Reconfigurable intelligent surfaces as the key-enabling technology for smart electromagnetic environments
Future wireless systems integrating communication and sensing will require handling an
enormous amount of data with extremely low latency. Intense video streaming data traffic …
enormous amount of data with extremely low latency. Intense video streaming data traffic …
Waveform-selective metasurface absorber with a single-patch structure and lumped nonlinear circuit for a higher-order mode
Y Cheng, Y Qian, H Homma… - … on Antennas and …, 2023 - ieeexplore.ieee.org
Microwave absorbers (MAs) play an important role in protecting sensitive electronic devices
from electromagnetic (EM) interference by absorbing the energy of incoming waves and …
from electromagnetic (EM) interference by absorbing the energy of incoming waves and …
Terahertz pseudo‐waveform‐selective metasurface absorber based on a square‐patch structure loaded with linear circuit components
In recent years, metasurfaces composed of lumped nonlinear circuits have been reported to
exhibit the capability of detecting specific electromagnetic waves, even when the waves are …
exhibit the capability of detecting specific electromagnetic waves, even when the waves are …
Phase-gradient Huygens' metasurface coatings for dynamic beamforming in linear antennas
The beamforming capabilities of conformal cylindrical Huygens metasurface (HMS) coatings
for linear antennas are assessed. It is shown that by engineering the phase-gradient profile …
for linear antennas are assessed. It is shown that by engineering the phase-gradient profile …
Dual-band waveform-selective metasurfaces for reflection suppression
H Takeshita, D Nita, Y Cheng, AA Fathnan… - Applied Physics …, 2023 - pubs.aip.org
In this study, we present a design method to realize waveform-selective metasurface
absorbers operating in more than one frequency band, which is validated both numerically …
absorbers operating in more than one frequency band, which is validated both numerically …
Frequency-hopping wave engineering with metasurfaces
H Takeshita, AA Fathnan, D Nita, A Nagata… - Nature …, 2024 - nature.com
Wave phenomena can be artificially engineered by scattering from metasurfaces, which aids
in the design of radio-frequency and optical devices for wireless communication, sensing …
in the design of radio-frequency and optical devices for wireless communication, sensing …
Unsynchronized reconfigurable intelligent surfaces with pulse-width-based design
AA Fathnan, K Takimoto, M Tanikawa… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
In this correspondence, we present a reconfigurable intelligent surface (RIS) that reflects an
incident signal to the desired direction, depending on the pulse width. This unique …
incident signal to the desired direction, depending on the pulse width. This unique …
High performance antenna system in MIMO configuration for 5G wireless communications over sub-6 GHz spectrum
I ud Din, M Alibakhshikenari, BS Virdee, S Ullah… - Radio …, 2023 - ieeexplore.ieee.org
This paper presents a high-performance multiple input and multiple output (MIMO) antenna
comprising 2× 2 configuration of radiating elements that is designed for sub-6 GHz …
comprising 2× 2 configuration of radiating elements that is designed for sub-6 GHz …
1-bit transmission-type digital programmable coding metasurface with multi-functional beam-shaping capability for ka-band applications
Digital programmable coding metasurfaces (DPCMs) have recently attracted enormous
attention and have been broadly applied, owing to their ability to manipulate …
attention and have been broadly applied, owing to their ability to manipulate …
Toward Metantennas: Metamaterial-Based Antennas for Wireless Communications
Antennas have historically been the most common electromagnetic (EM) technology for
wireless communication systems. Antenna as hardware is entirely dependent on the EM …
wireless communication systems. Antenna as hardware is entirely dependent on the EM …