Results 41 to 50 of about 303,910 (293)
Design and Measurements of a Double Ridged Guide Horn Feed for P-Band Direct Path Measurements [PDF]
, 2013 This paper presents the design and realization of a compact Double Ridged Guide Horn (DRGH), developed to perform direct path measurements at low frequency in a compact test ...
Alicja, Kość +4 more
core
Wavelength‐Multiplexed 2D Beam Steering via a Passive Diffractive Network
Advanced Optical Materials, EarlyView.Illustration of a wavelength‐multiplexed diffractive beam steering system, which is composed of K cascaded diffractive layers, each containing phase‐modulating elements that are jointly optimized using deep learning–based optimization. When illuminated with a set of wavelengths {λ1,λ2,…,λNw}$\{ {{{\lambda }_1},{{\lambda }_2},\ldots ,{{\lambda }_{{{N}_w}
Che‐Yung Shen +5 more
wiley +1 more source
Advanced Science, EarlyView.Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
wiley +1 more source
The Journal of EngineeringApplications for an antenna structure produced with additive manufacturing technology are numerous and promising. This study focuses explicitly on utilizing micro‐laser sintering (MLS) three‐dimensional (3D) printing technology to fabricate two ...
Sheikh Dobir Hossain +3 more
doaj +1 more source
A Novel Miniaturized Four-Ridged Horn Antenna with Enhanced Gain
International Journal of Antennas and Propagation, 2021 Miniaturization of wideband antennas has attracted much attention for its wide application in modern society. This article proposes a novel broadband miniaturized four-ridged horn antenna (FRHA) with high gain operating from 2.6 to 8.4 GHz.
Yunqing Cao +3 more
doaj +1 more source
A printed transition for matching improvement of SIW horn antennas [PDF]
The substrate integrated waveguide (SIW) technology allows to construct several types of commonly used antennas in a planar way. However, frequency limitations associated to commercial substrates appear in the implementation of certain types of antennas,
Mosig, J. R. +3 more
core +2 more sources
Kresling Origami‐Based Metamaterial Robot for Dynamic Electromagnetic Control
Advanced Science, EarlyView.A reconfigurable metamaterial system integrates deformable origami units with high‐permittivity ceramic plates. Pneumatic switching between structural states alters local resonance conditions, enabling dynamic radar stealth and adaptive microwave reflection for mobile communication.
Xinxi Zeng +13 more
wiley +1 more source
Advanced Science, EarlyView.The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang +6 more
wiley +1 more source
Efek Jumlah Ridge terhadap Performansi Antena Horn untuk Aplikasi Tomografi
Jurnal ElkomikaABSTRAK Paper ini membahas pengaruh jumlah profil ridge terhadap performansi antena horn untuk aplikasi tomografi. Penelitian ini mengobservasi dua variasi jumlah ridge, yaitu dua ridge dan empat ridge.
FOLIN OKTAFIANI +2 more
doaj +1 more source
Signal manipulation through horn antennas loaded with metamaterial-inspired particles: A review
EPJ Applied Metamaterials, 2015 This review paper summarizes our latest results on designing metamaterial-inspired particles that can be inserted inside horn antennas to provide signal manipulation capabilities to the overall system.
Barbuto Mirko +4 more
doaj +1 more source