A multi-beam antenna including a reflector having a single reflector surface defining a first focal region and a second focal region. A first feed group located within the first focal region includes a first feed oriented relative to the reflector to define a first beam pointed in a first direction. The multi-beam antenna further includes a fixed attachment mechanism attaching the first feed group to the reflector such that a position of the first feed group is fixed relative to the reflector. The multi-beam antenna further includes a second feed group located within the second focal region that includes a second feed oriented relative to the reflector to define a second beam pointed in a second direction. The multi-beam antenna further includes an adjustable attachment mechanism attaching the second feed group to the reflector, whereby a difference between the first direction and the second direction is adjustable.

An antenna device includes a main reflector (11), a sub-reflector (12) including sub-reflector panels and having a reflecting surface facing a reflecting surface of the main reflector, and a primary emitter (13) to receive a radio wave reflected by the sub-reflector (12). Each of sub-reflector panel drive mechanisms coupled to the sub-reflector panels is finely driven. A phase calculator (171) calculates a relative phase of an element electric-field vector corresponding to each of the sub-reflector panels based on a change in received electric-field strength of the radio wave received by the primary emitter (13) during driving of the sub-reflector panel drive mechanisms, and determines positions of the sub-reflector panels at which a phase distribution on an aperture surface of the main reflector (11) is minimized.

A spatially diverse antenna array may be used to reduce or eliminate multipath errors in ranging measurements for a mobile device. The spatial diversity in the antenna structure enables different locations of the antenna to experience different signal characteristics from which multipath signals may be identified. The measured relative reception time for each antenna in the array may be determined. The expected relative reception time for each antenna in the antenna array is determined based on an estimated location and orientation of the antenna array. The expected and measured relative reception times are fit to align the expected and measured relative reception times for one antenna such that for all other antennas the measured relative reception time is aligned or greater than the expected relative reception times. The range between the mobile device and the transmitter may be based on the fit of the expected and measured relative reception times.

A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

A Cassegrain-type metamaterial antenna, includes: a metamaterial main reflector having a central through-hole, a feed source disposed in the central through-hole, and a sub-reflector disposed in front of the feed source, where an electromagnetic wave radiated by the feed source is emerged in a form of a plane wave after being reflected by the sub-reflector and the metamaterial main reflector in sequence; the metamaterial main reflector includes: a first core layer and a first reflection layer disposed on a rear surface of the first core layer, where the first core layer includes at least one first core layer lamella, and the first core layer lamella includes: a first base material and multiple first conductive geometric structures disposed on the first base material; and a far focus of the sub-reflector coincides with a phase center of the feed source. A paraboloid is replaced with a lamellar metamaterial main reflector.

The invention is an integrated single-piece antenna feed, turnstile polarizer and antenna system suitable for satellite communications. One embodiment of the integrated single-piece antenna includes a circular waveguide input, a circular polarizer, a coaxial feed horn, subreflector and subreflector support. One embodiment of the circular polarizer features four branches of wrapped-single-ridged waveguide.

Finding and recognizing geostationary satellite orbital slots includes acquiring a location estimate for a satellite broadcast receiving antenna. A set of satellite look angles is captured in the antenna's reference frame coordinate space. A pattern of expected look angles is generated from the antenna location estimate. A pattern matching algorithm is executed to determine azimuth axis rotation to transform antenna reference frame into world reference frame. The validity of the reference frame transform is then checked for correctness by looking for a satellite position outside the set of satellite positions used for the pattern matching.

One embodiment of the present invention provides a radio assembly. The radio assembly includes an antenna housing unit that houses a pair of reflectors which are situated on a front side of the antenna housing unit, a printed circuit board (PCB) that includes at least a transmitter and a receiver, and a backside cover. The PCB is situated within a cavity at a backside of the antenna housing unit and the backside cover covers the cavity, thereby enclosing the PCB within the antenna housing unit. One embodiment of the present invention provides a user interface for configuring a radio. The user interface includes a display and a number of selectable tabs presented on the display. A selection of a respective tab results in a number of user-editable fields being displayed, thereby facilitating a user in configuring and monitoring operations of the radio.

An antenna system and a processing method are provided. The antenna system includes a focus device and a multi-band feeding antenna array that is disposed in a focus area of the focus device, where the multi-band feeding antenna array includes antenna arrays on at least two frequency bands, the antenna arrays on the at least two frequency bands include at least an antenna array on a first target frequency band, the antenna array on the first target frequency band includes multiple feeding units that are arranged in a form of a non-one-dimensional linear array; the multi-band feeding antenna array is configured to radiate a first beam, where the first beam points to the focus device, and sub-beams separately generated by the antenna arrays on the at least two frequency bands constitute the first beam.

An antenna device includes a main reflector (11), a sub-reflector (12) including sub-reflector panels and having a reflecting surface facing a reflecting surface of the main reflector, and a primary emitter (13) to receive a radio wave reflected by the sub-reflector (12). Each of sub-reflector panel drive mechanisms coupled to the sub-reflector panels is finely driven. A phase calculator (171) calculates a relative phase of an element electric-field vector corresponding to each of the sub-reflector panels based on a change in received electric-field strength of the radio wave received by the primary emitter (13) during driving of the sub-reflector panel drive mechanisms, and determines positions of the sub-reflector panels at which a phase distribution on an aperture surface of the main reflector (11) is minimized.