Results 21 to 30 of about 1,614 (200)

Design of Compact Broadband Omni directional Canonical Sleeve Antenna covering 500-3600 MHz

open access: yesAdvanced Electromagnetics, 2018
A novel compact broadband Canonical Sleeve Antenna (CSA) covering 500-3600 MHz with omni directional characteristics is presented in this paper. A new method is employed in which the radiating antenna structure is designed as combination of three ...
C. S. Ram, D. Vakula, M. Chakravarthy
doaj   +1 more source

Test protocol for radiated emissions in medical electrical equipment: case study of telemedicine equipment

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2013
This protocol was carried out with the purpose of having a methodology for the certification of electromagnetic compatibility of medical electrical equipment, in relation to radiated emissions, in accordance with the provisions of the IEC 60601-1-2 and ...
Antonio José Salazar Gómez   +1 more
doaj   +1 more source

Microwave Compact Biconical Antenna with Low Diffraction Lobes for UAV Control Systems with Protection from Jamming

open access: yesAdvanced Electromagnetics
Results of theoretical investigation, numerical simulation, constructive development and experimental measurements of new compact biconical antenna for UAVs are presented in this article. Peculiarity of designed antenna consists in low diffraction lobes
Stepan Piltyay, Mykhailo Omelianenko
doaj   +1 more source

Status of the design of a Wide Band beam Current Monitor (WBCM) for EUROTeV [PDF]

open access: yes, 2006
In the framework of EUROTeV, the conceptual design of a new wide band wall current monitor is being carried out. The design is based on the wall current monitors presently installed in CTF3. The new design aims to increase the bandwidth up to 20 GHz. The
Caspers, Friedhelm   +6 more
core   +1 more source

Radiation‐Resistant Kr‐Selective MOF With Record Kr/Xe Selectivity at Elevated Pressure

open access: yesAdvanced Science, EarlyView.
ABSTRACT The separation of Kr/Xe from spent nuclear fuel off‐gas is critical, yet most current adsorbents exhibit Xe‐Kr co‐adsorption under elevated pressures, posing challenges for industrial pressure swing adsorption processes. Herein, we present and evaluate a metal‐organic framework, CALF‐20M‐w, engineered for molecular sieving separation of Kr/Xe ...
Qihang Tian   +6 more
wiley   +1 more source

Analysis of Simulated and Measured Indoor Channels for mm-Wave Beamforming Applications

open access: yesInternational Journal of Antennas and Propagation, 2018
Ray tracing- (RT-) assisted beamforming, where beams are directly steered to dominant paths tracked by ray tracing simulations, is a promising beamforming strategy, since it avoids the time-consuming exhaustive beam searching adopted in conventional beam
Anders Karstensen   +4 more
doaj   +1 more source

Spectrum occupancy measurements and lessons learned in the context of cognitive radio [PDF]

open access: yes, 2015
Various measurement campaigns have shown that numerous spectrum bands are vacant even though licenses have been issued by the regulatory agencies. Dynamic spectrum access (DSA) based on Cognitive Radio (CR) has been regarded as a prospective solution to ...
Ammar, M.   +4 more
core   +2 more sources

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

open access: yesCarbon and Hydrogen, EarlyView.
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   +5 more
wiley   +1 more source

Omnidirectional microwave spacecraft antenna Patent [PDF]

open access: yes, 1968
Microwave ominidirectional antenna for use on ...
Croswell, W. F., Gilreath, M. C.
core   +1 more source

Diagnostic Potential of Free-Space Radiometric Partial Discharge Measurements [PDF]

open access: yes, 2017
The work reported in this paper addresses the calibration of four types of partial discharge (PD) emulator required for the development of a PD Wireless Sensor Network (WSN).
Atkinson, R.   +9 more
core   +1 more source

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