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Spherical Fourier-Transform-Based Real-TimeNear-Field Shaping and Focusing in Beyond-5G Networks.

Alessandro Felaco1, Kamil Yavuz Kapusuz1, Hendrik Rogier1

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This summary is machine-generated.

This study presents a novel method for controlling the electric near-field of antenna arrays for beyond fifth generation (B5G) and sixth generation (6G) wireless networks. The technique enables precise shaping of radio waves for improved communication performance and efficient power management.

Keywords:
array signal processingbeyond fifth-generation (B5G) wireless communicationholographic beamformingmultipole expansionnear-field focusing

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Area of Science:

  • Electromagnetics and Wireless Communication
  • Antenna Theory and Design

Background:

  • Beyond fifth generation (B5G) and sixth generation (6G) wireless networks require advanced beamforming for high-data-rate communication.
  • Mobile users in these networks are often in the radiative near-field of large antenna systems, necessitating precise near-field control.

Purpose of the Study:

  • To introduce a novel approach for shaping the electric near-field amplitude and phase of any general antenna array topology.
  • To demonstrate full control over radiation in all directions for optimized user performance and power density management.

Main Methods:

  • Leveraging active element patterns from each antenna port for beam synthesis.
  • Utilizing Fourier analysis and spherical mode expansions to exploit array capabilities.
  • Synthesizing two distinct arrays from a single active antenna element for proof-of-concept.

Main Results:

  • Achieved 2D near-field patterns with sharp edges and significant (30 dB) magnitude differences between target and non-target regions.
  • Demonstrated full control of radiation, optimizing performance in focal zones and managing power density outside.
  • Validated the algorithm's efficiency for fast, real-time modification and shaping of the radiative near-field.

Conclusions:

  • The presented method offers precise control over antenna array near-fields, crucial for future wireless networks.
  • The efficient algorithm facilitates real-time beam shaping, enhancing communication reliability and energy management.
  • This approach provides a powerful tool for optimizing near-field performance in B5G and 6G systems.