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Optical and Quantum Electronics

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01-12-2023

Photonic integrated cmos-compatible true time delay based broadband beamformer

Authors: Shayna Kumari, Shanthi Prince

Published in: Optical and Quantum Electronics | Issue 13/2023

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Abstract

The evolution to 5G millimeter wave (mmWave) is opening doors to many novel applications and services by leveraging the higher carrier frequency of 24 GHz and beyond. 5G mmWave promises to deliver extreme bandwidth, ultra-low latency, faster data speeds and responsiveness – thereby facilitating broadband connectivity to densely populated areas. Nevertheless, millimeter waves suffer from significant path loss, imposing severe range constraints. Beamforming is a promising technique to alleviate this impediment. Integrated photonics is sophisticated technology to realize cost-effective, compact, and power-efficient beamformers. In this paper, we propose photonically controlled continuously tunable single side coupled racetrack resonator based 1 × 8 broadband beamformer on CMOS-compatible silicon-on-insulator platform. A beam steering angle of 31.001˚ is achieved for 28 GHz mmWave wave signal. The proposed beamformer can provide maximum continuously tunable true time delay of 125 ps for delay bandwidth of 32.46 GHz. Therefore, the beam scanning range of 0–90° can be attained by properly tuning the coupling coefficient and resonance frequency of the racetrack resonator based delay element.

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Title: Photonic integrated cmos-compatible true time delay based broadband beamformer
Authors: Shayna Kumari
Shanthi Prince
Publication date: 01-12-2023
Publisher: Springer US
Published in: Optical and Quantum Electronics / Issue 13/2023
Print ISSN: 0306-8919
Electronic ISSN: 1572-817X
DOI: https://doi.org/10.1007/s11082-023-05492-3

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