Ultra-high Gain Transmitarray Antenna for Wireless Backhauling at 280 GHz

Koutsos, Orestis; Manzillo, Francesco Foglia; Clemente, Antonio; Caillet, Mathieu; Sauleau, Ronan

doi:10.1109/irmmw-thz50927.2022.9895764

Cited by 4 publications

(3 citation statements)

References 8 publications

(8 reference statements)

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“…Future work will address the problem of absolute pose estimation and improve the robustness to artifacts in radar images. To this purpose, ultra-high gain antennas [66], with HPBW less than 1 ˝, could be used to approximate a near-pencil beam behaviour and reduce the outliers and artifacts in radar measurements, in order to simplify the GEM pre-processing.…”

Section: Discussionmentioning

confidence: 99%

Radio SLAM for 6G Systems at THz Frequencies: Design and Experimental Validation

Lotti

Pasolini

Guerra

et al. 2023

IEEE J. Sel. Top. Signal Process.

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Next-generation wireless networks will see the convergence of communication and sensing, also exploiting the availability of large bandwidths in the THz spectrum and electrically large antenna arrays on handheld devices. In particular, it is envisaged that user devices will be able to automatically scan their surroundings by steering a very narrow antenna beam and collecting echoes reflected by objects and walls. These data will be utilized to derive a map of the surrounding indoor environment and infer users' trajectories using simultaneous localization and mapping (SLAM) techniques. In this paper, we address this scenario by proposing original radio-SLAM (R-SLAM) algorithms, derived from image processing techniques, to map the environment and pinpoint the device position in the map starting from measurements sensed by a mobile THz radar. Initially, to fully understand the THz backscattering phenomenon, we provide an experimental characterization of the THz backscattering channel in indoor environments. Then, the performance of the proposed algorithms is assessed using realworld THz radar measurements and is compared with state-ofthe-art SLAM techniques, demonstrating the superiority of the proposed approaches.

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Section: Discussionmentioning

confidence: 99%

Radio SLAM for 6G Systems at THz Frequencies: Design and Experimental Validation

Lotti

Pasolini

Guerra

et al. 2023

IEEE J. Sel. Top. Signal Process.

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“…The selected UC design has been first presented in optics [20]- [22] to achieve an asymmetric transmission in linear polarization with extremely broad bandwidth. This structure has recently been proposed for TA designs [18], [23], [24], as it allows one to modify the phase of the transmission coefficient by optimizing only a single impedance sheet [24].…”

Section: Introductionmentioning

confidence: 99%

Experimental Demonstration of a 43-dBi Gain Transmitarray in PCB Technology for Backhauling in the 300-GHz Band

Koutsos

Manzillo

Caillet

et al. 2023

IEEE Trans. THz Sci. Technol.

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In this paper, a low-cost transmitarray antenna, fabricated using standard printed circuit board (PCB) technology is reported, with application to point-to-point communications in the 300-GHz band. The proposed structure is vialess and comprises only three metal layers with tailored anisotropic properties in transmission. Based on a previously reported numerical model and design of the unit-cell, a 3-bit 140×140-element transmitarray antenna is optimized and demonstrated. The transmission coefficients of the eight unit-cells are characterized experimentally. They exhibit linear phase responses and high transmissivity in a 100-GHz bandwidth. A peak gain of 43.3 dBi and an aperture efficiency of 39.0% are measured. The prototype performance is comparable to that of state-of-the-art high-gain antennas leveraging on more expensive technologies.

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“…Therefore, these factors need to be carefully accounted when designing RISaided wireless systems with large RIS apertures. This problem also happens as we increase the operating frequency towards THz, which requires compensating the increasing free-space path losses [20]. Hence, for a given use case, it is necessary to optimize the RIS angular coverage, the link distance, and operation frequency.…”

Section: Ris-aided-link Budget Analysismentioning

confidence: 99%

Hotel Architecture in Portugal

Matos¹

A Portrait of State-of-the-Art Research at the Technical University of Lisbon

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The demand for unprecedented performance in the upcoming 6G wireless networks is fomenting the research on THz communications empowered by Reconfigurable Inteligent Surfaces (RISs). A wide range of use cases have been proposed, most of them, assuming high-level RIS models that overlook some of the hardware impairments that this technology faces. The expectation is that the emergent reconfigurable THz technologies will eventually overcome its current limitations. This disassociation from the hardware may mask nonphysical assumptions, perceived as hardware limitations. In this paper, a top-down approach bounded by physical constraints is presented, distilling from system-level specifications, hardware requirements, and upper bounds for the RIS-aided system performance. We consider D-band indoor and outdoor scenarios where a more realistic assessment of the state-of-the-art solution can be made. The goal is to highlight the intricacies of the design procedure based on sound assumptions for the RIS performance. For a given signal range and angular coverage, we quantify the required RIS size, number of switching elements, and maximum achievable bandwidth and capacity.

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Ultra-high Gain Transmitarray Antenna for Wireless Backhauling at 280 GHz

Cited by 4 publications

References 8 publications

Radio SLAM for 6G Systems at THz Frequencies: Design and Experimental Validation

Radio SLAM for 6G Systems at THz Frequencies: Design and Experimental Validation

Experimental Demonstration of a 43-dBi Gain Transmitarray in PCB Technology for Backhauling in the 300-GHz Band

Hotel Architecture in Portugal

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