An integral waveguide device herein includes a polarizer component comprising a waveguide and a dielectric slab, the dielectric slab configured to change a polarization of a signal passing through the waveguide. The integral waveguide device also includes a feed horn for conveying signals between the waveguide and a parabolic antenna. The waveguide of the polarizer and the feed horn are manufactured as an integral component with the feed horn disposed at a first end of the waveguide.

An integral waveguide device herein includes a polarizer component comprising a waveguide and a dielectric slab, the dielectric slab configured to change a polarization of a signal passing through the waveguide. The integral waveguide device also includes a feed horn for conveying signals between the waveguide and a parabolic antenna. The waveguide of the polarizer and the feed horn are manufactured as an integral component with the feed horn disposed at a first end of the waveguide.

A horn feed including: a central conduit extending axially in a first direction from a first portion that is configured to be relatively distal from a sub-reflector and including a first aperture and a second portion that is configured to be relatively proximal to the sub-reflector and including a second aperture; and an interface configured to connect to a dielectric support including an outer cylindrical dielectric wall of a substantially cylindrical shape and an inner cylindrical dielectric wall of a substantially cylindrical shape, wherein the central conduit, the outer cylindrical dielectric wall and the inner cylindrical dielectric wall are co-axial.

A horn feed including: a central conduit extending axially in a first direction from a first portion that is configured to be relatively distal from a sub-reflector and including a first aperture and a second portion that is configured to be relatively proximal to the sub-reflector and including a second aperture; and an interface configured to connect to a dielectric support including an outer cylindrical dielectric wall of a substantially cylindrical shape and an inner cylindrical dielectric wall of a substantially cylindrical shape, wherein the central conduit, the outer cylindrical dielectric wall and the inner cylindrical dielectric wall are co-axial.

The disclosure relates to an antenna radiation device in which dual band and dual polarization are realized, and according to the disclosure, a high-frequency band antenna radiation device and a low-frequency band antenna radiation device are integrated, and power feeding slot substrates in which a high-frequency power feeding slot, a low-frequency power feeding slot, and a low-frequency radiation slot are formed are stacked, so that a high-frequency signal and a low-frequency signal may be transmitted and received through a single antenna radiation device and dual polarization may be implemented, using electromagnetic wave induction and coupling effects.

A radar level gauge system for determining the filling level of a product in a tank, comprising a transceiver, an elongated propagation device, and processing circuitry coupled to the transceiver for determining the filling level. The propagation device comprises a first propagation device part comprising a cuff portion; and a second propagation device part comprising an end portion inserted in the cuff portion and joined together with the cuff portion by at least a first fastening arrangement. The first fastening arrangement comprises: a tab formed in one of the cuff portion and the end portion; and a recess formed in the other one of the cuff portion and the end portion. The tab is received by the recess to interact with the recess to prevent relative movement between the first propagation device part and the second propagation device part at least in the longitudinal direction.

A horn antenna configured for use in a radio frequency (RF) anechoic test chamber is provided. The horn antenna includes one or more conductive radiating elements. The horn antenna further includes an electromagnetic interference (EMI) suppressing material covering at least a portion of a surface of the one or more conductive radiating elements such that the EMI suppressing material at least partially suppresses a surface current associated with the surface of the one or more conductive radiating elements during a test operation.

The present disclosure provides an antenna, an antenna device, a fabricating method of the antenna, and a fabricating method of the antenna device, and relates to the field of antenna technology. The antenna includes a first substrate; a base material layer on the first substrate and having a plurality of antenna cavities arranged in an array therein; and a conductive layer on an inner side of each of the plurality of antenna cavities, each of the plurality of antenna cavities and the conductive layer on the inner side thereof forming an antenna unit, wherein each of the plurality of antenna cavities includes a first opening, and an aperture of the first opening at a position of the antenna cavity close to the first substrate is smaller than an aperture of the first opening at a position of the antenna cavity away from the first substrate.

The present disclosure provides an antenna, an antenna device, a fabricating method of the antenna, and a fabricating method of the antenna device, and relates to the field of antenna technology. The antenna includes a first substrate; a base material layer on the first substrate and having a plurality of antenna cavities arranged in an array therein; and a conductive layer on an inner side of each of the plurality of antenna cavities, each of the plurality of antenna cavities and the conductive layer on the inner side thereof forming an antenna unit, wherein each of the plurality of antenna cavities includes a first opening, and an aperture of the first opening at a position of the antenna cavity close to the first substrate is smaller than an aperture of the first opening at a position of the antenna cavity away from the first substrate.

This disclosure is directed to a broadband notch radiator antenna. In one aspect, a broadband notch radiator antenna includes a dielectric substrate having a first surface and a second surface. A conductive material is disposed on the first surface to form a horn-shaped dielectric notch antenna. The conductive material disposed on the first surface includes a meander line antenna connected to an edge of the horn-shaped notch. One or more microstrip feed lines and one or more inductance matching circuits are disposed on the second surface. The one or more inductance matching circuits are connected to the one or more feed lines.