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Page 1
The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review.
Kelechi AH, Alsharif MH, Oluwole DA, Achimugu P, Ubadike O, Nebhen J, Aaron-Anthony A, Uthansakul P. Kelechi AH, et al. Sensors (Basel). 2021 Aug 23;21(16):5662. doi: 10.3390/s21165662. Sensors (Basel). 2021. PMID: 34451102 Free PMC article. Review.
Although UAV antenna tracking is domiciled in the mechanical beam steering arrangement, this study shows that this native technology could be usurped by MIMO beam forming....
Although UAV antenna tracking is domiciled in the mechanical beam steering arrangement, this study shows that this native technology …
Circular Optical Phased Array with Large Steering Range and High Resolution.
Benedikovič D, Liu Q, Sánchez-Postigo A, Atieh A, Smy T, Cheben P, Ye WN. Benedikovič D, et al. Sensors (Basel). 2022 Aug 16;22(16):6135. doi: 10.3390/s22166135. Sensors (Basel). 2022. PMID: 36015897 Free PMC article.
Herein, we report a design of two-dimensional optical phased arrays, which are arranged in a grid of concentric rings. We numerically investigate two designs composed of 110 and 820 elements, respectively. ...
Herein, we report a design of two-dimensional optical phased arrays, which are arranged in a grid of concentric rings. We numerically …
Laboratory x-ray fluorescence tomography for high-resolution nanoparticle bio-imaging.
Hertz HM, Larsson JC, Lundström U, Larsson DH, Vogt C. Hertz HM, et al. Opt Lett. 2014 May 1;39(9):2790-3. doi: 10.1364/OL.39.002790. Opt Lett. 2014. PMID: 24784104
The method relies on the combination of the 24 keV line-emission from a high-brightness liquid-metal-jet x-ray source, pencil-beam-forming x-ray optics, photon-counting energy-dispersive detection, and carefully matched (Mo) nanoparticles. Phantom experiments and si …
The method relies on the combination of the 24 keV line-emission from a high-brightness liquid-metal-jet x-ray source, pencil-beam- …
Optically Remote Control of Miniaturized 3D Reconfigurable CRLH Printed Self-Powered MIMO Antenna Array for 5G Applications.
Al-Khaylani HH, Elwi TA, Ibrahim AA. Al-Khaylani HH, et al. Micromachines (Basel). 2022 Nov 24;13(12):2061. doi: 10.3390/mi13122061. Micromachines (Basel). 2022. PMID: 36557360 Free PMC article.
The proposed MIMO array is constructed from four antenna elements arranged on a cubical structure to provide a low mutual coupling, below -20 dB, over all frequency bands of interest. ...It is realized that the proposed array realizes a significant beam forming …
The proposed MIMO array is constructed from four antenna elements arranged on a cubical structure to provide a low mutual coupling, b …
Dir-MUSIC Algorithm for DOA Estimation of Partial Discharge Based on Signal Strength Represented by Antenna Gain Array Manifold.
Xu W, Chen B, Li Y, Hu Y, Li J, Zeng Z. Xu W, et al. Sensors (Basel). 2022 Jul 20;22(14):5406. doi: 10.3390/s22145406. Sensors (Basel). 2022. PMID: 35891086 Free PMC article.
Inspection robots are widely used in the field of smart grid monitoring in substations, and partial discharge (PD) is an important sign of the insulation state of equipment. PD direction of arrival (DOA) algorithms using conventional beam forming and time difference …
Inspection robots are widely used in the field of smart grid monitoring in substations, and partial discharge (PD) is an important sign of t …
Grid-based femtosecond laser electronic excitation tagging for single-ended 2D velocimetry at kilohertz rates.
Fisher JM, Meyer TR, Slipchenko MN. Fisher JM, et al. Appl Opt. 2021 Dec 1;60(34):10714-10720. doi: 10.1364/AO.432803. Appl Opt. 2021. PMID: 35200937
A novel, to the best of our knowledge, optical arrangement is evaluated for performing single-shot femtosecond laser electronic excitation tagging in a 16-point grid (Grid-FLEET) with single-ended optical access. ...Analysis of the optical element with respect to beam …
A novel, to the best of our knowledge, optical arrangement is evaluated for performing single-shot femtosecond laser electronic excit …
Quasi-continuous linear phase-gradient metamaterial based on conformal spoof surface plasmon polaritons.
Zhai Y, Wang J, Liu T, Jia Y, Zhu R, Fu X, Li Y, Pang Y, Qu S. Zhai Y, et al. Opt Express. 2021 Mar 15;29(6):8666-8675. doi: 10.1364/OE.417325. Opt Express. 2021. PMID: 33820309 Free article.
To this end, a SSPP structure with high transmission is firstly designed as the unit cell of the metamaterial. To obtain the phase gradient, SSPP structures are arranged delicately in a way that they are conformal to the brachistochrone curve. ...This work provides another …
To this end, a SSPP structure with high transmission is firstly designed as the unit cell of the metamaterial. To obtain the phase gradient, …
Performance of an underwater acoustic volume array using time-reversal focusing.
Root JA, Rogers PH. Root JA, et al. J Acoust Soc Am. 2002 Nov;112(5 Pt 1):1869-78. doi: 10.1121/1.1509073. J Acoust Soc Am. 2002. PMID: 12430799
Time reversal permits acoustic focusing and beam forming in inhomogeneous and/or high-scattering environments. ...The experiments evaluate the focusing performance of a 27-element volume array when different scattering structures are present within the volume of the …
Time reversal permits acoustic focusing and beam forming in inhomogeneous and/or high-scattering environments. ...The experime …