Photonic system and method for tunable beamforming of the electric field radiated by a phased array antenna
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United States of America Patent
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Feb 9, 2016
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Jul 4, 2013
app pub date -
Dec 9, 2010
filing date -
Jul 8, 2010
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Abstract
This invention discloses a photonic system to beamform the electric field yield by a phased array antenna. The system function relies on a photonic tunable delay line, which consists on an optical Mach-Zehnder interferometer with a predefined time delay difference between arms. The time delay is tuned by adjusting the coupling ratio between the power applied to each one of the interferometer's delay lines. Three embodiments are proposed, wherein one of them just uses a single delay line and a single monochromatic light source, independently of the quantity of the array elementary antennas.
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