Provided is a structure including a first conductor plane (101); a second conductor plane (102); a first transmission line (104) that is formed in a layer different from the first conductor plane (101) and the second conductor plane (102); a second transmission line (105) that is disposed so as to face the second conductor plane (102) in a layer opposite to the first transmission line (104) with respect to the second conductor plane (102); a first conductor via (103) that connects one end of the first transmission line (104) with the first conductor plane (101); a second conductor via (106) that connects another end of the first transmission line (104) with one end of the second transmission line (105); and a slit (107) that is formed on the second conductor plane (102).

A multi-layer waveguide including at least three physical layers assembled into a multi-layer waveguide. The layers are a top layer, one or more intermediate layer, and a bottom layer. The multi-layer waveguide further includes a waveguide channel being an elongated aperture in at least one intermediate layer. At least one layer has a metasurface on a first surface facing a first adjoining layer, wherein the metasurface surrounds the elongated aperture and comprise thick and thin sections.

Provided is a wave control medium capable of controlling waves while decreasing the size of a metamaterial or the like and increasing the bandwidth of the metamaterial or the like.

A wave control medium 10 is formed by combining at least two among a coil 11 and a coil 12 which are three-dimensional microstructures formed into a spiral structure, the coil 11 and the coil 12 including any one of a metal, a dielectric material, a magnetic material, a semiconductor, and a superconductor, or a material selected from a plurality of combinations of these materials, and having functions of a capacitor and an inductor. The coil 11 and the coil 12 form a capacitor between the lateral face of the coil 11 and the lateral face of the coil 12 facing each other, and form an inductor by forming a three-dimensional multiple resonance structure by the coil 11 and the coil 12 having a spiral structure.

The current invention describes a method of manufacturing a porous dielectric material, the method comprising (a) providing a porous template, (b) coating the porous template with an inorganic dielectric material or a precursor of an inorganic dielectric material to form a coated porous template, (c) treating the coated porous template to remove the porous template and to form a porous structure of dielectric material from the coating of inorganic dielectric material or precursor of an inorganic dielectric material, and (d) combining the formed porous structure of dielectric material with a coating polymer to form the porous dielectric material. The invention also relates to RF components on a substrate material, with a conductive material deposited on a porous dielectric material.

An epsilon-and-mu-near-zero (EMNZ) metamaterial. The EMNZ metamaterial includes a waveguide. A length l of the waveguide satisfies a length condition according to l≤0.1λ, where λ is an operating wavelength of the EMNZ metamaterial. The EMNZ metamaterial further includes a magneto-dielectric material deposited on a lower wall of the waveguide. The waveguide includes an impedance surface placed on the magneto-dielectric material.

A multi-layer waveguide device, a multi-layer waveguide arrangement, and a method for production thereof, wherein the multi-layer waveguide comprises at least three horizontally divided layers assembled into a multi-layer waveguide. The layers are at least a top layer, an intermediate layer, and a bottom layer, wherein each layer has through going holes extending through the entire layer. The holes are arranged with an offset to adjacent holes of adjoining layers creating a leak suppressing structure.

An electronic device is provided. The electronic device includes a plurality of antenna arrays, a plurality of first printed circuit board (PCB) sets corresponding to the plurality of the antenna arrays, and a second PCB including a power interface, the second PCB may include a feeding line for delivering signals to the antenna elements, a first layer formed away from a first surface of the feeding line, and a second layer formed away from a second surface of the feeding line, and the second layer may include a metamaterial for transforming impedance.

A passive device comprising a hollow waveguide including first and second wall structures extending in a guiding direction, an interconnecting base extending between the wall structures and an enclosure extending between the wall structures, the enclosure being located opposite the interconnecting base; and at least one array of coupled resonant structures enclosed inside the waveguide, the array being configured to provide coupled local resonators and a microwave or millimeter wave frequency passband for providing at least one selected microwave or millimeter wave signal, the array extending along the guiding direction and being located between the wall structures. Each resonant structure extends from the interconnecting base into the hollow waveguide to define a microwave or millimeter wave subwavelength resonant structure, and successive resonant structures are separated by a microwave or millimeter wave subwavelength distance. A resonance frequency of the resonant structures is less than a cut-off frequency of the waveguide.

Disclosed is a ridge guide waveguide including a conductive base, a conductive ridge protruding upward from the conductive base and extending along a predetermined wave transmission direction, an upper conductive wall located over the conductive base and the conductive ridge and spaced apart from the conductive ridge by a gap, and an electromagnetic bandgap structure arranged adjacent to the conductive ridge between the conductive base and the upper conductive wall.

An electromagnetically shielded or reflecting device having a film of shielding or reflecting material and a device for obtaining, in a dielectric material volume, selective propagation of electromagnetic radiation in predetermined frequency band. The shielding or reflecting material includes a polymer, and electrically conducting particles substantially randomly dispersed in the polymer The film is used in shielding objects against electromagnetic radiation across a range of frequencies, The device for obtaining, in a dielectric material volume, selective propagation of electromagnetic radiation in predetermined frequency band includes a dielectric material volume extending from a first surface to a second surface, a first number of cavities, a second number of cavities, each cavity from the first and second numbers extending from the first surface to the second surface, the cavities being substantially randomly distributes on the first or second surface and being filed with an electrically conducting material.