Results 81 to 90 of about 9,744 (208)
Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth
Advanced Functional Materials, Volume 36, Issue 5, 15 January 2026.This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh +4 more
wiley +1 more source
Comparison of Antennas Electrical Tuning Methods for Mobile Applications
Известия высших учебных заведений России: Радиоэлектроника, 2017 The various methods of antenna electrical tuning for mobile handsets working in several LTE frequency bands are described. The PIFA-type antenna containing high and low frequency branches is proposed.
A. D. Grigoriev, B. Djalilov
doaj
Advanced Optical Materials, Volume 14, Issue 1, 9 January 2026.A diffractive neural networkdesigned metasurface operating at 86 GHz generates multiple holographic patterns by controlling the phase of subwavelength unit cells. A phase‐smoothing regularization mitigates mutual coupling, enabling accurate multifunctional wavefront shaping.
Damián Rodríguez‐Trujillo +5 more
wiley +1 more source
A reconfigurable H-shape antenna for wireless applications [PDF]
, 2010 The official published version of this article can be obtained from the link below - Copyright @ EuCAP2010This paper presents a novel H-Shaped reconfigurable microstrip patch antenna fed by a Grounded Coplanar Waveguide (GCPW) for wireless applications.
AbuTarboush, HF +4 more
core +1 more source
Transmitter Architectures Based on Near-Field Direct Antenna Modulation [PDF]
, 2008 A near-field direct antenna modulation (NFDAM) technique is introduced, where the radiated far-field signal is modulated by time-varying changes in the antenna near-field electromagnetic (EM) boundary conditions. This enables the transmitter to send data
Babakhani, Aydin +2 more
core +1 more source
Large-signal varactor measurements
Electronics Letters, 1970 A simple method of measuring the large-signal parameters of a varactor diode for parametric-amplifier and harmonic-generator applications is described. These large-signal parameters and the conventional small-signal parameters are used to calculate the performance of the diodes in an X-band parametric amplifier.
C.S. Aitchison, R. Davies
openaire +1 more source
Stacked Time‐Varying Metasurfaces
Advanced Optical Materials, Volume 14, Issue 4, 27 January 2026.Stacked, spatially uniform, time‐modulated metasurfaces replace cumbersome in‐plane modulation. A general design framework optimizes independently programmed temporal functions across cylindrical meta‐atom arrays with time‐varying plasma/collision frequencies, yielding magnet‐free isolation at the carrier and a temporal circulator analogue.
Mostafa Movahediqomi +3 more
wiley +1 more source
Advanced Photonics Research, Volume 7, Issue 1, January 2026.a) Schematic of the SSPP waveguide integrated with SRR metamaterial and MEMS actuator arrays with electric field confinement in the gap below the microbridge. b) Cross‐section of the MEMS actuator consists of a buried lead line and a microbridge at different deflection positions. c) The notch band in the microwave transmission characteristic shifts due
Van Minh Nguyen, Yoshiaki Kanamori
wiley +1 more source
Varactor-Tuned Dual-Mode Frequency Discriminator for Instantaneous Frequency Measurements [PDF]
, 2013 In this paper a novel varactor-tuned frequency discriminator that makes use of two tunable dual-mode microstrip resonators is demonstrated which doubles the discriminator tuning bandwidth.
Hong, Jiasheng +2 more
core +1 more source
Programmable Chiral Radiation via Spin‐Decoupled Metasurface with Integrated Compound Phases
Advanced Science, Volume 13, Issue 1, 5 January 2026.A programmable spin‐decoupled metasurface integrating propagation and geometric phases enables high‐purity chiral radiation with reconfigurable emission direction. Spin‐selective radiators combined with a compound phase decoupling strategy suppress undesired components, while embedded PIN diodes allow real‐time directional control.
Lu Song +8 more
wiley +1 more source