Results 1 to 10 of about 617,901 (335)

Broadband Faraday Isolator [PDF]

open access: yesJournal of the Optical Society of America A, 2012
Driving on an analogy with the technique of composite pulses in quantum physics, we propose a broadband Faraday rotator and thus a broadband optical isolator, which is composed of sequences of ordinary Faraday rotators and achromatic quarter-wave plates ...
Andon A. Rangelov   +40 more
core   +3 more sources

Hollow CoS/C Structures for High-Performance Li, Na, K Ion Batteries

open access: yesFrontiers in Chemistry, 2022
Alkali ion (Li, Na, and K) batteries as a new generation of energy storage devices are widely applied in portable electronic devices and large-scale energy storage equipment.
Yan Liu   +14 more
doaj   +1 more source

Implementation of Magnetoelectric Dipoles in Metasurfaces for 5G Applications

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
The well-known magnetoelectric dipole (ME-dipole) has huge adoption in antenna designs. In this paper, we manage to implement ME-dipoles in metasurfaces.
Xuexuan Ruan, Kai Wang, Qinyu Zhang
doaj   +1 more source

Preliminary evaluation of polarimetric parameters from a new dual-polarization C-band weather radar in an alpine region [PDF]

open access: yesAdvances in Geosciences, 2010
The first operational weather radar with dual polarization capabilities was recently installed in Austria. The use of polarimetric radar variables rises several expectations: an increased accuracy of the rain rate estimation compared to standard Z-R ...
H. Paulitsch, F. Teschl, W. L. Randeu
doaj   +1 more source

Mitigation of PA Nonlinearity for IEEE 802.11ah Power-Efficient Uplink via Iterative Subcarrier Regularization

open access: yesIEEE Access, 2021
An orthogonal frequency division multiplexing (OFDM) transmitter for 802.11ah uplink may consume unnecessarily high power due to the malicious effect of a large peak-to-average power ratio (PAPR).
Li Cho   +3 more
doaj   +1 more source

Microwave scattering from ice crystals: how much parameters can differ from equal volume spheres [PDF]

open access: yesAdvances in Geosciences, 2010
The scattering properties of ice crystals at centimeter and millimeter wavelengths are fundamental for their measurement with radars or radiometers as well as for many other applications in remote sensing.
F. Teschl, W. L. Randeu, R. Teschl
doaj   +1 more source

Supporting Heterogenous Traffic on Top of Point-to-Multipoint Light-Trees

open access: yesSensors, 2023
New 5 G and beyond services demand innovative solutions in optical transport to increase efficiency and flexibility and reduce capital (CAPEX) and operational (OPEX) expenditures to support heterogeneous and dynamic traffic.
Masab Iqbal   +6 more
doaj   +1 more source

Power minimization for GSIC-based uplink cell-free massive MIMO-NOMA systems

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
Non-orthogonal multiple access (NOMA) and multiple-input multiple-output (MIMO) are considered promising techniques to satisfy the demands for high spectrum efficiency and massive connectivity in future wireless communication.
Tao Cui   +3 more
doaj   +1 more source

Broadband exterior cloaking

open access: yesOptics Express, 2009
6 pages, 5 figures, submitted to Optics Express. For associated movies see http://www.math.utah.edu/~fguevara/brd/
Vasquez, Fernando Guevara   +2 more
openaire   +3 more sources

Survey: Using Augmented Reality to Improve Learning Motivation in Cultural Heritage Studies

open access: yesApplied Sciences, 2020
Cultural Heritage (CH) refers to the representation of historical places and traditional customs of a specific city or country. Its principal aim is to transmit to future generations how their ancestors lived, and what their customs and buildings were ...
Juan Camilo González Vargas   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy