Results 71 to 80 of about 533,528 (216)
International Journal of Antennas and Propagation, Volume 2025, Issue 1, 2025.The radiation pattern of the broadband metasurface (MTS) antenna often has large sidelobe and large H‐plane cross‐polarization (cross‐pol) at high frequencies because both the fundamental mode and the higher order modes (HOMs) have large sidelobe at these frequencies. However, as for the above two reasons that leading to deterioration of high‐frequency
Liu Hailong +8 more
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A Compact Ultralow‐Profile Wideband and High‐Efficiency Folded Transmitarray
International Journal of RF and Microwave Computer-Aided Engineering, Volume 2025, Issue 1, 2025.A compact ultralow‐profile wideband and high‐efficiency folded transmitarray antenna (FTA) is proposed in this letter. It consists of three parts: a top transmission surface (TS), a bottom reflection surface (RS), and an embedded compact planar feed. Using the principle of ray tracing and introducing additional phase compensation in the RS, the antenna
Meizi Wu, Lu Guo, Matteo Bruno Lodi
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A reconfigurable transmitarray unit cell employing liquid metal
IET Microwaves, Antennas &Propagation, Volume 18, Issue 12, Page 985-991, December 2024.In this paper, a reconfigurable transmitarray unit cell using liquid metal is presented. It consists of three conducting layers where the geometries of the resonators, on the different layers, differ and consist of an arrow shape together with rotated split rings. It is the first time that a transmitarray unit cell, reconfigured employing liquid metal,
Zhishu Qu +5 more
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IEEE AccessThis study introduces a high-accuracy beam pattern synthesis technique using comprehensive unit cell and near-field measurement environment modeling for a miniaturized $8\times 8$ transmitarray antenna with a unit cell period of $0.4\lambda _{0 ...
Myeongha Hwang +4 more
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Investigation of microwave power transfer near sea surface with 2D parabolic equation method
IET Power Electronics, Volume 17, Issue 15, Page 2278-2287, 25 November 2024.Due to the existence of the evaporation duct near‐sea‐surface described as an inhomogeneous refractive index of the atmosphere, microwaves can be trapped in the duct and propagate along it. To investigate wireless power transfer over the sea surface, we utilize the two‐dimensional parabolic equation to calculate the electric field distribution and to ...
Jinyi Hui +4 more
wiley +1 more source
Charge‐Programmable Photopolymers for 3D Electronics via Additive Manufacturing
Advanced Functional Materials, Volume 34, Issue 18, May 2, 2024.Charge‐programmed 3D printing fabricates 3D electronics with reduced weight and high precision. Photo‐curable resins are designed for exploring the achievable materials property space. Charge and crosslink densities synergistically impact the nano catalyst‐guided selective metal deposition on compatible dielectric materials.
Zhen Wang +8 more
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A High-Gain Transmitarray for Generating Dual-Mode OAM Beams
IEEE Access, 2018 This paper proposes a novel transmitarray antenna which can achieve high gain and produce dual-mode orbital angular momentum (OAM) beams in Ku-band. Two back-to-back wideband dual-polarized microstrip antennas are employed as the unit cells, which are ...
Fan Qin +5 more
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A Novel Circularly Polarized Folded Transmitarray Antenna with Integrated Radiation and Scattering Performance. [PDF]
Sensors (Basel), 2022 Guo Z +6 more
europepmc +1 more source
A High-Efficiency Dual-Polarized Transmitarray Antenna with Flat Gain Performance
MicromachinesThis article presents a high-efficiency dual-polarized transmitarray antenna which achieves flat gain characteristics. First, a wideband triple-layer subwavelength element is designed, achieving high transmission amplitude and a full 360° transmission ...
Xin-Hui Jiao, Li Zhang, Yu Zhang
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Wideband and High-Efficiency Circularly Polarized Unit-Cell for X and Ka-Band Transmitarrays
IEEE Open Journal of Antennas and PropagationThis paper presents a novel approach for linear to circular polarization (LP-CP) conversion in transmitarray antennas. The proposed conversion mechanism differs significantly from previous published realizations.
Alessandro de Oliveira Cabral Junior +2 more
doaj +1 more source