This document describes a single-layer air waveguide antenna integrated on a circuit board. The waveguide guides electromagnetic energy through channels filled with air. It is formed from a single layer of material, such as a sheet of metal, metal-coated plastic, or other material with conductive surfaces that is attached to a circuit board. A portion of a surface of the circuit board is configured as a floor of the channels filled with air. This floor is an electrical interface between the circuit board and the channels filled with air. The single layer of material is positioned atop this electrical interface to define walls and a ceiling of the channels filled with air. The single layer of material can be secured to the circuit board in various ways. The cost of integrating an air waveguide antenna on to a circuit board this way may be less expensive than other waveguide-manufacturing techniques.

Disclosed is an antenna device, antenna system, and methods to create, and install or modify, an antenna profile for an antenna device so as to direct remotely the propagation of radio frequency signal from the antenna device to targeted radio frequency geographic coverage areas. Ports may be selected to activate spatial segments created by the configuration of the reflectors, joined about a cylindrical core, which may be quadrants when the reflectors are configured into a cross-like shape. The system provides aid in orienting an antenna, upon installation, to a pre-designated geographic heading. Optionally, the tilt of each quadrant of an antenna device may be determined so as to ensure proper radio frequency coverage.

Antennas and methods for using the same are described. In one embodiment, the antenna comprises an aperture having a plurality of radio-frequency (RF) radiating antenna elements, the plurality of RF radiating antenna elements being grouped into three or more sets of RF radiating antenna elements, with each set being separately controlled to generate a beam at a frequency band in a first mode.

Smart livestock management method and system based on Internet of things. The smart livestock management system may include a gate. The gate may include a frame forming a moving path of an animal, an external device disposed in the frame and configured to radiate electromagnetic waves toward the moving path and to receive identification information and bio information of the animal from an implant device inserted into the body of the animal passing through the moving path, and a camera configured to obtain image data of the animal passing through the moving path.

Smart livestock management method and system based on Internet of things. The smart livestock management system may include a gate. The gate may include a frame forming a moving path of an animal, an external device disposed in the frame and configured to radiate electromagnetic waves toward the moving path and to receive identification information and bio information of the animal from an implant device inserted into the body of the animal passing through the moving path, and a camera configured to obtain image data of the animal passing through the moving path.

Example radar systems are presented herein. A radar system may include an input layer having a feed waveguide and a first portion of a first waveguide section. The antenna system also includes a first dividing layer having a second portion of the first waveguide section and a first portion of a second waveguide section. The antenna system also includes a second dividing layer having a second portion of the second waveguide section and a first portion of a third waveguide section. Additionally, the antenna system includes an antenna layer having a plurality of radiating elements arranged in a linear array and a second portion of the third waveguide section. The antenna system further includes a path length from the feed waveguide to each radiating element is the same as the path length for each other radiating element.

The present disclosure relates to base station antennas and base stations. One example base station antenna comprises an antenna array, a reflecting plate with a hole, a microstrip circuit comprising a first conductor strip, and a stripline cavity structure comprising a second conductor strip. The microstrip circuit and the stripline cavity structure are respectively located at opposite sides of the reflecting plate. The first conductor strip and the second conductor strip are connected through the hole.

A sensing system is provided that includes a first sub-sensing system having a first azimuth plane. The first sub-sensing system includes a Gradient-index lens, and a first plurality of antenna elements arranged adjacent to the Gradient-index lens and configured to receive a first signal emanating from a first field of view. The sensing system also includes a second sub-sensing system having a second azimuth plane oriented at an angle with respect to the first azimuth plane and a second plurality of antenna elements configured to receive a second signal emanating from a second field of view.

An omnidirectional vertically polarized antenna. A number of antenna elements are each fabricated on a backing, such as a printed circuit board. The front of each antenna element has conductive strips and slots, arranged in an alternating pattern. The back of each antenna element has an antenna feed circuit. An electrically absorptive layer is attached to the back of each antenna element. The antenna elements are assembled together in a nonconductive housing with circumferentially arranged compartments that receive the antenna elements.

Methods and apparatus for a radiator assembly having a feed circuit with an air interface to a quadridge feed structure to excite an antenna, such as a stacked patch antenna. Embodiments of the assembly can provide enhanced bandwidth, scan angle performance, and coincident phase centers for dual-linear polarizations.