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, the plurality of tunable EM scattering elements configured to operate in at least two different operational states of a plurality of different operational states to selectively scatter the EM reference wave as a radiated wave; and
control circuitry comprising a controller operably coupled to the plurality of tunable EM scattering elements through a plurality of high frequency EM transmission lines, the controller programmed to modulate the plurality of tunable EM scattering elements between the plurality of different operational states over time through a plurality of isolated and decoupled control lines to modulate the radiated wave over time for delivering a plurality of different information streams to a plurality of different far-end locations, wherein the plurality of high frequency EM transmission lines are configured to transmit EM waves having a frequency of at least about twice a frequency of the reference wave.
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Accused Products
Abstract
Disclosed are antenna systems and related methods. An antenna system includes one or more feeds configured to receive an electromagnetic (EM) signal and propagate the EM signal as an EM reference wave. The antenna system also includes a plurality of tunable EM scattering elements spaced at sub-wavelength distances, and a controller operably coupled to the plurality of tunable EM scattering elements. A method includes operating the plurality of tunable EM scattering elements in at least two different operational states to selectively scatter the EM reference wave as a radiated wave, and modulating 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.
37 Citations
36 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, the plurality of tunable EM scattering elements configured to operate in at least two different operational states of a plurality of different operational states to selectively scatter the EM reference wave as a radiated wave; and control circuitry comprising a controller operably coupled to the plurality of tunable EM scattering elements through a plurality of high frequency EM transmission lines, the controller programmed to modulate the plurality of tunable EM scattering elements between the plurality of different operational states over time through a plurality of isolated and decoupled control lines to modulate the radiated wave over time for delivering a plurality of different information streams to a plurality of different far-end locations, wherein the plurality of high frequency EM transmission lines are configured to transmit EM waves having a frequency of at least about twice a frequency of the reference wave. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating an antenna system, the method comprising:
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receiving and propagating an electromagnetic (EM) signal as an EM reference wave; operating a plurality of tunable EM scattering elements spaced at sub-wavelength distances in at least two different operational states of a plurality of different operational states to selectively scatter the EM reference wave as a radiated wave; and modulating the plurality of tunable EM scattering elements between the plurality of different operational states over time through a plurality of isolated and decoupled control lines to modulate the radiated wave over time to deliver a plurality of different information streams to a plurality of different far-end locations, wherein the plurality of tunable EM scattering elements are controlled using a plurality of high frequency EM transmission lines configured to transmit EM waves having a frequency of at least about twice a frequency of the reference wave. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification