Provided is an antenna for satellite communication capable of receiving multi-band signals. The antenna includes: a main reflector; a first feed horn which is provided on the main reflector and receives a signal of a first band; a first reflector which is disposed to be spaced apart from a reflective surface of the main reflector at a predetermined interval and transmits the signal of the first band to the first feed horn; a second feed horn which is provided on the main reflector and receives a signal of a second band; and a second reflector which is disposed to be spaced apart from the reflective surface of the main reflector at a predetermined interval and transmits the signal of the second band to the second feed horn.

A system, in a programmable active reflector (AR) device associated with a first radio frequency (RF) device and a second RF device, receives a request and associated metadata from the second RF device via a first antenna array. Based on the received request and associated metadata, one or more antenna control signals are received from the first RF device. The programmable AR device is dynamically selected and controlled by the first RF device based on a set of criteria. A controlled plurality of RF signals is transmitted, via a second antenna array, to the second RF device within a transmission range of the programmable AR device based on the associated metadata. The controlled plurality of RF signals are cancelled at the second RF device based on the associated metadata.

A system, in a programmable active reflector (AR) device associated with a first radio frequency (RF) device and a second RF device, receives a request and associated metadata from the second RF device via a first antenna array. Based on the received request and associated metadata, one or more antenna control signals are received from the first RF device. The programmable AR device is dynamically selected and controlled by the first RF device based on a set of criteria. A controlled plurality of RF signals is transmitted, via a second antenna array, to the second RF device within a transmission range of the programmable AR device based on the associated metadata. The controlled plurality of RF signals are cancelled at the second RF device based on the associated metadata.

A band changer includes a rotor having a rotation axis, and a plurality of transceivers disposed separately from the rotation axis and provided in the rotor along a circumferential direction of the rotor, and configured to transmit and receive waves respectively having different frequency bands.

A method for providing frequency selective surface zoning includes selecting a location for positioning a frequency selective surface (FSS) panel along a support arm of a reflector antenna system, and positioning a second feed horn on the support arm on an opposite side of the FSS panel. A number of unit cells are used to populate the FSS panel, and metallic patterns are formed on each unit cell. Multiple zones are subsequently defined on the surface of the FSS panel. Each zone is optimized for a predetermined range of incident angles.

Methods of antenna pointing and antenna assemblies implementing those methods are disclosed. An example method includes providing a user terminal antenna assembly including an antenna and an auto-peak device. The antenna includes a reflector, a subreflector, and a feed, the feed oriented relative to the reflector and the subreflector to produce a beam. The antenna further includes a tilt assembly to tilt the subreflector relative to the reflector and the feed. The method further includes providing a control signal to tilt the subreflector in a plurality of tilt positions to move the beam while measuring corresponding signal strength of a signal communicated via the antenna at each of the plurality of tilt positions. Additionally, the method includes selecting a tilt position from the plurality of tilt positions based on a measured signal strength, and providing the control signal to tilt the subreflector to the selected tilt position.

The present invention discloses an antenna for satellite communication having a structure for switching multiband signals. The antenna for satellite communication according to an embodiment of the present invention includes a main reflecting plate configured to be rotatable in a predetermined direction so as to be oriented in a direction in which a satellite is located, a first feed horn configured to be detachably installed in a region of an edge of the main reflecting plate, a sub-reflecting plate configured to be installed so as to be spaced apart from a reflecting surface of the main reflecting plate by a predetermined distance by at least one support means provided in a region of the main reflecting plate, and a second feed horn configured to be detachably installed on a side opposite to the reflecting surface of the sub-reflecting plate, wherein an installation position of the sub-reflecting plate is changeable.

A plurality of primary radiators (1) is classified by combinations of frequency and polarization of radiated radio waves, a plurality of primary radiators (1) belonging to the same class is arranged at positions corresponding to vertexes of one of triangles in a repeated triangle pattern TR.sub.Pattern, and the shape of a main reflector (2) and the shape and arrangement of the repeated triangle pattern TR.sub.Pattern are determined such that a direction of a line segment passing through positions corresponding to two vertexes in the triangle is different from a radiation direction of a sidelobe of a radio wave reflected by a main reflector (2) after having been radiated from a primary radiator (1) arranged at a position corresponding to the vertexes.

This antenna includes a first part, a second part rotatably mounted about a first axis, and a rotary joint arranged between the first and second parts, the second part including a radiating source and a reflection assembly having a reflector defining a reflector top, a focus, and a second axis passing through the reflector top and the focus, the rotary joint being able to transmit electromagnetic signals between the first and second parts via at least one transmission channel, and the first and second parts being so arranged that in any position of the second part and the reflection unit, the first axis is perpendicular to the second axis.

Provided is an antenna for satellite communication capable of receiving multi-band signals. The antenna includes: a main reflector; a first feed horn which is provided on the main reflector and receives a signal of a first band; a first reflector which is disposed to be spaced apart from a reflective surface of the main reflector at a predetermined interval and transmits the signal of the first band to the first feed horn; a second feed horn which is provided on the main reflector and receives a signal of a second band; and a second reflector which is disposed to be spaced apart from the reflective surface of the main reflector at a predetermined interval and transmits the signal of the second band to the second feed horn.