A switchable antenna includes a substrate, a first antenna element, a second antenna element, a first switch element, a second switch element, a first radiating portion on an upper surface of the substrate including a first center, a first bend section and a second bend section, and a second radiating portion on an lower surface of the substrate including a second center, a third bend section and a fourth bend section. The third and the fourth bend sections extending from the second center are respectively disposed corresponding to the first and the second bend sections extending from the first center. The first and the second antenna elements on the upper surface are disposed corresponding to the first and the second bend sections. The first and the second switch elements are respectively configured to switch the first and the second antenna elements between a reflector and a parasitic radiating element.

A ground station antenna including a torus shaped reflector having multiple feed points along a focal arc in front of the reflector. The ground station antenna includes transceiver feeds having their electrical phase centers located on the focal arc and supported by a rotating feed platform. The transceiver feeds are configured to simultaneously track rising and falling satellites when the platform rotates. The ground station antenna further includes a wireless power receiver coupled to the transceiver feeds to power the transceiver feeds. The ground station antenna further includes a wireless signal interface coupled to the transceiver feeds to communicate signals with a base unit to perform subsequent processing.

A ground station antenna including a torus shaped reflector having multiple feed points along a focal arc in front of the reflector. The ground station antenna includes transceiver feeds having their electrical phase centers located on the focal arc and supported by a rotating feed platform. The transceiver feeds are configured to simultaneously track rising and falling satellites when the platform rotates. The ground station antenna further includes a wireless power receiver coupled to the transceiver feeds to power the transceiver feeds. The ground station antenna further includes a wireless signal interface coupled to the transceiver feeds to communicate signals with a base unit to perform subsequent processing.

A device and method are described for duplex satellite communication over a single satellite antenna. A satellite ground terminal may utilize a frequency-selective surface module including a frequency-selective surface as a subreflector acting as a frequency diplexer to separate signals received and/or transmitted by a first feed and a second feed of a satellite ground terminal, where each feed has a separate antenna horn. The frequency-selective surface module may be used in combination with a second subreflector such that a first feed and a second feed of the satellite ground terminal are implemented on the same side of the frequency-selective surface module.

Subreflectors for frequency-reuse types of satellite communication system which cover the S and C bands take the form of a three-dimensional waveguide with cross dipoles on each end, where each branch of each dipole is electrically connected by conductor that passes through the center of a substrate that fills the volume of the waveguide. The frequency selective surface sub-reflector is configured to permit the S-band antenna to transmit therethrough with an insertion loss of less than 0.5 decibels, and to reflect transmissions of the C-band antenna with transmissions through the frequency selective surface sub-reflector being less than 15 decibels.

Subreflectors for frequency-reuse types of satellite communication system which cover the S and C bands take the form of a three-dimensional waveguide with cross dipoles on each end, where each branch of each dipole is electrically connected by conductor that passes through the center of a substrate that fills the volume of the waveguide. The frequency selective surface sub-reflector is configured to permit the S-band antenna to transmit therethrough with an insertion loss of less than 0.5 decibels, and to reflect transmissions of the C-band antenna with transmissions through the frequency selective surface sub-reflector being less than 15 decibels.

A multi-beam telecommunications antenna system with a focusing device including a two-dimensional radiator array generating a plurality of beams simultaneously by setting amplitude-time parameters of the signals for each radiator. The antenna includes: a focusing system having an amplifying lens; a radiating device, for irradiating the amplifying lens and having a two-dimensional radiator array, is disposed at a distance from the amplifying lens and covers a projection area of beams at this distance; and a beam forming system. At least one sub-array of the radiators provides a beam in a set direction. For each beam, the beam forming system provides, for each radiator in the corresponding sub-array, amplitude-time parameters of the signal being transmitted to form a non-planar wavefront, which is equidistant across the amplifying lens to a planar wavefront of the beam. The radiating surface of the radiator array is outside a region of self-intersection of the non-planar wavefronts.

A multi-beam telecommunications antenna system with a focusing device including a two-dimensional radiator array generating a plurality of beams simultaneously by setting amplitude-time parameters of the signals for each radiator. The antenna includes: a focusing system having an amplifying lens; a radiating device, for irradiating the amplifying lens and having a two-dimensional radiator array, is disposed at a distance from the amplifying lens and covers a projection area of beams at this distance; and a beam forming system. At least one sub-array of the radiators provides a beam in a set direction. For each beam, the beam forming system provides, for each radiator in the corresponding sub-array, amplitude-time parameters of the signal being transmitted to form a non-planar wavefront, which is equidistant across the amplifying lens to a planar wavefront of the beam. The radiating surface of the radiator array is outside a region of self-intersection of the non-planar wavefronts.

A rotatable antenna can include a wireless rotatable interconnect having a stator coil pad coupled to a power supply port for receiving power and to a data port for communication of data and a rotor coil pad that is in bi-directional communication with the stator coil pad. The rotor coil pad superposes the stator coil pad and the rotor coil pad is spaced apart from the rotor coil pad, and the rotor coil pad is rotatable about an axis. A radiating element is coupled to the rotor coil pad, and changes in a rotation of the rotor coil pad about the axis to change a pointing direction of the radiating element. A plurality of wireless channels are established between the stator coil pad and the rotor coil pad and a first channel of the plurality of wireless channels transfers power from the stator coil pad to the rotor coil pad.

A rotatable antenna can include a wireless rotatable interconnect having a stator coil pad coupled to a power supply port for receiving power and to a data port for communication of data and a rotor coil pad that is in bi-directional communication with the stator coil pad. The rotor coil pad superposes the stator coil pad and the rotor coil pad is spaced apart from the rotor coil pad, and the rotor coil pad is rotatable about an axis. A radiating element is coupled to the rotor coil pad, and changes in a rotation of the rotor coil pad about the axis to change a pointing direction of the radiating element. A plurality of wireless channels are established between the stator coil pad and the rotor coil pad and a first channel of the plurality of wireless channels transfers power from the stator coil pad to the rotor coil pad.