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COMPACT BUTLER MATRIX, PLANAR BIDIMENSIONAL BEAM FORMER AND FLAT ANTENNA COMPRISING SUCH A BUTLER MATRIX
COMPACT BUTLER MATRIX, PLANAR BIDIMENSIONAL BEAM FORMER AND FLAT ANTENNA COMPRISING SUCH A BUTLER MATRIX
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机译:紧凑型黄油枪矩阵,平面二维波束成形器和包括此类黄油枪矩阵的扁平天线
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摘要
A compact Butler matrix consists a planar multilayer structure comprising N parallel metal plate waveguides PPW, stacked one on top of the other, two adjacent waveguides PPW comprising a common wall consisting of one of the metal plates. The couplers, the phase-shifters and the crossover devices of the Butler matrix consist of metasurfaces incorporated in the metal plates. The planar two-dimensional beam-former can comprise a Butler matrix with waveguides PPW associated with optical lenses incorporated in each waveguide PPW. Alternatively, the planar two-dimensional beam-former can comprise an upper stage consisting of a Butler matrix with waveguides PPW, and a lower stage comprising waveguides PPW equipped with incorporated reflectors, the two stages being connected in series.
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