Patent classifications
H01Q19/106
Cubesat antenna system
A system and method of using a transceiver antenna formed on a fixed outer panel of a cubesat includes electrically coupling an RF feed to a first edge of the outer panel and electrically coupling an RF return to a second edge of the outer panel, the second edge being opposite from the first edge. The RF feed and the RF return being disposed approximately one half a height of the outer panel. An RF distribution plane is electrically coupled to the RF feed and the RF return by substantially equal length circuits. A communication system is electrically coupled to the RF distribution plane. The transceiver antenna does not require deployment and thus improves reliability.
ARRAYS WITH FOLDABLE AND DEPLOYABLE CHARACTERISTICS
Antenna devices are provided, including tightly coupled arrays, transmitarrays, and reflectarrays. An antenna device can include a plurality of substrates each having an antenna element. The substrates can be provided in connected series or in an array. The substrates can be part of an origami array such that the entire array is foldable. The substrates can optionally be attached to a framework that can actuate the substrates to different configurations. By bending, folding, or otherwise repositioning the substrates/array, the electromagnetic characteristics of the antenna device can be easily reconfigured for the desired task.
ANTENNA ASSEMBLY FOR A BEAMFORMING ANTENNA AND BASE STATION ANTENNA
The present invention relates to an antenna assembly for a beamforming antenna, comprising a reflector and an antenna array that includes a plurality of first radiating elements that are arranged as a first vertically extending array, the first radiating elements extending forwardly from the reflector; and a plurality of second radiating elements that are arranged as a second vertically extending array, the second radiating elements extending forwardly from the reflector. Two adjacent first radiating elements are spaced apart from one another by a first distance, and a first radiating element and an adjacent second radiating element are spaced apart from one another by a second distance. The first distance is substantially equal to the second distance. The antenna assembly further comprises a plurality of parasitic elements that are placed along sides of the first and second of the vertically extending arrays.
Apparatus for Reflecting Electromagnetic Waves and Method of Operating such Apparatus
Apparatus comprising at least one reflective surface configured to reflect electromagnetic waves, wherein a reflective response of at least one portion of said reflective surface with respect to said electromagnetic waves is electronically controllable, wherein said apparatus is configured to at least temporarily control said reflective response of said at least one portion of said reflective surface.
REPEATER
A repeater includes a first surface-side antenna, a second surface-side antenna, and a transceiver. Each of the first surface-side antenna and the second surface-side antenna includes a first conductor and a second conductor opposed to each other in a first axis, one or more third conductors positioned between the first conductor and the second conductor and extending in the first axis, a fourth conductor connected to the first conductor and the second conductor and extending in the first axis, and a feeding line electromagnetically connected to any one of the third conductors. The first conductor and the second conductor are capacitively connected through the third conductor. The feeding line of the first surface-side antenna is connected to the feeding line of the second surface-side antenna through the transceiver.
ANTENNA, WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, VEHICLE, MOTORCYCLE, AND MOVABLE BODY
A wireless communication system includes a first wireless communication device installed on an installation surface of a vehicle and a second wireless communication device. The first wireless communication device includes an antenna and a sensor. The antenna includes a first conductor, a second conductor, one or more third conductors, a fourth conductor, and a feeding line. The first wireless communication device transmits a signal from the antenna to the second wireless communication device, based on information detected by the sensor.
Compact Cavity-Backed Discone Array
A compact shallow cavity-backed discone antenna array for conformal omnidirectional antenna applications is disclosed. The antenna array comprises a plurality of discone antennas arranged in a ring array within a circular contoured conical cavity. The cavity is covered with an electrically transparent radome. The individual discone antenna elements are fed with coaxial transmission lines. Good performance is demonstrated by simulation and by experiment in terms of reflection coefficient and omnidirectional gain radiation patterns from about 960 MHz to 1220 MHz. In one embodiment, the shallow cavity-backed discone antenna array may be used as a flush-mounted antenna that conforms to the outer mold line of an aircraft.
Twin-beam base station antennas having thinned arrays with triangular sub-arrays
Twin-beam base station antennas include first and second arrays that each have a plurality of radiating elements that are mounted to extend forwardly from respective first and second panels of an angled reflector. The radiating elements in each array extend in three columns, with the radiating elements in the middle column vertically offset from the radiating elements in the outer columns. The antennas further include first and second phase shifters. More than half of the outputs of the first phase shifter are connected to respective first sub-arrays, where each first sub-array includes one radiating element from each of the three columns in the first array, and more than half of the outputs of the second phase shifter are connected to respective second sub-arrays, where each second sub-array includes one radiating element from each of the three columns in the second array.
Arrays with foldable and deployable characteristics
Antenna devices are provided, including tightly coupled arrays, transmitarrays, and reflectarrays. An antenna device can include a plurality of substrates each having an antenna element. The substrates can be provided in connected series or in an array. The substrates can be part of an origami array such that the entire array is foldable. The substrates can optionally be attached to a framework that can actuate the substrates to different configurations. By bending, folding, or otherwise repositioning the substrates/array, the electromagnetic characteristics of the antenna device can be easily reconfigured for the desired task.
MULTI-BEAM BASE STATION ANTENNAS HAVING WIDEBAND RADIATING ELEMENTS
A twin beam base station antenna includes a first array that has a plurality of columns of first frequency band radiating elements, the first array configured to form a first antenna beam that provides coverage throughout a first sub-sector of a three-sector base station. The radiating elements in a first of the columns in the first array have a first azimuth boresight pointing direction and the radiating elements in a second of the columns in the first array have a second azimuth boresight pointing direction that is offset from the first azimuth boresight pointing direction by at least 10. The radiating elements in the second of the columns in the first array are electrically steered.