Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ahmed Elfrgani"'
Publikováno v:
2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT).
The dispersion diagram of a uniform 20-period highly overmoded, with average diameter to 75 GHz operating wavelength ratio ≈ 8, slow-wave structure (SWS) designed to operate in E-band frequency range is numerically calculated using the SuperFish co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb88962eab926c1ca03883d58107d0d3
https://doi.org/10.1109/ucmmt53364.2021.9569896
https://doi.org/10.1109/ucmmt53364.2021.9569896
Publikováno v:
2021 IEEE International Conference on Plasma Science (ICOPS).
In general, HPM systems currently being developed use oscillators as their RF source. These systems operate at a fixed frequency and are not readily tunable. In contrast to oscillators, a broadband amplifier has the frequency agility necessary to max
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ece888efebeebbdd97492edd3bfe969
https://doi.org/10.1109/icops36761.2021.9588390
https://doi.org/10.1109/icops36761.2021.9588390
Autor:
Andrey D. Andreev, Ahmed Elfrgani, Edl Schamiloglu, Khandakar Nusrat Islam, Salvador Portillo
Publikováno v:
2021 IEEE International Conference on Plasma Science (ICOPS).
We present a novel concept for generating multibeams (multiple electron beams) with different energies from a single cathode stalk at a single potential using two nested magnetically insulated coaxial diodes (MICDs). Particle-in-cell (PIC) simulation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddb8faaca0d0b0b17fba849cc4726887
https://doi.org/10.1109/icops36761.2021.9588366
https://doi.org/10.1109/icops36761.2021.9588366
Publikováno v:
2020 IEEE International Conference on Plasma Science (ICOPS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4710ca24c3a69dd4c7214e72e433cc2
https://doi.org/10.1109/icops37625.2020.9717355
https://doi.org/10.1109/icops37625.2020.9717355
Autor:
Ahmed Elfrgani, Edl Schamiloglu
Publikováno v:
2020 IEEE International Conference on Plasma Science (ICOPS).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6887e65424afaa5e8a82beb1ee401983
https://doi.org/10.1109/icops37625.2020.9717955
https://doi.org/10.1109/icops37625.2020.9717955
Publikováno v:
IEEE Transactions on Plasma Science. 44:2268-2271
Two Cherenkov devices are effectively combined using a circular waveguide T-junction in a simulation study. The microwave sources are driven by the same high voltage pulser to prevent phase difference at the output of the power combiner. This passive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::984b5ba04752b9d1612c70e78e54daa1
https://doi.org/10.1109/tps.2016.2601015
https://doi.org/10.1109/tps.2016.2601015
Publikováno v:
IEEE Transactions on Plasma Science. 44:1280-1286
A study of the evolution of wave dispersion in systems of all-metallic periodic structures with increasing corrugation depth shows a similarity of the properties of waves in metamaterial slow-wave structures (MSWSs) and traditional metallic SWSs used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28311e08fdf53077cc0f235559e896c6
https://doi.org/10.1109/tps.2016.2535305
https://doi.org/10.1109/tps.2016.2535305
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
Generating microwaves using metamaterial (MTM) structures requires a negative index waveguide interacting with an electron beam. A double negative MTM (DNG-MTM) structure is necessary to produce propagating wave inside a standard waveguide. In previo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71deb455e92b9b7f9d87dca1421fbf53
https://doi.org/10.1109/icops35962.2018.9575523
https://doi.org/10.1109/icops35962.2018.9575523
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
In this study, novel methods utilizing metamaterial-based antennas for efficient power extraction from a metamaterial slow wave structure (MSWS) generator are investigated. This work is a follow-up from the design and testing of a MSWS for an O-type
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76430a6c87d8bc50305fc9dab7a8c931
https://doi.org/10.1109/icops35962.2018.9575325
https://doi.org/10.1109/icops35962.2018.9575325
Autor:
Edl Schamiloglu, Ahmed Elfrgani, Mikhail I. Fuks, Meiqin Liu, Chunliang Liu, Sabahattin C. Yurt
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
We designed a two-spiral metamaterial (MTM) structure which shows a wider bandwidth of double negative permittivity and permeability compared to the well-known split ring resonators [1]–[3] (SSRs) and which can tailor and control the electromagneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::348d30837819aa975ce0d6bbfa71a763
https://doi.org/10.1109/icops35962.2018.9575728
https://doi.org/10.1109/icops35962.2018.9575728