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Advanced Materials Technologies, EarlyView.Anodic aluminum oxide (AAO) membranes have traditionally served as structural supports in osmotic energy systems. Here, blind‐hole AAO membranes are demonstrated as active ion‐selective platforms with tunable nanopore structures. By balancing membrane resistance, ion selectivity, and flux, enhanced performance is achieved, delivering a maximum power ...
Khanh Nhien Vu +6 more
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Advanced Materials Technologies, EarlyView.Left: Illustration of the glass & nanostructures system and the NIR emission at 1.5 µm, where the colored spheres represent the Er3+ ions within the doped glass. Right: Representation of the Stark splitting of the 4I13/2 and 4I15/2 manifolds of the Er3+, illustrating how the plasmonic modes facilitate the emission from the broader Stark manifold ...
Gaston Lozano Calderón +5 more
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Spiral antennas and antenna arrays
2005 IEEE Antennas and Propagation Society International Symposium, 2005The planar square-Archimedean spiral located at the center of a dipole has been demonstrated as a valuable passive antenna element in the upper MM-wave and THz regions between about 100 GHz and 2 THz (Bjarnason, E. et al., Appl. Phys. Lett., vol.85, p.3983, 2004).
R.M. Bilotta, E.B. Brown
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Antenna design for a conformal antenna array demonstrator
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012Antenna arrays on aircrafts have several advantages if they will be integrated into the skin of the aircraft. However, conformal and structure integrated antennas are subject to aeordynamical loads which will cause vibrations and deformations of the antenna elements.
Loecker, Claudius +3 more
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A Circular Fractal Antenna Array
2019 National Conference on Communications (NCC), 2019In this paper, different arrays of the circular fractal antenna are analyzed. The various array design configurations are 1 $\times 2,1\times 4,2\times 2$ and $2\times 4$ . The substrate used is FR4 whose dimension is varied according to the array configurations.
Rahul Chauhan, Sanjeev Gupta
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Plasmonic nanoloop array antenna
Optics Letters, 2010In this Letter, we create an optical nanoantenna array composed of parasitic plasmonic loops that can enhance radiation characteristics and direct the optical energy successfully. Three metallic loops inspired by the concept of the Yagi-Uda antenna are optimized around the region where they feature high scattering performance to control the radiation ...
Akram, Ahmadi, Hossein, Mosallaei
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Transient performance of array antennas
Proceedings of the IEEE, 1963The transient performance of a uniformly excited, equal-spaced linear dipole array is evaluated under the assumption of constant radiated power over a finite frequency band. This approach permits the implicit evaluation of the effects of mutual coupling between array elements on transient performance.
J. DiFranco, W. Rubin
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Local Calibration of Antenna Arrays
2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018We consider a local calibration method which does not assume any specific model for the mismatch between the true and assumed array manifolds. The method is based on updating an initial array manifold locally, in the neighborhood of directions in which signals have been observed.
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On the Polarization Sensitivity of Antenna Arrays
2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018The manifold of an array with identical antennas is generally assumed to be insensitive to the polarization of the impinging signal. We show that the manifold of such arrays is generally sensitive to signal polarization and that ignoring this may degrade the performance of direction-of-arrival estimation algorithms, especially for closely spaced ...
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