US 11,990,685 B2
Computer controlled electromechanical MMW frequency antenna scanning system and beam steering thereof
Tapas Chakravarty, Kolkata (IN); Aman Kumar, Kolkata (IN); Arpan Pal, Kolkata (IN); Achanna Anil Kumar, Bangalore (IN); Roshan Khobragade, Hyderabad (IN); Poornima Surojia, Hyderabad (IN); Pranay Sahay, Hyderabad (IN); and Manish Jain, Bangalore (IN)
Assigned to Tata Consultancy Services Limited, Mumbai (IN)
Filed by Tata Consultancy Services Limited, Mumbai (IN)
Filed on May 13, 2022, as Appl. No. 17/663,241.
Claims priority of application No. 202121023515 (IN), filed on May 27, 2021.
Prior Publication US 2023/0006346 A1, Jan. 5, 2023
Int. Cl. H01Q 3/08 (2006.01); H01Q 3/22 (2006.01); H01Q 9/04 (2006.01)
CPC H01Q 3/08 (2013.01) [H01Q 3/22 (2013.01); H01Q 9/0414 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A Millimeter Wave (MMW) frequency antenna scanning system comprising:
a microstrip antenna positioned horizontally in an XY plane of a Cartesian coordinate system and cooperating with a Radio Frequency (RF) chain to receive and transmit radio waves;
a first conducting plate positioned at a first predetermined distance from the microstrip antenna, wherein the first conducting plate is connected to a ground terminal and configured to reflect the radio waves;
a metasurface disposed such that a center point thereof is at a second predetermined distance, along a Z-axis in the Cartesian coordinate system, from a radiating face of the microstrip antenna;
two or more posts having a first end and a second end, positioned on opposite sides of the first conducting plate, wherein the first end is coupled to the metasurface, and configured to have vertical movement along the Z-axis; and
a controller unit in communication with the two or more posts via the second end thereof, wherein the controller unit comprises:
two or more motors, wherein each of the two or more motors are configured to independently control the vertical movement of an associated post from the two or more posts along the Z-axis, such that the vertical movement results in a tilt of the connected metasurface with reference to an orientation of the microstrip antenna; and
one or more data storage devices configured to store instructions;
one or more communication interfaces; and
one or more hardware processors operatively coupled to the one or more data storage devices via the one or more communication interfaces, wherein the one or more hardware processors are configured by the instructions to:
generate a driving voltage for synchronously controlling the two or more motors such that the coupled metasurface tilts with reference to the orientation of the microstrip antenna by an inclination angle for beam steering that provides a predetermined directivity to the microstrip antenna, wherein the beam steering involves steering of beams of the radio waves.