Planar waveguide type hyperbolic metamaterial and ultra-small resonant cavity

• Main Authors: JIN YI, HE SAILING, FU JICHAO
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2020
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

The invention discloses a planar waveguide type hyperbolic metamaterial and an ultra-small resonant cavity. A planar waveguide is formed by two metal plates in the height direction, two kinds of dielectric sheets are alternately and periodically arranged in the planar waveguide, the dielectric sheets are uniform sheets with sub-wavelength thicknesses, the height of the dielectric sheets is the same with that of the planar waveguide, and a metal wire array is arranged on interfaces of the adjacent dielectric sheets and used for restraining mode coupling. The planar waveguide works in a TE modeand can be homogenized into a waveguide type metamaterial, an equal-frequency curve is a hyperbolic curve, and a large wave vector which is more than ten times that of a free space wave vector is supported; the shape of the equal-frequency curve can be adjusted through matching of geometrical parameters and dielectric constants of dielectric materials, and different opening directions are achieved; and the metalmaterial i