Results 31 to 40 of about 159 (128)

Broadband Printed Antenna for Radiofrequency Energy Harvesting [PDF]

, 2012
In this work a broadband UHF antenna with high inductive input impedance for radiofrequency energy harvesting is presented. It consists of a small feeding loop and a biconical radiating dipole.
L. Larcher, A. Bertacchini, E. Pinotti, D. Grossi, VINCETTI, Luca, A. Tacchini, MAINI, Moreno, L. Vincetti, LARCHER, Luca, BERTACCHINI, Alessandro, S. Scorcioni, M. Maini   +11 more
core   +1 more source

Experiment on Direction of Arrival Estimation of Atmospheric Spark Discharge Plasma Using Combined Time‐Domain Antenna

International Journal of Antennas and Propagation, Volume 2020, Issue 1, 2020., 2020
Apart from interfering in the communication system of an aircraft, electromagnetic pulses (EMPs) radiated from spark discharge plasma, which is generated during high‐speed flight, can also be utilized in passive detection. In order to validate this idea, an experiment on direction of arrival (DOA) estimation of a spark discharge plasma target using its
Jiangzehui Yan, Luping Xu, Weihao Tie, Dan Jiang, Mauro Parise   +4 more
wiley   +1 more source

Electromagnetic analysis of the radiated field by Gas Insulated Switchgears for fault detection [PDF]

, 2012
In this work a broadband UHF antenna with high inductive input impedance for radiofrequency energy harvesting is presented. It consists of a small feeding loop and a biconical radiating dipole.
SANDROLINI, LEONARDO, D. Grossi, S. Serra, M. Fattori, A. Tacchini, VINCETTI, Luca, L. Sandrolini, MAINI, Moreno, L. Vincetti, M. Maini   +9 more
core   +1 more source

Modelling and simulation in electromagnetic compatibility [PDF]

, 2023
This work presents compact electromagnetic sensors usable for electromagnetic compatibility (EMC) measurements. Currently, the utilized standardized 3D antennas are relatively large in size and, in some cases, not very suitable in terms of their ...
Almtrod, Abdalghfor Abdalghfar A.
core  

Post‐Shaping Over‐Impregnation: A Facile Strategy for Pt‐KL Catalysts With Ultrahigh Metal Dispersion and Enhanced Aromatization Performance

Carbon and Hydrogen, Volume 28, Issue 2, Page 196-208, June 2026.
A scalable post‐shaping strategy achieves precise Pt localization within KL zeolite, where optimized spatial distribution minimizes diffusion barriers to deliver superior n‐hexane aromatization activity, selectivity, and stability. ABSTRACT The precise localization of metal clusters within zeolite frameworks is critical for the aromatization catalysis.
Jianjian Yang, Qijia Chen, Ziyi Qiu, Qiang Liu, Yongping Liu, Wenlin Li   +5 more
wiley   +1 more source

Comparison of log-periodic, dual-stacked log-periodic, and horn antenna on the field uniformity and power efficiency from 80 MHz to 1 GHz [PDF]

, 2017
A Comparison of 4 different types of antennas, - a biconical (dipole like-type) antenna, a single log periodic dipole antenna (LPDA), a dual-stacked log periodic antenna (dual-stacked LPDA, HL043E) and Extended-Double Ridge Guide (Ext-DRG) Horn antenna ...
Moonen, Niek; id_orcid, Leferink, Frank; id_orcid, Mandaris, Dwi, Niek Moonan, Moonen, Niek, Schuurmans, Jaap, Dwi Mandaris, Jaap Schuurmans, Leferink, Frank, Frank Leferink   +9 more
core   +1 more source

Deep learning method for predicting electromagnetic emission spectrum of aerospace equipment

IET Science, Measurement &Technology, Volume 18, Issue 4, Page 193-201, June 2024.
Aiming at the typical and unpredictable spike signals in the electromagnetic compatibility test spectrum, a data decomposition method is adopted to extract such signals on the basis of a certain threshold and reconstruct them into a data sequence. After data decomposition, two data sequences are formed, and a long short‐term memory network is used for ...
Yuting Zhang
wiley   +1 more source

Near-field to far-field transformation applied to UHF antennas over lossy ground [PDF]

, 2019
International audienceThis paper deals with a near-field to far-field transformation able to predict the radiation of UHF antennas located over a lossy ground.
Hélier, Marc, Bourey, Nicolas, Chatelon, Yves, Darces, Muriel   +3 more
core   +1 more source

Compact Archimedean spiral antenna with high gain for electrostatic discharge detection

IET Microwaves, Antennas &Propagation, Volume 18, Issue 3, Page 147-154, March 2024.
A compact Archimedean spiral antenna with high gain for electrostatic discharge (ESD) detection is investigated. A frustum‐shaped cavity (FSC) proposed in this work is formed to optimise the maximum antenna gain. The verified results indicate that the proposed antenna with compact size is preferred to be utilised for ESD detection.
Tong Wang, Dongwei Chen, Mingjie Li, Weidong Liu, Qingyuan Fang   +4 more
wiley   +1 more source

ACOUSTIC WAVES AND THEIR EFFECTS ON ANTENNA IMPEDANCE [PDF]

, 1967
Expressions have been derived for the terminal admittance of a biconical dipole encased in a dielectric sphere which is immersed in a warm plasma. A linearized hydrodynamic description is used for the plasma.
R. Mittra, J. Carlin
core   +1 more source