Zobrazeno 1 - 10
of 84
pro vyhledávání: '"John A. Roumeliotis"'
Autor:
Konstantinos Katsinos, Grigorios P. Zouros, Georgios D. Kolezas, Gerasimos K. Pagiatakis, John A. Roumeliotis
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 15, Iss 10, Pp 1206-1217 (2021)
Abstract Asymptotic closed‐form expressions for calculating complex transverse electric (TE)/transverse magnetic (TM) whispering gallery mode (WGM) frequencies in homogeneous gyroelectric circular cylindrical resonators of infinite length are deriv
Externí odkaz:
https://doaj.org/article/d6655a35c69b400ba7ab824ace2ee1c7
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 69:2949-2959
A coupled-field volume integral equation (CFVIE) method is developed for the calculation of the normalized cutoff wavenumbers of circular metallic walled waveguides having concentric continuously varying highly inhomogeneous gyrotropic (i.e., gyroele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d46e083b00585be84e09293e902a730
https://doi.org/10.1109/tmtt.2021.3067920
https://doi.org/10.1109/tmtt.2021.3067920
Autor:
John A. Roumeliotis, Gerasimos Pagiatakis, Konstantinos Katsinos, Grigorios P. Zouros, Georgios D. Kolezas
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 15, Iss 10, Pp 1206-1217 (2021)
Asymptotic closed‐form expressions for calculating complex transverse electric (TE)/transverse magnetic (TM) whispering gallery mode (WGM) frequencies in homogeneous gyroelectric circular cylindrical resonators of infinite length are derived. In ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c1aae52135b86aec25d1ad6f201ab30
https://doi.org/10.1049/mia2.12131
https://doi.org/10.1049/mia2.12131
Publikováno v:
IEEE Transactions on Antennas and Propagation. 69:2256-2266
A coupled-field volume integral equation (CFVIE) method for electromagnetic (EM) scattering on electrically large, highly inhomogeneous gyrotropic circular cylinders, under normal incidence, is developed in this work. The CFVIEs are solved by the cyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6da2de2a59eb2c151c9358541031891
https://doi.org/10.1109/tap.2020.3026860
https://doi.org/10.1109/tap.2020.3026860
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 27:1-12
We introduce the concept of all-anisotropic spheroidal photonic antennas, where the nanoantenna is formed by a uniaxial anisotropic crystal, and study their modeling and optimization. For this purpose, we develop, for the first time, a rigorous theor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a861c3a2baa61acae356c0a5bd140be
https://doi.org/10.1109/jstqe.2020.3001650
https://doi.org/10.1109/jstqe.2020.3001650
Publikováno v:
2020 IEEE XXVth International Seminar/Workshop Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED).
In this work we calculate the cutoff wavenumbers of circular waveguides consisting of a metallic wall and loaded with an inhomogeneous anisotropic medium. The anisotropic material is characterized by a uniaxial or gyroelectric type permittivity, whil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9099d324fa04dd06664b8253a53964d1
https://doi.org/10.1109/diped49797.2020.9273360
https://doi.org/10.1109/diped49797.2020.9273360
Publikováno v:
2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science.
In this work we report on the eigenfrequencies of magnetooptic cavities, their non-degeneration, and their sensitivity, when the cavity deviates from the traditional spherical shape and deforms, due to manufacturing defects, into a prolate spheroid.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85891ccdb17bfdd3256b3584a54a42cc
https://doi.org/10.23919/ursigass49373.2020.9232232
https://doi.org/10.23919/ursigass49373.2020.9232232
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
In this work we report a volume integral equation formulation for the electromagnetic scattering by highly inhomogeneous anisotropic circular cylinders under normal incidence. The development of the method is based on a vectorized formalism which exp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffc0bea367d36c6f73fa2f1038458506
https://doi.org/10.23919/eucap48036.2020.9135342
https://doi.org/10.23919/eucap48036.2020.9135342
Publikováno v:
2019 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS).
In this work we develop a technique for nanoscale modeling of uniaxially anisotropic prolate spheroidal nanoantennas. To this end, we develop a formal series solution, valid for any aspect ratio of the spheroidal nanoantenna. To solve the problem, we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c42ed983446dbf973e9a1f12f31f2bb
https://doi.org/10.1109/comcas44984.2019.8958107
https://doi.org/10.1109/comcas44984.2019.8958107
Publikováno v:
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA).
In this work we study the electromagnetic scattering by a magnetized cold plasma body, using a surface integral equation (SIE) formulation. To solve the problem, we express the fields inside the anisotropic region using appropriate discrete eigenvalu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a531db3c80e8570be7c77388984f45a5
https://doi.org/10.1109/iceaa.2019.8879315
https://doi.org/10.1109/iceaa.2019.8879315