Results 71 to 80 of about 1,969 (224)
Figure of merit for multiband antennas [PDF]
, 2003 This communication defines a figure of merit for multiband antennas that gives an objective quantification of the similarities between radiation patterns at the different antenna operating bands.Peer ...
Rius Casals, Juan Manuel +2 more
core +1 more source
Tunable Plasmon‐Enhanced Wide‐Angle Terahertz Perfect Absorption via Lorentz Media
Nanophotonics, Volume 15, Issue 11, 13 June 2026.A planar graphene‐Lorentz‐DBR structure realizes wide‐angle terahertz perfect absorption through a composite phase‐amplitude matching mechanism. The Lorentz dielectric provides dispersive phase compensation and controlled loss, whereas graphene supports dissipative coupling, enabling high absorption up to 80° incidence and multichannel spectral ...
Yuxuan Zhou
wiley +1 more source
A Multiband Fractal Dipole Antenna for Wireless Communication Applications [PDF]
Engineering and Technology Journal, 2010 mmunication applications. The proposed fractal antenna design is based onfractal geometry of the second level tent function transformation. Due to theresulting geometrical structures of a fractal tent function curve depend on thestarting angles of the ...
Jawad K. Ali +2 more
doaj +1 more source
Multiband evanescent waveguide antenna [PDF]
Microwave and Optical Technology Letters, 2015 A dual/triband evanescent waveguide antenna element is presented. The antenna operates in the 740–790, 1.9–2.2, and 2.5–2.7 GHz frequency bands. It measures 55 × 27.5 × 53 mm3 and occupies a small volume making it attractive for miniaturized applications. © 2015 Wiley Periodicals, Inc.
Basavarajappa, Vedaprabhu +1 more
openaire +2 more sources
2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics
Advanced Functional Materials, Volume 36, Issue 44, 1 June 2026.2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit +5 more
wiley +1 more source
Multiport multiband coupling minimization for miniature antennas [PDF]
, 2009 The equations governing the multiport multiband antennas are analyzed in this paper with the objective of drawing the design guidelines for low coupling small antennas.
Serrano, Raquel +4 more
core +1 more source
A Scalable Perovskite Platform With Multi‐State Photoresponsivity for In‐Sensor Saliency Detection
Advanced Materials, Volume 38, Issue 32, 8 June 2026.A scalable in‐sensor computing platform (32 × 32 array) with ultra‐low variability is developed by incorporating ferroelectric copolymers into halide perovskite thin films. These devices achieve 1000 programmable photoresponsivity states and high thermal reliability.
Xuechao Xing +10 more
wiley +1 more source
IEEE Access, 2018 This paper presents a comprehensive review of mobile terminal antenna researches performed in the past seven years and the current challenges related to the user's influence on the performance of fifth generation (5G) terminal antennas.
Rizwan Khan +5 more
doaj +1 more source
Design of Multiband Fractal Antenna
International Journal of Engineering & Technology, 2018 Fractal is a fragmented geometry which can be segmented into various parts, each part will be the miniature copy of the whole. The main advantages of fractal antennas are its reduced size and multiband operation. These structures have self-similarity properties and fractional dimensions.
B S. Nageswara Rao +1 more
openaire +2 more sources
High‐Sensitivity Terahertz Gas Sensing Enabled by Undercut Metal‐Dielectric‐Metal Metamaterial
Advanced Materials Interfaces, Volume 13, Issue 12, 23 June 2026.A terahertz (THz) metamaterial gas sensor is demonstrated using a metal–dielectric–metal (MDM) absorber with an undercut dielectric layer, which enlarges the gas‐replaced volume and strengthens refractive‐index perturbation of the resonant mode. A reflection dip at 0.766 THz is observed, and acetone–nitrogen tests yield concentration‐dependent shifts ...
Naoki Inomata +2 more
wiley +1 more source