Abstract: Phase or amplitude compensation for beam-former Apparatus for an antenna with a plurality of antenna elements, the antenna providing a radiation pattern including one or more beams and the apparatus comprising: a digital beam-former for digitally weighting component signals corresponding to the one or more beams with respective beam-forming weights to provide each component signals of a beam with a phase relationship and amplitude relationship to other component signals of the same beam; and a processing arrangement for processing signal for the beam-former or for processing signals received from the beam-former; the apparatus further comprising compensation means for compensating for at least one out of phase and amplitude distortions between component signals associated with the same frequency channel and related to the same beam arising in the processing arrangement.

Abstract: Phase or amplitude compensation for beam-former Apparatus for an antenna with a plurality of antenna elements, the antenna providing a radiation pattern including one or more beams and the apparatus comprising: a digital beam-former for digitally weighting component signals corresponding to the one or more beams with respective beam-forming weights to provide each component signals of a beam with a phase relationship and amplitude relationship to other component signals of the same beam; and a processing arrangement for processing signal for the beam-former or for processing signals received from the beam-former; the apparatus further comprising compensation means for compensating for at least one out of phase and amplitude distortions between component signals associated with the same frequency channel and related to the same beam arising in the processing arrangement.

Abstract: A satellite communication system includes at least one base station, at least one satellite that can be brought into communication connection with the base station for data transmission, and a plurality of receivers adapted to receive signals transmitted from the satellite. The communication system is designed to transmit data in at least one uplink data stream from the base station to the satellite with a first data transmission rate and to transmit data in at least one downlink data stream from the satellite to the receivers with a second data transmission rate. The first data transmission rate is lower than the second data transmission rate and the satellite is provided with a data storage adapted to store the data transmitted from the base station to the satellite and to supply the data provided for the transmission to the receivers.

Abstract: A satellite communication system includes at least one base station, at least one satellite that can be brought into communication connection with the base station for data transmission, and a plurality of receivers adapted to receive signals transmitted from the satellite. The communication system is designed to transmit data in at least one uplink data stream from the base station to the satellite with a first data transmission rate and to transmit data in at least one downlink data stream from the satellite to the receivers with a second data transmission rate. The first data transmission rate is lower than the second data transmission rate and the satellite is provided with a data storage adapted to store the data transmitted from the base station to the satellite and to supply the data provided for the transmission to the receivers.