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US 2014/0349598 A1Published application
Signal Carrier Modulation Using a Polarization Switchable Antenna
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsLeonard De La Cruz, Saad Tabet
Life of this patent
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Abstract
A system for modulating a communications signal using a switchable antenna. By using a polarization switchable antenna, modulation of a signal and/or carrier can be achieved by switching the polarization of antenna. Since the change of polarization is achieved by separate circuitry, the signal or message can be modulated by other methods and be modulated again by antenna.
Claims16
A system for modulating a communications signal, comprising:
- a communications signal transmitter;
- and
- a polarization switchable antenna to receive and modulate the communications signal, wherein the communications signal is modulated by switching the polarization of the polarization switchable antenna.
A system for transmitting a signal, comprising:
- a signal transmitter;
- a polarization switchable patch antenna for receiving and modulating the signal;
- and
- a polarization detector for receiving and demodulating the modulated signal.
1 more element
A method for modulating a communications signal comprising:
- receiving the communications signal with dual band circularly polarized patch antenna patch antenna with upper and lower antenna elements separated by electronic switching elements;
- switching the polarization of the signal with the dual band circularly polarized patch antenna;
- and
- transmitting the polarization switched signal.
1 more element
Dependencies are inferred from the claim text.