| 1. |
- Meyer, E., et al.
(författare)
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The state of the art in beyond 5G distributed massive multiple-input multiple-output communication system solutions
- 2022
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Ingår i: Open Research Europe. - : F1000 Research Ltd. - 2732-5121. ; 2
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Forskningsöversikt (refereegranskat)abstract
- Beyond fifth generation (5G) communication systems aim towards data rates in the tera bits per second range, with improved and flexible coverage options, introducing many new technological challenges in the fields of network architecture, signal pro- cessing, and radio frequency front-ends. One option is to move towards cell-free, or distributed massive Multiple-Input Multiple-Output (MIMO) network architectures and highly integrated front-end solutions. This paper presents an outlook on be- yond 5G distributed massive MIMO communication systems, the signal processing, characterisation and simulation challenges, and an overview of the state of the art in millimetre wave antennas and electronics.
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| 2. |
- Zhang, Yingqi, 1995, et al.
(författare)
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Advanced Dielectric Resonator Antenna Technology for 5G and 6G Applications
- 2024
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Ingår i: Sensors. - 1424-8220. ; 24:5
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Forskningsöversikt (refereegranskat)abstract
- We review dielectric resonator antenna (DRA) designs. This review examines recent advancements across several categories, specifically focusing on their applicability in array configurations for millimeter-wave (mmW) bands, particularly in the context of 5G and beyond 5G applications. Notably, the off-chip DRA designs, including in-substrate and compact DRAs, have gained prominence in recent years. This surge in popularity can be attributed to the rapid development of cost-effective multilayer laminate manufacturing techniques, such as printed circuit boards (PCBs) and low-temperature co-fired ceramic (LTCC). Furthermore, there is a growing demand for DRAs with beam-steering, dual-band functions, and on-chip alignment availability, as they offer versatile alternatives to traditional lossy printed antennas. DRAs exhibit distinct advantages of lower conductive losses and greater flexibility in shapes and materials. We discuss and compare the performances of different DRA designs, considering their material usage, manufacturing feasibility, overall performance, and applications. By exploring the pros and cons of these diverse DRA designs, this review provides valuable insights for researchers in the field.
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| 3. |
- Zhang, Yingqi, 1995, et al.
(författare)
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Compact Wide-Scan Dual-Polarized Dielectric Resonator Antenna Array Based on LTCC Technology for Millimeter-Wave Applications
- 2023
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Ingår i: 2023 International Conference on Electromagnetics in Advanced Applications, ICEAA 2023. ; , s. 96-99
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Konferensbidrag (refereegranskat)abstract
- A compact dual-polarized (DP) dielectric resonator antenna (DRA) for two dimensional (2D) wide-angle scanning phased arrays operating at 28 GHz is presented. The proposed design is based on low-temperature co-fired ceramic (LTCC) technology by virtue of the benefits in terms of scalability at millimeter-wave (mmW) frequencies. The developed DRA element integrates two stacked cylindrical dielectric resonators (DRs) surrounded by a metal frame and is fed through a cross-shaped slot. An annular cavity separates the stacked DRs from the metal frame near the antenna aperture to enhance the active impedance-matching to air. The DRA element is analyzed in the infinite array environment and is characterized using an 8 × 8 array architecture consisting of 2 × 2 subarray tiles. This design is optimized for operation in the n261 band (27.5-28.35 GHz) with the active reflection coefficient ||Γ|| ≤ -10 dB across the targeted ±60° scan range. The array features a scan loss ranging from 3.2 dB to 3.9 dB in the H-, D-, and V-planes for both polarizations.
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