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This paper proposes an array antenna calibration method for array antenna systems. The proposed method calibrates the amplitude and the phase of RF systems using internal coupler and switches without aids of external calibration systems. Computer simulation demonstrates that the proposed method corrects beamforming angles.
A compact modular 24 GHz imaging radar sensor for digital beamforming is presented. Besides digital beamforming on receive, the advantage of multiple switched transmitters is used for increasing the angular resolution, which requires less hardware effort. The presented FMCW radar sensor provides up to eight switchable transmitters and eight receiver channels for parallel receiving, allowing digital...
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