Disclosed is a dual-mode antenna array system (DAAS) for directing and steering an antenna beam that includes an approximately square feed (ASF) waveguide, a plurality of first-mode directional couplers (FMDCs), a plurality of second-mode directional couplers (SMDCs), a plurality of first-mode radiating elements (FMREs), and a plurality of second-mode radiating elements (SMREs). The ASF waveguide includes a first ASF waveguide wall, a second ASF waveguide wall, an ASF waveguide length, a first-feed waveguide input at a first-end of the ASF feed waveguide, and a second-feed waveguide input at a second-end of the ASF feed waveguide. The plurality of FMDCs are on the first ASF waveguide wall and the plurality of SMDCs are on the second ASF waveguide wall. The plurality of FMREs are in signal communication with the plurality of FMDCs and the plurality of SMREs are in signal communication with the plurality of SMDCs.

An antenna structure configured for simultaneous communication over multiple channels or with multiple locations. In certain examples the antenna system includes an antenna, such as a horn antenna, a lens, or a horn-lens combination, for example, and a focal plane array located near the focal point of the antenna. The focal plane array can be made up of a plurality of sub-wavelength elements, and is configured to simultaneously excite and/or receive a plurality of beams, each having an independent pointing angle to communicate with multiple fixed or non-fixed communication terminals in different locations.

Aspects of the subject disclosure may include, for example, a system for generating first electromagnetic waves and directing instances of the first electromagnetic waves to an interface of a transmission medium to induce propagation of second electromagnetic waves having a dominant non-fundamental wave mode. Other embodiments are disclosed.

A combiner network is provided. The combiner network may include a combiner of a first type. The combiner network may further include a combiner of a second type. The combiner of a first type includes a first plurality of waveguide ports and an H-plane combiner connected to an E-plane combiner. The combiner of the second type includes a second plurality of waveguide ports and an H-plane combiner including a U-bend.

A combiner network is provided. A combiner network may include a corporate combiner. The corporate combiner may include a first plurality of radiation elements. The corporate combiner may include a first H-plane combiner connected to the first plurality of radiation elements and connected by a U-bend to a first E-plane combiner. The corporate combiner may include a second H-plane combiner connected to the first E-plane combiner. The corporate combiner may further include a first port. A plurality of corporate combiners may be assembled together as a combiner network.

An antenna array is provided that includes a plurality of radiating elements and one or more combiners. The plurality of radiating elements and the combiners are formed as a single indivisible metal element by use of additive manufacturing processes.

In accordance with one or more embodiments, an antenna system includes a dielectric antenna having a feed-point, wherein the dielectric antenna is a single antenna having a plurality of antenna beam patterns. At least one cable having a plurality of conductorless dielectric cores is coupled to the feed-point of the dielectric antenna, each of the plurality of conductorless dielectric cores corresponding to one of the plurality of antenna beam patterns. A controller, selects one of the plurality of antenna beam patterns and generates a control signal in response thereto. A core selector, responsive to the control signal, couples electromagnetic waves from a source to a selected one of the plurality of conductorless dielectric cores, the selected one of the plurality of conductorless dielectric cores corresponding to the selected one of the plurality of antenna beam patterns.

A combiner network is provided. A combiner network may include a corporate combiner. The corporate combiner may include a first plurality of radiation elements. The corporate combiner may include a first H-plane combiner connected to the first plurality of radiation elements and connected by a U-bend to a first E-plane combiner. The corporate combiner may include a second H-plane combiner connected to the first E-plane combiner. The corporate combiner may further include a first port. A plurality of corporate combiners may be assembled together as a combiner network.

A horn antenna module is provided. The horn antenna module includes a waveguide and an antenna cover. The waveguide includes a plurality of waveguide paths. The antenna cover covers one end of the waveguide. The antenna cover includes a plurality of protrusions and a bottom surface. The protrusions are formed on the bottom surface. The protrusions correspond one-to-one with the waveguide paths. Each protrusion has a top surface and a lateral surface. The lateral surface is located between the top surface and the bottom surface. The top surface is planar.

A radar antenna assembly includes a transmitting antenna including transmitting horns and receiving antennas including receiving horns. The receiving antennas are at regular intervals in a second direction perpendicular to a first direction, and the transmitting antenna is adjacent to the receiving antennas in the second direction. The transmitting horns are at regular intervals in the first direction, and the transmitting antenna includes an oblique arrangement portion and a reverse oblique arrangement portion. The reverse oblique arrangement portion is adjacent to the oblique arrangement portion in the first direction, and the oblique arrangement portion and the reverse oblique arrangement portion are symmetrical to each other about a plane perpendicular to the first direction. The transmitting horns included in the oblique arrangement portion or the reverse oblique arrangement portion are adjacent to each other in the first direction with at least two sorts of magnitude of displacement therebetween.