公开(公告)号：US11990685B2

公开(公告)日：2024-05-21

申请号：US17663241

申请日：2022-05-13

Applicant: Tata Consultancy Services Limited

Inventor： Tapas Chakravarty ,  Aman Kumar ,  Arpan Pal ,  Achanna Anil Kumar ,  Roshan Khobragade ,  Poornima Surojia ,  Pranay Sahay ,  Manish Jain

IPC: H01Q3/08 ,  H01Q3/22 ,  H01Q9/04

CPC classification number: H01Q3/08 ,  H01Q3/22 ,  H01Q9/0414

Abstract: This disclosure relates generally to Millimeter Wave (MMW) frequency antenna scanning system. Conventional approaches available for scanning an antenna beam over a large angular swath with high directivity are unable to address concerns of size and cost involved. The technical problem of providing an MMW frequency antenna scanning system using a single small size antenna capable of scanning as desired at a desired precision is addressed in the present disclosure. The antenna scanning system provided is an electromechanical system that makes the system cost effective. Computer control provides precision control in beam steering from remote. Use of a metasurface and configuration of a radiating patch and a shorting pin in a microstrip antenna addresses the concern with regards to the size of the antenna scanning system.

公开(公告)号：US20230291119A1

公开(公告)日：2023-09-14

申请号：US18112724

申请日：2023-02-22

Applicant: Tata Consultancy Services Limited

Inventor： Tapas CHAKRAVARTY ,  Aman Kumar ,  Arpan Pal

IPC: H01Q21/06 ,  H01Q15/00 ,  H01Q3/38

CPC classification number: H01Q21/065 ,  H01Q15/002 ,  H01Q3/38

Abstract: This disclosure relates generally to metasurface beam steering antenna and method of setting antenna beam angle. Conventional approaches perform electronically beam steering using phase array which requires bandwidth with higher data rates. The present disclosure enables metasurface antennas tilt antenna beam in a given direction, where the varactor diodes are operated in reverse bias so that different values of capacitors combination lead to electronic beam scanning. The processor of the metasurface beam steering antenna receives a command having an input angle to tilt the angle beam position. The processor processes the command by mapping the input angle with the set of c-shaped copper patch combination having the capacitor values using a predefined lookup table for setting the antenna beam angle based on a reference voltage generated by the varactor diode. The lookup table is iteratively updated with the capacitor values of the c-shaped copper patches.