Results 1 to 10 of about 1,738,073 (376)
SNR‐dependent drone classification using convolutional neural networks
IET Radar, Sonar & Navigation, 2022 Radar sensing offers a method of achieving 24‐h all‐weather drone surveillance, but in order to be maximally effective, systems need to be able to discriminate between birds and drones.
Holly Dale +5 more
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IEEE Journal of MicrowavesThis article presents a reconfigurable unit cell for transmitarrays at $10 \,\mathrm{GHz}$ based on the fishnet metamaterial structure. The proposed design achieves a phase shift of up to $180 \mathrm{^{\circ }}$ between different states and additional ...
Adrian Diepolder +5 more
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IEEE Journal of MicrowavesThis article presents a novel transmission-only calibration technique for free-space quasi-optical material characterization, based on rotating the sample around its axis to vary the angle of incidence under which the sample is illuminated.
Adrian Diepolder +5 more
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A Ku Wideband Circularly Polarized Microstrip Antenna Array with Low Profile Crossed-Dipole Element
International Journal of Antennas and Propagation, 2023 This paper presents a novel Ku wideband circularly polarized (CP) antenna array composed of crossed-dipole element (CDE) and fed through sequential rotation (SR) feeding technique.
Haipeng Liu, Yunhua Zhang, Xiaowen Zhao
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Design of Compact Quasi-Elliptic Bandpass Filters Based on Coaxial Inset Resonators
IEEE Access, 2023 This article reports a novel inset resonator configuration for coaxial filter applications with quasi-elliptic responses. The design and analysis of the inset resonator are discussed in detail and accurately modeled as a capacitively-loaded stepped ...
Abdulrahman Widaa +2 more
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A Flexible and Lightweight Biomass-Reinforced Microwave Absorber
Nano-Micro Letters, 2020 A flexible and lightweight microwave absorber was prepared by a vacuum filtration method. The remarkable microwave absorbency makes the absorber paper attractive in wireless wearable electronics field.
Yan Cheng +4 more
semanticscholar +1 more source
Microwave-optical quantum frequency conversion
Optica, 2021 Photons at microwave and optical frequencies are principal carriers for quantum information. While microwave photons can be effectively controlled at the local circuit level, optical photons can propagate over long distances.
Xu Han +4 more
semanticscholar +1 more source
A Sub-Aperture-Based Calibration Algorithm for MIMO Antenna Arrays
IEEE Open Journal of Antennas and PropagationIn order to ensure high-resolution angle estimation results, antenna apertures of radar sensors become large relative to the wavelength. To prevent high sidelobe levels, the number of antennas is constantly increased, generally through the employment of ...
Matthias Linder +4 more
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Spacial Energy Distribution Manipulation with Multi-focus Huygens Metamirror
Scientific Reports, 2017 Huygens metasurface is a planar array of crossed electric and magnetic dipoles, which provide specific surface current to tailor the electromagnetic field distribution.
Zhuochao Wang +3 more
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Wide Band Polarization Detector for Sub–6 GHz 5G Applications
IEEE Access, 2022 This paper presents the analysis and the design of a polarization detector for sub–6 GHz 5G applications. The proposed design operates in the frequency range from 2 to 4 GHz to cover the 5G NR frequency bands n40/n41/n78. The proposed polarization
Eman M. Eldesouki +3 more
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