Abstract
A delay-locked loop based hybrid phase conjugator (DLL-HPC) is presented as a possible solution for 5G beamforming. Theoretical background, unique capabilities, and experimental verification are presented. The proposed DLL-HPC provides backwards compatibility with existing beamforming protocols as well as sub-millisecond beamsteering and automatic mobile target tracking with zero communication overhead. A proof-of-concept DLL-HPC prototype has been constructed from commercially available components to operate in the 5G NR-FR1 band, indicating that the technique can be readily adopted with available technology.
Highlights
Advanced beamforming techniques have been identified as a key enabling technology for coming Millimeter Wave 5G communications [1] [2] [3] [4] [5]
In order to verify the operation and versatility of the proposed delay-locked loop based hybrid phase conjugator (DLL-HPC) system architecture, a proof-of-concept prototype was fabricated using only commercially available off-the-shelf components to operate at 5G NR-FR1 frequencies from 2.100 GHz to 2.600 GHz
A phase-frequency detector (PFD) and charge pump were chosen as feedback in the delay-locked loop (DLL) portion of the design due to their fast settling times and 0 ̊ steady-state error
Summary
How to cite this paper: Bolt, M. and Adams, M. (2020) A High-Speed DLL-Based Hybrid Phase Conjugator for 5G Beamforming.
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