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The mismatches of signal and array geometry will seriously degrade the performance of adaptive beamformer. In this paper, we propose two methods for robust adaptive beamforming based on the conjugate gradient (CG) algorithm. The proposed beamformers offer a significant improvement in the computational complexity while providing the same performance of the best robust beamformers at present. The first...
A miniaturized single-feed cross-aperture coupled right-handed circularly polarized (RHCP) microstrip antenna with bandwidth enhancement has been presented. The antenna size miniaturization is achieved by the capacitive loading offered by the shorting strips and radiating patch, and the inductive loading induced by the shorting pins. A 0°–90° microstrip hybrid consisting of a cascade of a Wilkinson...
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