The antenna includes a first antenna unit and a second antenna unit. The first antenna unit and the second antenna unit are disposed on the same surface of a substrate. The first antenna unit includes a first primary radiation unit and a first secondary radiation unit, and the second antenna unit includes a second primary radiation unit and a second secondary radiation unit. A gap exists between the first primary radiation unit and the second primary radiation unit. The first secondary radiation unit is connected to one end of the first primary radiation unit that is away from the second primary radiation unit, the second secondary radiation unit is connected to one end of the second primary radiation unit that is away from the first primary radiation unit, and the first secondary radiation unit and the second secondary radiation unit are located on the same side of the substrate.

Provided is a flying body comprising an antenna for forming a communication area by a beam irradiated toward the ground to provide wireless communication service for a user terminal in the communication area; and an attachment/detachment part configured to physically attach to and detach from another flying body for combining with and separating from another flying body. Provided is also a flying body comprising an antenna for forming a communication area by a beam irradiated toward the ground to provide wireless communication service for a user terminal in the communication area; a cable having an attachment/detachment part configured to physically attach to and detach from another flying body; a cable communication unit configured to communicate with another flying body via the cable; and an electric power transmission unit configured to transmit electric power with another flying body via the cable.

A stripline conformal patch antenna is disclosed. The antenna comprises circuit board that includes a composite dielectric which has a bottom surface and a top surface. The bottom surface comprises a bottom surface conductive ground plane. The top surface comprises an array of a plurality of conductive antenna elements and a top surface conductive ground plane disposed around the plurality of antenna elements. The stripline conformal antenna also includes a conductor, extending from an antenna input through the composite dielectric, the conductor forming a stripline between the top surface conductive ground plane and the bottom surface conductive ground plane. A plurality of electrical vias extend through the composite dielectric, electrically shorting the bottom surface conductive ground plane and the top surface conductive ground plane.

An elongate antenna assembly (1) for an aircraft including a structural section (3) and an antenna element (5), wherein the structural section (3) includes an elongate leading edge section (7) extending in a longitudinal direction (13) of the antenna assembly, a first lateral section (9), and a second lateral section (11), wherein the leading edge section (7) is curved such that the leading edge section (7) comprises a convex outer surface (15) extending in the longitudinal direction (13) of the antenna assembly (1) on a convex side (19) of the antenna assembly.

A wideband dual polarized antenna array system, with minimal number of RF ports that enables wideband array frequency ratios of 25:1 to 120:1. Reduced grating lobe performance is enabled by employing antennas-within-antennas. Orientation and spacing of antennas in novel methodologies further reduces sidelobes and grating lobes. Finally, this technology reduces the number of RF ports, compared to Tightly Coupled Dipole Antenna (TCDA) arrays by 10× to 25× times.

A multi-function radio frequency (MFRF) system may deploy groups of small or micro-sized unmanned aircraft systems (UAS) to achieve various MFRF functions and mission objectives. Each member UAS may incorporate structurally integrated/embedded, conformal/appliqu, or mechanically deployable antenna elements, or may utilize characteristic mode transducers to excite conductive exterior surfaces of the UAS, such that each UAS may maximize its limited size or surface area to emit MFRF radiation according to a variety of MFRF operating modes. Member UAS may be fashioned by three-dimensional additive manufacturing (3DAM) techniques. Each UAS may coordinate their positioning and MFRF emissions with other member UAS to collectively form synthetic apertures and swarms capable of MFRF functionalities not achievable by a single UAS. UAS swarms may form new subswarms or dynamically reconfigure depending on changing mission objectives or battlefield conditions.

A wideband dual polarized antenna array system, with minimal number of RF ports that enables wideband array frequency ratios of 25:1 to 120:1. Reduced grating lobe performance is enabled by employing antennas-within-antennas. Orientation and spacing of antennas in novel methodologies further reduces sidelobes and grating lobes. Finally, this technology reduces the number of RF ports, compared to Tightly Coupled Dipole Antenna (TCDA) arrays by 10 to 25 times.

Wireless communication is provided over an extended distance using a line or a series of drones traveling along a transmission path between a transmitter and a receiver. The transmitter sends a data signal to a first drone that is within range of the transmitter. The first drone sends the data signal to an adjacent drone in the line of drones which retransmits the data signal to the next drone in line. The data signal is transmitted between drones until it reaches a final drone within range of the receiver. The final drone transmits the data signal to the receiver. As the drones travel along the transmission path, new drones are launched from a location within range of the transmitter to replace drones that land after transmitting a data signal to the receiver.

In some embodiments, an antenna may include a plurality of reflectarray tiles and a frame including a plurality of frame elements coupled electrically and mechanically. The frame may be configured to conform to a shape of a surface. Each frame element may be configured to receive one of the plurality of reflectarray tiles. In some aspects, the plurality of reflectarray tiles may be illuminated directly or indirectly by a feed.

The present invention provides an unmanned aerial vehicle built-in antenna. The unmanned aerial vehicle built-in antenna includes a substrate and a microstrip antenna disposed on the substrate. The substrate is provided with a first surface and a second surface disposed opposite to each other. The microstrip antenna includes a microstrip feeder, an antenna element arm, a grounding wire and a first grounding terminal that are disposed on the first surface of the substrate, a second grounding terminal disposed on the second surface of the substrate and a feeding coaxial line. A feed terminal of the feeding coaxial line is connected to a first terminal of the microstrip feeder, and a grounding terminal of the feeding coaxial line is connected to the first grounding terminal. A first end of the grounding wire is connected to a first terminal of the antenna element arm, and a second end of the grounding wire is connected to the first grounding terminal. The first grounding terminal is connected to the second grounding terminal.