3×3 Butler matrix and 5×6 Butler matrix
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United States of America Patent
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Apr 10, 2018
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app pub date -
Jul 12, 2013
filing date -
Jul 12, 2013
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Abstract
The present invention relates to a 3×3 Butler matrix, comprising a first directional coupler, a second directional coupler, a third directional coupler, a first fixed phase shifter, a second fixed phase shifter and a third fixed phase shifter; and also relates to a 5×6 Butler matrix, comprising a first 3×3 Butler matrix, a second 3×3 Butler matrix, a fourth directional coupler, a fifth directional coupler, a power divider, a fourth fixed phase shifter and a fifth fixed phase shifter. The 3×3 Butler matrix and the 5×6 Butler matrix provided in the present invention have the features of small size, wide frequency band, low loss, high isolation and stable performance, fill the blank of specific technical schemes about the 3×3 Butler matrix and the 5×6 Butler matrix in the prior art, and have broad application prospects and great value.
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