An antenna apparatus and a control method are provided. The antenna apparatus includes a first antenna, a second antenna, and a movable mechanism. The first antenna is operated on a first frequency band. The second antenna surrounds the first antenna and is operated on a second frequency band. The first and second antennas are disposed on the movable mechanism. The movable mechanism is further configured to steer a direction of the first and second antennas. Accordingly, the requirements of multiple frequency bands and beam scanning may be fulfilled.

An example antenna system includes a plurality of dielectric rod stacks and a control circuit. The control circuit includes a plurality of independently controlled output circuit boards. Each independently controlled output circuit board includes a respective dielectric rod stack. The respective dielectric rod stack includes a plurality of respective dielectric rods. The control circuit selects: (i) the dielectric rod stacks, and (ii) the respective dielectric rods of the respective dielectric rod stack to adjust a beam of emitted or received radio frequency (RF) waves.

The disclosed structures and methods are directed to transmission and reception of a radio-frequency (RF) wave. An antenna comprises a stack-up structure having a first control layer, a second control layer, a first and a second parallel-plate waveguides, and a plurality of through vias. The antenna further comprises a first central port and a second central port being configured to radiate RF wave into the two parallel-plate waveguides independently; vertical-polarization peripheral radiating elements integrated with the first control layer and configured to radiate RF wave in vertical polarization; and horizontal-polarization peripheral radiating elements integrated with the second control layer and configured to radiate RF wave in horizontal polarization. A central port for transmission of RF wave into the stack-up structure of the antenna is also provided. Each vertical-polarization peripheral radiating element is collocated with one of the horizontal-polarization peripheral radiating element such that they cross each other, and that a RF wave radiation beam may be steered at an angle of 0 to 360 degrees in the plane of the stack-up structure, around the central port.

A radar antenna includes a plurality of horns in the annular space of a munition nose cone. The horns are disposed near the exterior surface of the nose cone. In a further aspect, the nose cone may be injection molded or additively manufactured so that the horns are embedded a known distance from the exterior surface. In a further aspect, the horns placed in either a transmit mode or a receive mode so as to maintain a minimum special separation between transmitting horns and receiving horns.

Invention of electronic cluster scanning method for Geodesic Sphere Phased Array Antenna System that is simultaneously faster cheaper and simpler is presented in this patent. This invention is based on recognition and skillful exploitation of multi-level symmetry properties inherent in the truncated icosahedron based geodesic sphere phased array antenna structure described in an earlier invention. The cluster scanning method employs cluster switching with limited angle electronic scanning involving inter-twined hexagonal sub-array centered clusters and pentagonal sub-array centered clusters.

A unmanned aerial vehicle can include a modem comprising a first antenna port and a second antenna port, an omnidirectional antenna connected to the first antenna port, and antennas configured to generate a directional transmission pattern connected to the second antenna port, the antennas including (a) an array of omni-directional antennas and (b) multiple directional antennas

The invention discloses a planar end-fire pattern reconfigurable antenna, including a dielectric substrate, a radiation patch, a ground plane, a switch and bias circuit, and a coaxial cable, wherein the dielectric substrate includes a first surface and a second surface in opposite, the radiation patch is attached to the first surface of the dielectric substrate, the ground plane is attached to the second surface of the dielectric substrate, the switch and bias circuit is arranged in a slot of the ground plane, the coaxial cable includes an outer conductor and an inner conductor, the outer conductor is connected to the ground plane, the inner conductor penetrates through the dielectric substrate and is connected to the radiation patch, and the coaxial cable is arranged at a geometric center of the planar end-fire pattern reconfigurable antenna.

Disclosed are an antenna system, a mobile terminal, and an antenna system switching method. The antenna system includes: at least one switch and a plurality of antenna units; wherein each of the at least one switch is configured to switch connection states of the plurality of antenna units to cause at least one of the plurality of antenna units in a connected state to generate beams and perform scanning in space.

An example antenna system includes a plurality of dielectric rod stacks and a control circuit. The control circuit includes a plurality of independently controlled output circuit boards. Each independently controlled output circuit board includes a respective dielectric rod stack. The respective dielectric rod stack includes a plurality of respective dielectric rods. The control circuit selects: (i) the dielectric rod stacks, and (ii) the respective dielectric rods of the respective dielectric rod stack to adjust a beam of emitted or received radio frequency (RF) waves.

The invention discloses a planar end-fire pattern reconfigurable antenna, including a dielectric substrate, a radiation patch, a ground plane, a switch and bias circuit, and a coaxial cable, wherein the dielectric substrate includes a first surface and a second surface in opposite, the radiation patch is attached to the first surface of the dielectric substrate, the ground plane is attached to the second surface of the dielectric substrate, the switch and bias circuit is arranged in a slot of the ground plane, the coaxial cable includes an outer conductor and an inner conductor, the outer conductor is connected to the ground plane, the inner conductor penetrates through the dielectric substrate and is connected to the radiation patch, and the coaxial cable is arranged at a geometric center of the planar end-fire pattern reconfigurable antenna.