Massively multi-user MIMO using space time holography
First Claim
1. An antenna system, comprising:
- one or more feeds configured to receive an electromagnetic (EM) signal and propagate the EM signal as an EM reference wave;
a plurality of tunable EM scattering elements spaced at sub-wavelength distances compared to the EM reference wave, the plurality of tunable EM scattering elements configured to operate in at least two different operational states to selectively scatter the EM reference wave as a radiated wave; and
a wireless controller configured to wirelessly control the plurality of tunable EM scattering elements and modulate the radiated wave over time to deliver a plurality of different information streams to a plurality of different far-end locations by modulating the plurality of tunable EM scattering elements between the plurality of different operational states over time;
a plurality of EM filters corresponding to the plurality of tunable EM scattering elements, wherein;
the wireless controller includes an EM emitter configured to emit EM radiation encompassing a wide frequency range;
each of the plurality of EM filters is configured to pass only a portion of the EM radiation encompassing the wide frequency range;
the plurality of tunable EM scattering elements is configured to switch between the at least two different operational states responsive to receiving the portion of the EM radiation passed by the corresponding ones of the plurality of EM filters; and
the wireless controller is configured to vary frequency content of the EM radiation to control the plurality of tunable EM scattering elements to deliver the plurality of different information streams to the plurality of different far-end locations.
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Accused Products
Abstract
Disclosed are antenna systems, wireless antenna controllers, and related methods. An antenna system includes a configured to receive an electromagnetic (EM) signal and propagate the EM signal as an EM reference wave. The antenna system also includes a tunable EM scattering elements, and a wireless controller. A wireless antenna controller includes an EM emitter configured to emit EM radiation to EM filters. The EM filters are configured to pass different sub-ranges of a frequency range of the EM radiation to the tunable EM scattering elements. A method includes wirelessly controlling the tunable EM scattering elements to deliver a different information streams to different far-end locations. A method includes controlling the EM emitter to modulate frequency content of the EM radiation to cause the tunable EM scattering elements to operate collectively according to different modulation patterns.
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Citations
37 Claims
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1. An antenna system, comprising:
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one or more feeds configured to receive an electromagnetic (EM) signal and propagate the EM signal as an EM reference wave; a plurality of tunable EM scattering elements spaced at sub-wavelength distances compared to the EM reference wave, the plurality of tunable EM scattering elements configured to operate in at least two different operational states to selectively scatter the EM reference wave as a radiated wave; and a wireless controller configured to wirelessly control the plurality of tunable EM scattering elements and modulate the radiated wave over time to deliver a plurality of different information streams to a plurality of different far-end locations by modulating the plurality of tunable EM scattering elements between the plurality of different operational states over time; a plurality of EM filters corresponding to the plurality of tunable EM scattering elements, wherein; the wireless controller includes an EM emitter configured to emit EM radiation encompassing a wide frequency range; each of the plurality of EM filters is configured to pass only a portion of the EM radiation encompassing the wide frequency range; the plurality of tunable EM scattering elements is configured to switch between the at least two different operational states responsive to receiving the portion of the EM radiation passed by the corresponding ones of the plurality of EM filters; and the wireless controller is configured to vary frequency content of the EM radiation to control the plurality of tunable EM scattering elements to deliver the plurality of different information streams to the plurality of different far-end locations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wireless antenna controller, comprising:
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an electromagnetic (EM) emitter configured to controllably emit EM radiation of a frequency range to a plurality of tunable EM scattering elements through a plurality of EM filters configured to pass different sub-ranges of the frequency range to different ones of the plurality of tunable EM scattering elements, the plurality of tunable EM scattering elements configured to operate in a plurality of different scattering states responsive to the sub-ranges of the frequency range; and control circuitry operably coupled to the EM emitter, the control circuitry comprising at least one data storage device including computer-readable instructions stored thereon and at least one processor operably coupled to the at least one data storage device and configured to execute the computer-readable instructions, wherein the computer-readable instructions are configured to instruct the at least one processor to control the EM emitter to modulate frequency content of the EM radiation to cause the plurality of tunable EM scattering elements to operate collectively according to a plurality of different modulation patterns. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method of operating an antenna system, the method comprising:
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applying an electromagnetic (EM) signal to one or more feeds configured to receive and propagate the EM signal as an EM reference wave; scattering the EM reference wave as a radiated wave with a plurality of tunable EM scattering elements spaced at sub-wavelength distances compared to the EM reference wave, the plurality of tunable EM scattering elements configured to operate in at least two different operational states; and wirelessly controlling the plurality of tunable EM scattering elements with a wireless controller to modulate the radiated wave over time to deliver a plurality of different information streams to a plurality of different far-end locations by modulating the plurality of tunable EM scattering elements between the plurality of different operational states over time; wherein wirelessly controlling the plurality of tunable EM scattering elements comprises; emitting EM radiation encompassing a wide frequency range with an EM emitter of the wireless controller; passing only a portion of the EM radiation encompassing the wide frequency range with each of a plurality of EM filters corresponding to the plurality of tunable EM scattering elements; switching the plurality of tunable EM scattering elements between the at least two different operational states responsive to receiving the portion of the EM radiation passed by the corresponding ones of the plurality of EM filters; and varying frequency content of the EM radiation to control the plurality of tunable EM scattering elements to deliver the plurality of different information streams to the plurality of different far-end locations. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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Specification