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US 2017/0012732 A1Published application
Methods and apparatus for orbital angular momentum (oam) system
AssigneeRaytheon Company
InventorsAndrew Kowalevicz, Gary M. Graceffo
Life of this patent
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Abstract
Methods and apparatus for an OAM system having simultaneous OAM states. In embodiments, m data streams are encoded and split into n copies each of which is delayed to produce a distinct RF orbital angular momentum (OAM) mode. The delayed copies are combined using wave division multiplexing. The combined m data streams are transmitted using n antenna elements.
Claims20
A method, comprising:
- encoding m data streams;
- splitting each of the m data streams into n copies;
- delaying each of the n copies by a respective amount of time to produce a distinct RF orbital angular momentum (OAM) mode;
- combining the delayed copies of each of the m data streams using wave division multiplexing;
- and
- transmitting the combined m data streams using n antenna elements;
3 more elements
A system, comprising:
- modulators to encode m data streams;
- optical splitters to split each of the m data streams into n copies;
- delay modules for each of the m optical splitters to delay each of the n copies by a respective amount of time to produce n distinct RF orbital angular momentum (OAM) modes;
- WDM combiners to combine each of the distinct OAM mode signals;
- and
- antenna elements to transmit the distinct OAM mode signals.
3 more elements
A method, comprising:
- splitting m modulated data streams into n copies each of which is delayed a respective amount to form n distinct OAM RF mode signals;
- combining the OAM RF signals at respective combiners;
- and
- transmitting the distinct OAM RF signals into free space.
1 more element
Dependencies are inferred from the claim text.