D-Band Perfect Anomalous Reflectors for 6G Applications

Kato, Yoshihito; Omori, Kohei; Sanada, Atsushi

doi:10.1109/access.2021.3130058

Cited by 23 publications

(18 citation statements)

References 39 publications

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“…S_{11}^{0 \rightarrow N_{0} + N_{1}} \left|\right.\right)^{2}$, which indicated the power deflection efficiency from Floquet mode 0 to Floquet mode N 0 + N 1 . [ 47 ]…”

Section: Methodsmentioning

confidence: 99%

Indoor Non‐Line‐of‐Sight Millimeter‐Wave Coverage Enhancements by Field‐Reorganizable Passive Digital Coding Metasurfaces

Han,

Ma,

et al. 2023

Advanced Photonics Research

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Digital metasurfaces define a novel methodology for metasurface designs by adopting discrete coding meta‐atoms to engineer electromagnetic waves in programmable ways. Herein, a novel field‐reorganizable digital metasurface (FRDM) that can be used to enhance the indoor non‐line‐of‐sight (NLOS) millimeter‐wave (mmWave) signal coverage is presented. The passive binary supercells which can be reorganized with an in situ optimization characteristic to deflect the incoming mmWaves into the blind area with adjustable angles are proposed. The indoor L‐shaped corridor signal coverage simulated by the ray‐tracing technique confirms that the NLOS blind area is effectively communicated using the passive FRDM. Practical environment experiments using FRDMs with different coding sequences are conducted, indicating that the averaged signal intensity is increased by over 10 dB in the NLOS blind area in a wide operating frequency band from 26 to 30 GHz by reorganizing the passive digital metasurfaces. The results suggest that the proposed FRDM enabled by the reorganizable binary supercells is a highly flexible, low‐cost, and extensible solution for B5G and 6G mmWave wireless communications.

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“…S_{11}^{0 \rightarrow N_{0} + N_{1}} \left|\right.\right)^{2}$, which indicated the power deflection efficiency from Floquet mode 0 to Floquet mode N 0 + N 1 . [ 47 ]…”

Section: Methodsmentioning

confidence: 99%

Indoor Non‐Line‐of‐Sight Millimeter‐Wave Coverage Enhancements by Field‐Reorganizable Passive Digital Coding Metasurfaces

Han,

Ma,

et al. 2023

Advanced Photonics Research

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“…To suppress the conductivity degradation of the metallic layers, the metallic layers were formed on the substrate with a direct plating of a 12 μm thick Cu layer without introducing a seed layer after surface modification of the substrate using ultraviolet irradiation. 9,10 Accurate knowledge of substrate material parameters is essential for the FSS design. Resonator methods are generally applied to accurately characterize low-loss materials.…”

Section: Design Of Transmission-type Fssmentioning

confidence: 99%

“…For the J‐band FSSs, a COP substrate with a thickness of 0.1 mm was used as the substrate material. To suppress the conductivity degradation of the metallic layers, the metallic layers were formed on the substrate with a direct plating of a 12

{\rm{\mu }}

m thick Cu layer without introducing a seed layer after surface modification of the substrate using ultraviolet irradiation 9,10 …”

Section: Design Of Transmission‐type Fssmentioning

confidence: 99%

Comparison of free‐space VNA and TDS measurements using transmission‐type frequency selective surfaces

Kato

2023

Micro & Optical Tech Letters

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A method for directly comparing vector network analyzer (VNA) and time‐domain spectrometer (TDS) measurements in free space using transmission‐type frequency selective surfaces (FSSs) is proposed. The transmission characteristics of FSSs with artificially controlled frequency dispersions facilitate flexible and detailed comparisons of VNA and TDS measurements. Four FSSs were designed as verification devices of free space measurements. The proposed approach was demonstrated in the D and J bands by comparing the measurement results of the transmission amplitude and phase characteristics of the FSSs obtained using VNA and TDS systems. The amplitude and phase results obtained using both systems were in good agreement, confirming the consistency and validity of the VNA and TDS measurements.

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“…The frequency bands for which this 6G antenna was designed are presented in Table 1 [5]. Among the bidder fractal objects, the most popular are fractal curves such as the fractal curve type, for example, the Koch Curve (1.2618), Sierpinski Triangle (1.5848), Sierpinski Carpet (1.8928), Koch Snowflake (1.2618) and Minkowski Curve (1.465), with fractal dimensions written in parentheses.…”

Section: The 6g Radio Frequencymentioning

confidence: 99%

“…The favorable frequency bands for which this 6G Minkowski fractal antenna (four iterations) was here designed, are 110 GHz to 170 GHz (WR-6), respectively, 170 GHz to 260 GHz (WR-4), [5]. The strips were chosen according to the indications on the website https://www.miwv.com/what-is-6g (accessed on 11 June 2022).…”

Section: Minkowski Fractal Antennamentioning

confidence: 99%

Minkowski’s Loop Fractal Antenna Dedicated to Sixth Generation (6G) Communication

et al. 2022

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In this study, we will discuss the engineering construction of a special sixth generation (6G) antenna, based on the fractal called Minkowski’s loop. The antenna has the shape of this known fractal, set at four iterations, to obtain maximum performance. The frequency bands for which this 6G fractal antenna was designed in the current paper are 170 GHz to 260 GHz (WR-4) and 110 GHz to 170 GHz (WR-6), respectively. The three resonant frequencies, optimally used, are equal to 140 GHz (WR-6) for the first, 182 GHz (WR-4) for the second and 191 GHz (WR-4) for the third. For these frequencies the electromagnetic behaviors of fractal antennas and their graphical representations are highlighted.

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D-Band Perfect Anomalous Reflectors for 6G Applications

Cited by 23 publications

References 39 publications

Indoor Non‐Line‐of‐Sight Millimeter‐Wave Coverage Enhancements by Field‐Reorganizable Passive Digital Coding Metasurfaces

Indoor Non‐Line‐of‐Sight Millimeter‐Wave Coverage Enhancements by Field‐Reorganizable Passive Digital Coding Metasurfaces

Comparison of free‐space VNA and TDS measurements using transmission‐type frequency selective surfaces

Minkowski’s Loop Fractal Antenna Dedicated to Sixth Generation (6G) Communication

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