Results 11 to 20 of about 1,055 (144)
Performance limits of optical rectennas [PDF]
, 2015 Optical rectennas are antenna-coupled diode rectifiers that receive and convert optical-frequency electromagnetic radiation into DC output. Because classical rectennas working at microwave frequencies can achieve very high rectification efficiencies ...
Joshi, Saumil
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Graphene Geometric Diodes for Optical Rectennas [PDF]
, 2014 Optical rectennas, which are micro-antennas to convert optical-frequency radiation to alternating current combined with ultrahigh-speed diodes to rectify the current, can in principle provide high conversion efficiency solar cells and sensitive detectors.
Zhu, Zixu James
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IEEE Open Journal of Antennas and Propagation, 2022 Despite an increasing interest in wearable wireless power transmission (WPT), until now, wearable antennas have been unable to simultaneously harvest from near-field resonant and far-field radiative WPT. Here, a dual-port antenna is proposed, integrating
Mahmoud Wagih +3 more
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Nanojunction Material Effect on the Photoelectric Response of Single-Wall Carbon Nanotube Rectennas [PDF]
ACS Omega, 2021 Lina Tizani +3 more
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Optical Nanoantennas for Photovoltaic Applications
Nanomaterials, 2021 In the last decade, the development and progress of nanotechnology has enabled a better understanding of the light–matter interaction at the nanoscale. Its unique capability to fabricate new structures at atomic scale has already produced novel materials
Francisco Duarte +3 more
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Dual-Polarized Wide-Angle Energy Harvester for Self-Powered IoT Devices
IEEE Access, 2021 In this work, a dual-polarized wide-angle energy harvester operating at 3.75 GHz is proposed for ambient RF energy harvesting applications. A $4\times 4$ array harvester can efficiently harvest incident RF waves from all polarizations, resulting in ...
Minh Dinh +3 more
doaj +1 more source
Meshed High-Impedance Matching Network-Free Rectenna Optimized for Additive Manufacturing
IEEE Open Journal of Antennas and Propagation, 2020 Additive manufacturing using direct-write or screen printing represent low-waste methods for fabricating antennas on low-cost flexible substrates. To realize rectennas using low-resolution printing methods, high-impedance antennas with simple printable ...
Mahmoud Wagih +2 more
doaj +1 more source
Nanoscale Graphene-Based Ballistic Rectifiers for Detection of High Terahertz Frequency Optical Signals. [PDF]
Small SciBallistic graphene rectifier capable of operating at frequencies up to 3 THz, engineered through asymmetric nanojunction geometries in high‐mobility monolayer graphene encapsulated in hexagonal boron nitride Graphene exhibits the longest carrier mean free path of any known electronic material, yet only a few device concepts have successfully leveraged ...
Shi L +4 more
europepmc +2 more sources
A Multi-Tone Rectenna System for Wireless Power Transfer
Energies, 2020 Battery-less sensors need a fast and stable wireless charging mechanism to ensure that they are being correctly activated and properly working. The major drawback of state-of-the-art wireless power transfer solutions stands in the maximum Equivalent ...
Simone Ciccia +5 more
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A novel 24 GHz circularly polarised metasurface rectenna
IET Microwaves, Antennas & Propagation, 2023 A novel 24 GHz circularly polarised metasurface rectenna for wireless power transmission is designed in this study. Based on experimental measurements and retro‐simulation, an effective approach is proposed to extract the parasitic parameters of a ...
Wei Huang +4 more
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