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  • Patent number: 10224641
    Abstract: Systems and methods for transmitting and receiving radio waves includes a parabolic dish, a focal plane antenna array configuration antenna elements arranged in a circular array configuration with array elements positioned along circumference of rings with a distance between each element and coupled a focal disc positioned along a focal plane of the parabolic dish. The array is configured to transmit and receive radio beam patterns with one or more Orbital Angular Momentum states ā€˜lā€™ via a transceiver feed assembly. The transceiver includes a transmitter adapted to alter excitation phase of the radio beams of successive elements and generate helical wave fronts in the far-field, and a receiver to enhance the received wave fronts. A total field received by the array configuration is then calculated by a superposition of the fields received by each of the elements.
    Type: Grant
    Filed: April 4, 2016
    Date of Patent: March 5, 2019
    Assignee: AMRITA VISHWA VIDYAPEETHAM
    Inventor: G. A. Shanmugha Sundaram