Antenna feed chains and methods are disclosed. An antenna feed chain, include a feed horn having a first cross-polarization performance over a solid angle of interest and a frequency band of interest and a polarizer having a second cross-polarization performance over the solid angle of interest and the frequency band of interest. The polarizer is coupled to the feed horn. The first cross-polarization performance of the feed horn compensates for the second cross-polarization performance of the polarizer over the solid angle of interest and the frequency band of interest.

An electronic assembly and a method for fabricating the same are disclosed. The assembly includes a component carrier, a wireless communication component and an antenna structure. The component carrier has at least one dielectric layer and a metallic layer. The wireless communication component is attached to the component carrier. The antenna structure is formed from a metallic material and is electrically connected with the wireless communication component. An opening formed in the component carrier extends from an upper surface into the interior of the component carrier. The antenna structure is formed at least partially at a wall of the opening.

An antenna system having a transmit assembly with a first set of antenna elements for transmitting signals. Each antenna element in this first set may be disposed from a respective adjacent antenna element by a predetermined azimuthal increment and by a predetermined altitudinal increment. The antenna system further includes a receive assembly having a second set of antenna elements for receiving signals. Each antenna element in this second set may be disposed from a respective adjacent antenna element by a predetermined azimuthal increment and by a predetermined altitudinal increment. The predetermined azimuthal and altitudinal increments of the first set may be substantially similar to the predetermined azimuthal and altitudinal increments, respectively, of the second set.

A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

The invention is an integrated single-piece antenna feed, turnstile polarizer and antenna system suitable for satellite communications. One embodiment of the integrated single-piece antenna includes a circular waveguide input, a circular polarizer, a coaxial feed horn, subreflector and subreflector support. One embodiment of the circular polarizer features four branches of wrapped-single-ridged waveguide.

In one example an apparatus is provided. The apparatus includes a low frequency radiator, a high frequency radiator, a high frequency waveguide that carries high frequency bands to the high frequency radiator, a low frequency coaxial waveguide coupled to the high frequency waveguide in a coaxial structure, wherein the low frequency coaxial waveguide carries low frequency bands to the low frequency radiator and a low frequency combiner in communication with the low frequency coaxial waveguide, wherein the low frequency combiner comprises a circular low frequency waveguide and air dielectric transmission lines formed by air channels formed above and below a plurality of printed circuits in a metal housing.

An antenna system for triple-band satellite communication according to one exemplary embodiment of the present disclosure includes a feed horn device that is configured to simultaneously radiate or absorb wireless signals of triple bands including X, Ku and Ka bands, and a waveguide section that is coupled to the feed horn device and configured to transmit input and output of the wireless signals, wherein the feed horn device includes a corrugation horn that is configured to radiate or absorb the wireless signals of the X and Ku bands, the corrugation horn having a bell-like shape with a plurality of corrugations formed on an inner circumferential surface thereof in a stepped manner, and a dielectric feed horn that is configured to radiate or absorb the wireless signal corresponding to the Ku band and disposed in a central region of the corrugation horn.

A tapered core waveguide which may be configured as a spectral component splitter, a spectral component combiner, and various combinations thereof including a reflective mode of operation. The tapered core waveguide has an aperture and cladding, and is dimensioned such that radiant energy admitted into the core via the aperture and having at least two spectral components would be emitted via the cladding at a location dependent on its frequency and/or its polarization, and that a plurality of spectral components injected to the core via the cladding will be mixed and emitted via the aperture.

A single-piece corrugated component, such as a feed horn, of an antenna includes a main body having a generally hollowed frustopyramidal shape which defines a body axis. The body extends from a base to an aperture, and includes a plurality of generally polygonal corrugations centered about the body axis, respectively. Each corrugation has a frustopyramidal ridge extending inwardly of the main body at an angle relative to the body axis varying between 10-60 degrees in a direction either toward the first end or the second end. A plurality of the frustopyramidal ridges are oriented to have a respective inward virtual extension thereof crossing the body axis and intersecting the main body. A method of manufacturing the corrugated component includes the step of printing the component using an additive manufacturing technology.

The invention discloses a hybrid compact, near-field-to-far-field and direct-far-field test system in an anechoic chamber. It comprises a curved reflector with its primary feed antenna set situated on a lateral side and pointing towards it, a secondary feed antenna set pierced to the reflector or in front of it, and one or several sets of antennas or devices under test (AUT/DUT), and their 3D turntable tower placed at a quiet zone, for which roll, elevation and azimuth can change. In a receive process, the primary antenna set transmits several signals towards the reflector, which reflects these signals towards the quiet zone in the form of planar wavefronts. The secondary antenna set also transmits several signals, but directly towards the quiet zone in spherical wavefronts. The AUT/DUT receives all these signals simultaneously. Through reciprocity, a similar measurement process for transmission can be performed.