Distributed feeding circuit for antenna beamforming array
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United States of America Patent
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May 16, 2017
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N/A
app pub date -
Apr 25, 2014
filing date -
Apr 26, 2013
priority date (Note) -
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Abstract
A distributed feeding circuit for antenna beamforming array comprises a plurality N of inputs and a plurality N of outputs, wherein the said circuit is adapted for receiving, on at least one input, an electrical signal at a microwave frequency, modulated on at least one optical carrier, the circuit comprising at least one assembly of at least two optical dividers, two delay lines of length zero or substantially equal to a fraction of the wavelength of the signal at its microwave frequency and two means for combining two optical signals, the assembly being arranged and the delay lines being configured so that the theoretical transfer function of the circuit is an orthogonal matrix.
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