Results 71 to 80 of about 10,722 (267)
Bandwidth Improvement in Large Reflectarrays by Using True-Time Delay [PDF]
, 2008 A significant improvement in the bandwidth of large reflectarrays is demonstrated using elements which allow true-time delay. Two identical, large reflectarrays have been designed using different phase distributions to generate a collimated beam.
Barba Gea, Mariano +2 more
core +2 more sources
1-Bit Wideband Reconfigurable Reflectarray Design in Ku-Band
IEEE Access, 2022 In this paper, a 1-bit wideband electronically reconfigurable reflectarray (RRA) in Ku-band is proposed. In order to achieve the wideband and reconfigurable characteristics, the stacked microstrip structure and a 1-bit “microstrip line-slot line ...
Bin Xi +5 more
semanticscholar +1 more source
Electronics Letters, 2003 It is shown that the dominant factor controlling reflectarray bandwidth is the bandwidth of the radiating element, and that the effect of non-constant path delays over the surface of the flat reflector has little significance unless the aperture is electrically very large and the f/D ratio is small. An example of a polarisation-twist reflectarray using
openaire +1 more source
Wideband Single‐Layer Reflectarray Antenna for Millimeter‐Wave 5G Communications
Journal of Sensors, Volume 2026, Issue 1, 2026.The rapid evolution of intelligent applications has driven the demand for high‐performance antenna systems. Reflectarrays (RAs), also referred to as planar reflectors, have emerged as a promising solution for modern wireless and satellite communication systems due to their beam‐steering capability and high‐gain characteristics.
S. D. Khan +7 more
wiley +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2022 Introduction. Duplex satellite communication is commonly arranged using two spaced frequency bands, with one band receiving and the other band transmitting signals to a satellite.
S. V. Polenga +9 more
doaj +1 more source
A Novel Design Approach to X-Band Minkowski Reflectarray Antennas using the Full-Wave EM Simulation-based Complete Neural Model with a Hybrid GA-NM Algorithm [PDF]
, 2014 In this work, a novel multi-objective design optimization procedure is presented for the Minkowski Reflectarray RAs using a complete 3-D CST Microwave Studio MWS-based Multilayer Perceptron Neural Network MLP NN model including the substrate constant εr ...
Demirel, S., Guneş, F., NESİL, S.
core +1 more source
Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems
Advanced Optical Materials, Volume 13, Issue 33, November 25, 2025.The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley +1 more source
On the Role of Reflectarrays for Interplanetary Links
IEEE Open Journal of the Communications SocietyInterplanetary links (IPL) serve as crucial enablers for space exploration, facilitating secure and adaptable space missions. An integrated IPL with inter-satellite communication (IP-ISL) establishes a unified deep space network, expanding coverage and reducing atmospheric losses.
Eray Guven +3 more
openaire +3 more sources
Advanced Electronic Materials, Volume 11, Issue 9, June 2025.A novel optically transparent reflectarray design approach based on multi‐resonant phase‐shifting elements with minimal fine metal line (FML) structures and low‐loss single‐layer cyclic olefin copolymer (COC) substrate is proposed. The design achieves exceptional antenna performance while ensuring high optical transparency, validated through wireless ...
Longzhu Cai +5 more
wiley +1 more source
Fractal and FractionalIn this article, a high-gain axisymmetric Minkowski fractal reflectarray is designed and fabricated for Ku-Band satellite internet communications. High gain is achieved here by carefully optimising the number of unit cells, their shape modifier, focal ...
Prabhat Kumar Patnaik +5 more
doaj +1 more source