Miniaturized Liquid Crystal Slow Wave Phase Shifter Based on Nanowire Filled Membranes

Jost, Matthias; Gautam, Jay S. K.; Gomes, Leonardo G.; Reese, Roland; Polat, Ersin; Nickel, Matthias; Pinheiro, Julio M.; Serrano, Ariana L. C.; Maune, Holger; Rehder, Gustavo P.; Ferrari, Philippe; Jakoby, Rolf

doi:10.1109/lmwc.2018.2845938

Cited by 38 publications

(17 citation statements)

References 6 publications

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“…The development of new tunable structures is the second major field of research. Recently, planar structures utilizing plasmonic or slow wave effects have been presented [53][54][55]. These structures show a huge potential, as they faciitate integration.…”

Section: Discussionmentioning

confidence: 99%

Microwave Liquid Crystal Technology

et al. 2018

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Tunable Liquid Crystal (LC)-based microwave components are of increasing interest in academia and industry. Based on these components, numerous applications can be targeted such as tunable microwave filters and beam-steering antenna systems. With the commercialization of first LC-steered antennas for Ku-band e.g., by Kymeta and Alcan Systems, LC-based microwave components left early research stages behind. With the introduction of terrestrial 5G communications systems, moving to millimeter-wave communication, these systems can benefit from the unique properties of LC in terms of material quality. In this paper, we show recent developments in millimeter wave phase shifters for antenna arrays. The limits of classical high-performance metallic rectangular waveguides are clearly identified. A new implementation with dielectric waveguides is presented and compared to classic approaches.

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Section: Discussionmentioning

confidence: 99%

Microwave Liquid Crystal Technology

et al. 2018

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“…In addition, novel designs are being considered that have non-negligible activation cost. In [102], authors test a proof-of-concept of mmWave phase shifters with miniaturized liquid crystal. Further, in [103], liquid crystal polymers are proposed as an efficient solution for future flexible 5G mmWave devices.…”

Section: Modelmentioning

confidence: 99%

Coverage Optimization with a Dynamic Network of Drone Relays

Arribas

Mancuso

Cholvi

2020

IEEE Trans. on Mobile Comput.

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“…In addition, novel designs are being considered that have non-negligible activation cost. In [43], authors test a proof-of-concept of mmWave phase shifters with miniaturized liquid crystal. Further, in [44], liquid crystal polymers are proposed as an efficient solution for future flexible 5G mmWave devices.…”

Section: Modelmentioning

confidence: 99%

Optimizing mmWave Wireless Backhaul Scheduling

Arribas

Anta

Kowalski

et al. 2020

IEEE Trans. on Mobile Comput.

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Millimeter wave (mmWave) communication not only provides ultra-high speed radio access but is also ideally suited for efficient and flexible wireless backhauling. Specifically for dense deployments, a mmWave macro base station (MBS) that serves a large number of mmWave micro base stations (µBSs) is much more cost effective than legacy cellular architectures which connect µBSs to the core network through fibers. In addition, µBSs can cooperate with each other by acting as relay nodes. The directional nature of mmWave communication allows for spatial reuse, even in the presence of interference, which can be exploited to optimize mmWave wireless backhaul performance. The optimization opportunistically prioritizes the use of good connections at the MBS and further leverages compact and concurrent transmissions between µBS. Relays and directional antennas speed up communication, but increase the complexity of the scheduling problem. In this work, we study the mmWave backhaul scheduling problem and derive an MILP formulation for it as well as upper and lower bounds. We prove that the problem is NP-hard and can be approximated, but only if interference is negligible. By means of numerical simulations, we compare theoretical results with heuristics in small system sizes. Results validate the analysis and demonstrate the high performance of our heuristics in realistic cellular settings.

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Miniaturized Liquid Crystal Slow Wave Phase Shifter Based on Nanowire Filled Membranes

Cited by 38 publications

References 6 publications

Microwave Liquid Crystal Technology

Microwave Liquid Crystal Technology

Coverage Optimization with a Dynamic Network of Drone Relays

Optimizing mmWave Wireless Backhaul Scheduling

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