic wave has a number of regions disposed thereon. In each region, the refractive indices can continuously increase or decrease so that the electromagnetic waves within the regions will be slowly deflected.
Abstract:
The present invention provides a method for manufacturing a metamaterial dielectric substrate, and a metamaterial dielectric substrate manufactured using the same. According to the metamaterial dielectric substrate and the manufacturing method thereof of the present invention, an arrangement rule of pin-shaped articles in a pin-shaped array may he predetermined during the manufacture, such that the formed metamaterial dielectric substrate has pinhole-shaped arrays arranged in a specific rule. Therefore, the metamaterial dielectric substrate may implement specific modulation functions on an electromagnetic wave such as electromagnetic wave divergence, convergence or deflection, thereby providing a more flexible design for function application of the metamaterial.
Abstract:
An artificial microstructure comprises two “I” shaped metal wire structures. The two “I” shaped metal wire structures are separated to each other. The present invention also discloses an artificial electromagnetic material using the artificial microstructures. The artificial electromagnetic material has high resonance frequency, wide effective frequency band and has a wide application range.