A new antenna array architecture with hybrid beamforming for broadband satellite communications

Margaux Pellet, George Goussetis, Hervé Legay, João F. C. Mota, Bingen Cortazar, Giovanni Toso

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)
204 Downloads (Pure)

Abstract

In this paper, an antenna array architecture for broadband space communications with overlapped square subarrays is proposed. Analog and digital beamforming are performed consecutively at subarray level and across all subarrays. Subarrays are considered at digital beamforming level as large radiating elements, and thus the spacing between adjacent subarrays is not sufficient to prevent from interference. This leads to the creation of grating lobes. Overlapping methodologies have been studied in the literature and is an effective solution to mitigate this non-desired grating lobes. An overlapping strategy is proposed in this paper and can be seen as a shift by half the size of a subarray along 2-D. This enables a total mitigation of odd grating lobes. A comparison is made to benchmark this architecture performance compared to other existing strategies.
Original languageEnglish
Title of host publication17th European Conference on Antennas and Propagation (EuCAP 2023)
PublisherIEEE
ISBN (Print)9781665475419
DOIs
Publication statusPublished - 31 May 2023

Keywords

  • analog beamforming
  • digital beamforming
  • grating lobes
  • hybrid beamforming
  • multi-beam antenna
  • overlap
  • scanning range
  • subarrays

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Instrumentation

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