Optimal Phase Angle Rounding-Off for Forming Closely Spaced Beams for On-board Active Phased Array System

Kumar, A. and Ghose, D. (2022) Optimal Phase Angle Rounding-Off for Forming Closely Spaced Beams for On-board Active Phased Array System. In: 2022 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2022, 12-16 December 2022, Bangalore, pp. 17-22.

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Abstract

Modern on-board active Phased Array Antenna System (PAAS) uses Digital Phase Shifters (DPS) to perform electronic scanning. The DPS has limitation of phase angle quantization, which when employed in PAAS lead to quantization of beam scanning steps. When closely spaced beam are needed for target tracking, the quantization of phase angles due to DPS leads to rounding-off of phase angles, which causes errors in beam pointing. This paper proposes an optimal Rounding-Off approach, to form closely spaced beams with low beam pointing errors. The paper formulates an optimization problem of minimizing the beam pointing errors, and obtain the rounding-off of the required phase angles to achieve this minimization objective. The proposed method has been integrated with primitive scanning trajectories for the performance evaluation. © 2022 IEEE.

Item Type:	Conference Paper
Publication:	2022 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Antenna phased arrays; Beam forming networks; Errors; Scanning antennas; Target tracking, Active phased array; Beam pointing errors; Digital phase shifter; Optimal rounding-off method; Phase angles; Phased array antenna systems; Phased array systems; Phased-arrays; Quantisation; Scan step, Beamforming
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	13 Apr 2023 10:14
Last Modified:	13 Apr 2023 10:14
URI:	https://eprints.iisc.ac.in/id/eprint/81233

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