Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

A control node for an array antenna configured so as to apply an attenuation and a phase shift to a radiofrequency signal on the basis of a control signal, to a beamforming network, to an array antenna and to a satellite includes the control node. It comprises a quadratic divider that delivers an in-phase signal and a quadrature signal on separate transmission channels, a combiner configured so as to sum the signals transmitted on two of the transmission channels, each transmission channel comprising at least: one attenuation cell activated on the basis of the value of a dedicated bit of the control signal, and one phase shift cell configured so as to apply a fixed phase shift, activated on the basis of the result of combinational logic implemented on bits of the control signal.

Methods, systems, and devices for wireless communication are described. An access point (AP) may switch antenna array configurations during reception of a packet to determine channel characteristic information for the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration. In some cases, the AP may use multiple antenna array configurations to transmit training fields in the preamble of a packet. The AP may receive channel characteristic information for each of the antenna array configurations. The AP may use the channel characteristic information to select an antenna array configuration for use, and to determine a beamforming steering matrix for the selected antenna array configuration.

A beam weight obtaining method and an apparatus. An aggregation path is generated by using energy of a plurality of paths to help improve quality of a generated beam, thereby improving an SNR and a capacity of a terminal device. The method includes: a network device obtains a plurality of paths that meet a multipath aggregation condition, where the multipath aggregation condition includes one or more of the following conditions: a condition that every two paths in the plurality of paths need to meet in space, and a condition that every two paths in the plurality of paths need to meet in power. The network device determines aggregation information based on the plurality of paths, where the aggregation information includes information required by the network device to generate an aggregation path corresponding to the plurality of paths.

In one implementation, a wireless communications terminal includes a multi-element antenna. In addition, the terminal includes preliminary signal combiners to combine received signals output by corresponding pairs of antenna elements. For each preliminary signal combiner, the signal output by a first of the pair of elements provides a model of interference present in the received signal output by the second of the pair of elements. The preliminary signal combiner is configured to combine the signal output by the first element with the signal output by the second element to produce an initial interference-mitigated signal. The terminal also includes phase shifters to apply complex weights to interference-mitigated signals to produce complex-weighted versions of the interference-mitigated signals and effectively steer a main beam of the antenna to facilitate reception of a desired signal and another signal combiner to combine the complex-weighted versions of the interference-mitigated signals to produce an interference-mitigated output signal.

Aspects are provided which allow a UE to manage a number of antennas in adaptive receive diversity (ARD) based on packet error rate (PER). The UE measures a downlink PER and determines a number of antennas for receiving a downlink transmission based on the measured, downlink PER. The UE measures downlink PER during switching from a fallback state to a steady state in an ARD state machine, and the UE changes a size of a fallback window in the ARD state machine based on the measured, downlink PER. The UE also disables switching from the steady state to the fallback state based on the measured downlink PER. As a result, a balance between UE reception performance and power savings is maximized and improved downlink data throughput is achieved.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

A multi-band software defined antenna array tile including a set of pairs of frequency converters associated with a respective coupled dipole array antenna element and comprising a principal polarization converter for applying an oscillating signal to a first partial beam-formed data stream to generate an oscillating partial beam-formed data stream, where the oscillating signal is associated with an oscillating signal frequency received from a memory operatively connected to a system controller. The principal polarization converter applies a three-stage halfband filter to the first oscillating partial beam-formed data stream to generate a filtered partial beam-formed data stream, applies time delay to the filtered partial beam-formed data stream to generate a first partial beam and transmits a partial beam along with other partial beams to a digital software system interface through a data transport bus.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.