A system includes one or more antennas and a processor to communicate with a predetermined target using 5G or 6G protocols.

An antenna for a wireless communication device, such as a Wi-Fi access point is provided. The antenna includes an electrically conductive radiation structure including a plurality of radially extending radiation slots, each of which has an open outer end at a perimeter of the electrically conductive radiation structure and defines a respective radiation portion of the electrically conductive radiation structure. The antenna includes a feeding network configured to feed an RF signal to the electrically conductive radiation structure, the feeding network includes a plurality of feeding arms configured to feed the RF signal into each radiation portion of the electrically conductive radiation structure for exciting each radiation portion to emit electromagnetic waves. The antenna includes a grounding structure including an electrically conductive grounding surface, which is spaced from and faces each radiation portion of the electrically conductive radiation structure for guiding the electromagnetic waves emitted by each radiation portion.

An array antenna capable of steering a beam in a first communication node of a wireless communication system may comprise: a plurality of single antennas each capable of variably adjusting a beam steering direction; a plurality of beamforming control units each of which is connected to each of the plurality of single antennas to control a beamforming operation of each of the plurality of single antennas; and an array antenna control unit connected to the plurality of beamforming control units to control a beamforming operation of the entire array antenna, wherein the plurality of single antennas are arranged in a cylindrical shape and are installed to face a direction opposite to a central direction of the cylinder shape, and the array antenna is configured to steer a beam to a predetermined area around the first communication node through at least one single antenna among the plurality of single antennas.

A radio frequency (RF) jamming device includes a differential segmented aperture (DSA), a jammer source outputting a jamming signal at one or more frequencies or frequency bands to be jammed, and RF electronics that amplify and feed the jamming signal to the DSA so as to emit a jamming beam. The DSA includes an array of electrically conductive tapered projections, and the RF electronics comprise power splitters configured to split the jamming signal to aperture pixels of the DSA. The aperture pixels comprise pairs of electrically conductive tapered projections of the array of electrically conductive tapered projections. The RF electronics further comprise pixel power amplifiers, each connected to amplify the jamming signal fed to a single corresponding aperture pixel of the DSA. The RF jamming device may include a rifle-shaped housing, with the DSA mounted at a distal end of the barrel of the rifle-shaped housing.

A three-dimensional, 360 degree, omnidirectional multiple-input multiple-output wireless systems is described herein. The multiple-input multiple-output wireless system is comprised of a plurality of radio inputs, a plurality of radio-frequency converters, an RF signal distribution network, a plurality of transceivers, and a plurality of antennas. The multiple-input multiple-output wireless system may further have a plurality of planar stacks.

An antenna includes one or more elementary antennas with non-coplanar planar loops extending about a main axis in respective inclined planes. Each elementary antenna is formed by tracks of a structure printed on a circuit support extending in the inclined plane, with two imbricated planar loops tuned on frequencies includes in two respective distinct WiFi frequency bands. With a flexible circuit support, an antenna housing of the drone includes a conformed hollow cavity comprising a plurality of inclined planar faces, which are the counterparts of the inclined planes of the elementary antennas, against which bear these latter after deformation of the flexible support.

A portable radar system is disclosed including a mast, a fabric enclosure being sized and dimensioned to be extendable in a covering relation with at least part of the mast; and an antenna comprising at least one element, wherein said antenna is arranged on the fabric enclosure and is positioned to illuminate or receive reflections from a target when the fabric enclosure is in a covering relation with the mast and the mast is deployed.

A communication device includes a first antenna element, a second antenna element, a third antenna element, a fourth antenna element, a fifth antenna element, a sixth antenna element, a seventh antenna element, an eighth antenna element, and a PCB (Printed Circuit Board). The PCB has a first side and a second side positioned opposite to each other. At least one of the first antenna element, the second antenna element, the third antenna element, the fourth antenna element, the fifth antenna element, the sixth antenna element, the seventh antenna element, and the eighth antenna element is adjacent to the first side of the PCB. The other(s) of the first antenna element, the second antenna element, the third antenna element, the fourth antenna element, the fifth antenna element, the sixth antenna element, the seventh antenna element, and the eighth antenna element is/are adjacent to the second side of the PCB.

A small cell cellular base station includes an eight port radio and an eight-port base station antenna that has four linear arrays of dual-polarized radiating elements. Each of the linear arrays has a different azimuth boresight pointing direction and each dual-polarized radiating element includes first and second radiators that have respective directional radiation patterns. The radio is configured to determine and apply a first set of amplitude and phase weights to RF signals that are received through the eight ports of the antenna, and to apply a second set of amplitude and phase weights to RF signals that are output by the radio to the eight ports of the antenna.

Antenna systems have an RF connector, a PCB dipole antenna, and a radome. The RF connector provides a direct connection to the PCB and limits PIM. An omni-directional WiFi antenna has a pair of horizontal dipole antennas on a PCB having different wavelengths and same frequency. An omni-directional UMTS dual antenna has a vertical arrangement of two independent antennas on a PCB and has a jumper printed circuit board connecting the RF connector to the upper antenna. Corresponding connectors, radomes, and ways of combining antenna elements on a single PCB are also disclosed. A single frequency omnidirectional antenna includes both half and full wavelength dipole elements. A plus-shaped radome enhances the omnidirectional radiation pattern of the enclosed antenna. A jumper printed circuit board allows independent antennas on a single circuit board without the degradation of internal coaxial connections. The connector provides a direct interface with a circuit board to reduce the number of parts and also reduce passive intermodulation.