Results 1 to 10 of about 569,976 (205)
Electronically steered metasurface antenna [PDF]
Scientific Reports, 2021 Mobile devices, climate science, and autonomous vehicles all require advanced microwave antennas for imaging, radar, and wireless communications. We propose a waveguide-fed metasurface antenna architecture that enables electronic beamsteering from a ...
Michael Boyarsky +4 more
doaj +6 more sources
A universal metasurface antenna to manipulate all fundamental characteristics of electromagnetic waves. [PDF]
Nat Commun, 2023 Metasurfaces have promising potential to revolutionize a variety of photonic and electronic device technologies. However, metasurfaces that can simultaneously and independently control all electromagnetics (EM) waves’ properties, including amplitude ...
Wu GB +6 more
europepmc +2 more sources
Multimode OAM beam generation through 1-bit programmable metasurface antenna. [PDF]
Sci Rep, 2023 modern wireless communication, the orbital angular momentum (OAM) beam is considered as an important technology. Some considerable efforts have been devoted to using this technology for channel capacity enhancement as much as possible.
Nadi M, Sedighy SH, Cheldavi A.
europepmc +2 more sources
Deep-learning-assisted reconfigurable metasurface antenna for real-time holographic beam steering. [PDF]
Nanophotonics, 2023 We propose a metasurface antenna capable of real-time holographic beam steering. An array of reconfigurable dipoles can generate on-demand far-field patterns of radiation through the specific encoding of meta-atomic states i.e., the configuration of each
Ma H, Kim JS, Choe JH, Park QH.
europepmc +3 more sources
A synthetic moving-envelope metasurface antenna for independent control of arbitrary harmonic orders. [PDF]
Nat CommunFlexible frequency controls are crucial in many photonic and electronic applications, ranging from communications systems, spectroscopy, and metrology to quantum information processing.
Wu GB +6 more
europepmc +2 more sources
A True Metasurface Antenna. [PDF]
Sci Rep, 2016 AbstractWe present a true metasurface antenna based on electrically-small resonators. The resonators are placed on a flat surface and connected to one feed point using corporate feed. Unlike conventional array antennas where the distance between adjacent antennas is half wavelength to reduce mutual coupling between adjacent antennas, here the distance ...
El Badawe M, Almoneef TS, Ramahi OM.
europepmc +4 more sources
A Beam-Split Metasurface Antenna for 5G Applications
IEEE Access, 2022 This article presents a hybrid metasurface split beam antenna for fifth-generation (5G) mobile applications at 3.5 GHz. Multi-beam antennas with high directivity are required for a 5G mobile network. It can be achieved by having an array antenna.
Tamara Z. Fadhil +4 more
doaj +2 more sources
A near zero refractive indexed non-uniform metasurface for broadband RCS reduction of an antipodal Vivaldi antenna [PDF]
Scientific ReportsThis research reports the design of a polarization converter based non-uniform metasurface in which the unit cells have been arranged in such a manner that both co and cross polarized reflections are minimized which results in mitigation of radar cross ...
Priyanka Das +2 more
doaj +2 more sources
PD Koch Complementary Fractal UHF Antenna Based on AMC Metasurface [PDF]
SensorsTo meet the high-sensitivity requirement of ultra-high-frequency (UHF) sensors for electromagnetic waves radiated by partial discharge (PD) in power equipment of substations, this paper proposes a Koch complementary fractal UHF antenna based on the ...
Haonan Zhang +5 more
doaj +2 more sources
Flat Gain Broadband Metasurface Antennas [PDF]
IEEE Transactions on Antennas and Propagation, 2021 Modulated metasurface (MTS) antennas can provide a broadside pencil beam at the frequency where the cylindrical surface wave (SW) wavelength matches the period of the impedance modulation. For modulations with constant period, the mismatch between the SW wavelength and the period imposes a limitation on the gain-bandwidth product.
Faenzi, Marco +2 more
openaire +3 more sources