36results about How to "Mitigate problems caused by mutual interference" patented technology

The invention relates to an antenna. The antenna comprises a radiation source and a collecting unit. The collecting unit has the function of collecting electromagnetic wave and is used for converting electromagnetic wave emitted by the radiation source into plane wave. The collecting unit comprises a functional dielectric plate and an impedance matching element. The impedance matching element is disposed on a first lateral surface of the functional dielectric plate and is tightly attached to the first lateral surface of the functional dielectric plate. The impedance matching element comprises a plurality of first impedance matching layers. Refractive index distribution for each impedance matching layer is indicated in such way that the functional dielectric plate includes a plurality of concentric rings which have lateral curved surfaces and attach with one another. The bottom radius of each ring is smaller than the top radius. The refractive index distribution of the impedance matching layers is designed, so that reflection interference and loss are decreased. Jumps of the refractive index of the functional dielectric layer are curved, so that refraction, diffraction and reflection effects of the jumps are reduced greatly. The problems caused by mutual interference are relieved, and the antenna has better properties.

The invention relates to a convergence element which comprises a functional dielectric slab and an impedance matching element, wherein the impedance matching element is arranged on a first lateral surface of the functional dielectric slab and closely attached to the first lateral surface of the functional dielectric slab; the impedance matching element comprises a plurality of first impedance matching layers, and the refractive index distribution of each impedance matching layer is represented in the specification; the functional dielectric slab is divided into a plurality concentric annular ring bodies, of which the lateral surfaces are curved surfaces and closely attached to each other; the radius of the bottom surface of each annular ring body is less than that of the top surface; and given that the included angle between the connecting line between the radiation source and one point on the bottom surface of the i annular ring body and the straight line perpendicular to the functional dielectric slab is theta, the refractive index of each annular ring body gradually deceases as the included angle theta increases. The refractive index distribution of the impedance matching layers is designed to reduce the reflective jamming and loss; and the jump of refractive index of the functional dielectric layer is designed as a curved surface, thereby greatly reducing the refraction, diffraction and reflection effects at the jump and relieving the problem of mutual interference, so that the convergence element has more excellent properties.

The invention relates to an artificial composite material and an artificial composite material antenna. The artificial composite material is oppositely arranged in the electromagnetic wave propagation direction of a radiation source, wherein the included angle between the line connecting the radiation source and a point on a first surface of the artificial composite material and a straight line vertical to the artificial composite material is supposed to be theta; the included angle theta only corresponds to a curved surface in the artificial composite material; the refractive index of each part on the curved surface is the same; the generatrix of the curved surface is an elliptic arc; the refractive index of the artificial composite material gradually decreases along with increase of the included angle theta; and the electromagnetic waves are jetted from the top surface of each torus in parallel after passing through the artificial composite material. The artificial composite material and the artificial composite material antenna have the following beneficial effects that by designing the jump of the refractive index of the artificial composite material into a curved surface, the refraction, diffraction and reflection effects in the jump positions are greatly reduced and the problems caused by mutual interference are reduced, so that the artificial composite material and the artificial composite material antenna have more excellent performances.

The invention relates to a metamaterial and a metamaterial antenna. The metamaterial antenna comprises a circular ring body with curved surfaces as side surfaces, wherein the radius of the bottom surface of the circular ring body is smaller than that of the top surface; an included angle between a connecting line of a radiation source and one point on the bottom surface of the circular ring body, and a straight line of the radiation source perpendicular to the metamaterial is set to be Theta; the included angle Theta only corresponds to one curved surface inside the circular ring body; the refractive indexes of all the parts on the curved surface only corresponding to the included angle Theta are the same; and the refractive index of the circular ring body decreases gradually as the included angle Theta becomes larger. According to the invention, the jump of the refractive index of the metamaterial is designed as a shape of a curved surface, so that the effects of refraction, diffraction and reflection at jumping parts are reduced greatly, and problems caused by mutual interference are lightened. Therefore, the metamaterial and the metamaterial antenna have more excellent performance.