Results 61 to 70 of about 4,242 (161)

A Review of Isolation Techniques for 5G MIMO Antennas

open access: yesJournal of Telecommunications and Information Technology
This paper offers an analysis of mutual coupling reduction techniques used in MIMO antennas designed for sub-6 GHz, 28 GHz, and 28/38 GHz dual frequency bands which are allocated to 5G technology.
Parminder Kaur   +2 more
doaj   +1 more source

Mutual Coupling Reduction Using Ground Stub and EBG in a Compact Wideband MIMO-Antenna

open access: yesIEEE Access, 2021
This paper presents a compact, uni-planer wide band Multiple-Input-Multiple-Output (MIMO) antenna. The designed antenna array has a compact size of (26mm x 31mm) covering a wide frequency band from 3.1GHz - 11GHz.
Awais Khan   +3 more
doaj   +1 more source

Pseudo-LIDAR data analysis and feed-forward wind turbine control design [PDF]

open access: yes, 2015
To investigate potential improvement in wind turbine control employing LIDAR measurement, pseudo-LIDAR wind speed data is produced with Bladed using a designed sampling strategy, and assessed with preliminary frequency-domain analysis.
Bao, Jie   +3 more
core   +1 more source

High‐Performance Quad‐Port MIMO Antenna for Next‐Generation Mm‐Wave IoT Application With Efficiency Prediction Using Supervised Regression Methods

open access: yesEngineering Reports, Volume 7, Issue 10, October 2025.
A novel MIMO antenna for 5G applications is proposed, achieving a wide bandwidth of 4.12 GHz, high gain of 8.8 dB, and an efficiency of 99.72%. The antenna's performance is validated through CST simulation, measurement, RLC circuit modeling, and machine learning‐based prediction, with Nonparametric Regression showing superior accuracy.
Md. Ashraful Haque   +8 more
wiley   +1 more source

Isolation Enhancement in Quad Port MIMO Antenna Using PBG Substrate in THz Region [PDF]

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, the design of a 4 element MIMO antenna system for Terahertz (THz) communication applications is reported. The proposed antenna system is engineered with a focus on enhancing isolation between closely spaced antenna elements.
Amalraj Taksala Devapriya   +1 more
doaj   +1 more source

AstroGeoFit. A Genetic Algorithm and Bayesian Approach for the Astronomical Calibration of the Geological Timescale

open access: yesPaleoceanography and Paleoclimatology, Volume 40, Issue 8, August 2025.
Abstract Variations in Earth's orbit and axial tilt induce climatic changes which are recorded in sedimentary deposits. The frequencies of these cyclical variations are integer combinations of the main secular frequencies of the solar system. Analyzing these cycles in sedimentary records can help establish an astronomical time scale for the geological ...
N. Hoang   +7 more
wiley   +1 more source

Compact MIMO Antenna for Multiband Mobile Applications

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
This paper presents a multiple input multiple output (MIMO) antenna for multiband operation based on meander lines with L shaped metallic strip. Meander lines is basically a monopole antenna loaded with multiple sections of short circuited transmission ...
Tanvi Agrawal, Shweta Srivastava
doaj   +1 more source

Space shuttle wing leading edge heating environment prediction derived from development flight data [PDF]

open access: yes, 1983
An analytical program is in progress at Rockwell International to revise wing leading edge heating predictions in order to improve correlation with STS-1 to -5 flight radiometer data.
Cunningham, J. A., Haney, J. W., Jr.
core   +1 more source

N-Photon wave packets interacting with an arbitrary quantum system

open access: yes, 2012
We present a theoretical framework that describes a wave packet of light prepared in a state of definite photon number interacting with an arbitrary quantum system (e.g. a quantum harmonic oscillator or a multi-level atom).
A. Barchielli   +16 more
core   +1 more source

A two-element antenna array for compact portable MIMO-UWB communication systems

open access: yesAIMS Electronics and Electrical Engineering, 2019
In this paper, a compact multiple input multiple output (MIMO) antenna with the size of 44 mm × 27 mm × 0.8 mm is designed for operation in ultra-wideband (UWB) frequency range, i.e., from 3.1 GHz to 10.6 GHz.
Deval V. Jansari, Reza K. Amineh
doaj   +1 more source

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