Substrate Integrated Components for Passive Millimeterwave-Frequency Beamforming Networks

Messem, Laura Van; Moerman, Arno; Caytan, Olivier; Paula, Igor Lima de; Hoflack, Bram; Stroobandt, Bram; Rogier, Hendrik

doi:10.1109/imws-amp53428.2021.9644020

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…To the best of the authors' knowledge, neither the components nor a full mmWave GCPW Butler matrix manufactured in standard printed circuit board (PCB) technology have yet been pursued. This article substantially extends the conference paper [32] by proposing three novel implementations of quadrature hybrid couplers and two novel crossover designs in the GCPW technology. The Butler matrix, incorporating the best performing building blocks and occupying a compact footprint of only 19.2 mm × 29.9 mm × 0.65 mm, allows easy integration with antenna topologies employing a GCPW feed, (M)SL via tapering, and (AF)SIW technology via slot coupling.…”

Section: Introductionmentioning

confidence: 78%

A 4 × 4 Millimeterwave-Frequency Butler Matrix in Grounded Co-Planar Waveguide Technology for Compact Integration With 5G Antenna Arrays

Messem

Moerman

Caytan

et al. 2023

IEEE Trans. Microwave Theory Techn.

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This article presents a novel 4 × 4 Butler matrix implemented in the grounded co-planar waveguide (GCPW) technology, compactly integrated with a highly efficient and broadband 1 × 4 air-filled substrate integrated waveguide (AFSIW) cavity-backed patch antenna array (AA), giving rise to a broad operational frequency range [23.75, 31 GHz] (26.5%) covering the n257, n258, and n261 fifth-generation (5G) bands. Three novel quadrature hybrid couplers and two crossovers are designed and compared to obtain the optimal building blocks for the Butler matrix. Within each of the supported 5G bands, the measured excess insertion loss of the optimized Butler matrix remains smaller than 3.5 dB with a maximal amplitude imbalance of ±0.9 dB. Isolation between input ports is higher than 16.4 dB. A maximal measured realized gain of 12.3 dBi is obtained for the Butler matrix with integrated 1 × 4 AA while ensuring a −3-dB beamwidth coverage of 110 • . The main beamsteering directions of [−40 • , −14 • , 14 • , 40 • ] exhibit measured deviations that stay within ±3 • . The fabricated Butler matrix with AA features a very compact footprint of 21.4 mm × 46.0 mm × 2 mm [2λ 0 × 4.3λ 0 × 0.2λ 0 ].

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Section: Introductionmentioning

confidence: 78%

A 4 × 4 Millimeterwave-Frequency Butler Matrix in Grounded Co-Planar Waveguide Technology for Compact Integration With 5G Antenna Arrays

Messem

Moerman

Caytan

et al. 2023

IEEE Trans. Microwave Theory Techn.

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“…This does not only allow for a thorough understanding of the link at each of its different stages, it also enables optimization of the link without setting up a complete mmWave-over-fiber distributed antenna system. During the conference, the different stages of the proposed model will be discussed in more detail and the versatility of the model will be showcased by using it in combination with a Butler-Matrix-based multi-beam remote antenna unit [9], [10].…”

Section: Discussionmentioning

confidence: 99%

System-Level Model for mmWave-over-Fiber Distributed Antenna Systems

Moerman

Caytan

Messem

et al. 2022

2022 IEEE International Symposium on Phased Array Systems &Amp; Technology (PAST)

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A mmWave-over-fiber distributed antenna system (DAS), in combination with highly efficient air-filled substrate-integrated-waveguide (AFSIW) remote antenna units (RAUs), proves to be a prime candidate to counter the harsh propagation conditions that arise at mmWave frequencies. This paper proposes a system-level model to accurately analyze the link quality of a downlink mmWave-over-fiber wireless link in a time-efficient way. The model includes a realistic antenna description, fiber losses, and non-linear effects of the opto-electrical/electro-optical transducers and the electrical amplifiers. This provides in-depth insight into the signal quality at each stage of the link and enables offline link optimization. In addition, the modular nature allows incorporating more advanced wireless channel models/measurements, which can be used to optimize RAU placement in the future. Finally, the model is validated by means of a measurement campaign, demonstrating good agreement.

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Substrate Integrated Coaxial Line Millimeterwave Components Manufactured in Standard PCB

Van Messem,

Moerman,

Caytan

et al. 2023

2023 IEEE 32nd Conference on Electrical Performance of Electronic Packaging and Systems (EPEPS)

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Substrate Integrated Components for Passive Millimeterwave-Frequency Beamforming Networks

Cited by 4 publications

References 9 publications

A 4 × 4 Millimeterwave-Frequency Butler Matrix in Grounded Co-Planar Waveguide Technology for Compact Integration With 5G Antenna Arrays

A 4 × 4 Millimeterwave-Frequency Butler Matrix in Grounded Co-Planar Waveguide Technology for Compact Integration With 5G Antenna Arrays

System-Level Model for mmWave-over-Fiber Distributed Antenna Systems

Substrate Integrated Coaxial Line Millimeterwave Components Manufactured in Standard PCB

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