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EFH WIRELESS COMMUNICATION RECEIVER USING BEAMFORMING WITH SCALABLE NUMBER OF ANTENNA PATHS
EFH WIRELESS COMMUNICATION RECEIVER USING BEAMFORMING WITH SCALABLE NUMBER OF ANTENNA PATHS
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机译：使用具有可伸缩天线路径数量的波束成形的无线通信接收器
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摘要
The invention relates to a EHF wireless communication receiver comprising a phased array radio arranged for receiving a beam of signals in a predetermined frequency band. The phased array radio comprises a plurality of antenna paths, each arranged for handling one of the incoming signals and forming a differential I/Q output signal, each antenna path comprises a downconversion part and a phase shifting part for applying a controllable phase shift; a signal combination circuitry is connected to the antenna paths and is arranged for combining the differential I/Q output signals; and a control circuitry is connected to the phase shifting parts of the antenna paths and is arranged for controlling the controllable phase shift. In each antenna path, the phase shifting part is a baseband part downstream from the downconversion part and the phase shifting part comprises a set of variable gain amplifiers arranged for applying controllable gains to the respective downconverted incoming signals in the I/Q branches. The control circuitry sets the controllable gains of the variable gain amplifiers to coefficients of a rotational matrix.
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