Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Krzysztof Derzakowski"'
Autor:
Krzysztof Derzakowski
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 70, Iss No 3, Pp 683-690 (2024)
The method of evaluating the resonant frequencies of multilayered resonator containing uniaxial anisotropic dielectrics is presented. The detailed solution of Maxwell's equations for such a structure by means of the radial modes matching method for T
Externí odkaz:
https://doaj.org/article/da5d378e71584f85a11a839352104de0
Autor:
Krzysztof Derzakowski
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 70, Iss No 1, Pp 247-252 (2024)
The method of evaluating the resonant frequencies of multilayered resonator containing demagnetized ferrites is presented. The detailed solution of Maxwell's equations for such a structure by means of the radial modes matching method for TE0mn modes
Externí odkaz:
https://doaj.org/article/3ac8eecf29104cdead9e50800dfea67a
Publikováno v:
IEEE Access, Vol 9, Pp 111125-111131 (2021)
A novel W-band sensor for complex permittivity measurements of rod shaped samples based on reflectometer method is described. Characterization of dielectric materials around 100 GHz is quite a challenge. The main limitation is the requirements for th
Externí odkaz:
https://doaj.org/article/0a97fac93faf4d519db81a6b896d3a7c
Autor:
Krzysztof Derzakowski
Publikováno v:
IEEE Access, Vol 9, Pp 156239-156245 (2021)
The paper presents an application of the radial mode matching method to determine the resonant frequency of cone-shaped dielectric resonators. The results of calculations with the use of the developed computer program are presented. The accuracy of t
Externí odkaz:
https://doaj.org/article/358a00e47c3c477fba2e4c6a5fd4df5a
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 1 (2002)
The new method of measuring permittivity is described. The measurements are performed using whispering gallery mode open dielectric resonators. The accuracy is assured by applications of the mode matching method. Three resonant modes (HE511, HE611 an
Externí odkaz:
https://doaj.org/article/ae97c651ba8e44bfa1d6ef101fc24e7b
Autor:
Krzysztof Derzakowski
Publikováno v:
Progress In Electromagnetics Research M. 101:101-115
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6c23fa8e499cb9f1bbfaccdeacb0a47
https://doi.org/10.2528/pierm20120804
https://doi.org/10.2528/pierm20120804
Publikováno v:
IEEE Access, Vol 9, Pp 111125-111131 (2021)
A novel W-band sensor for complex permittivity measurements of rod shaped samples based on reflectometer method is described. Characterization of dielectric materials around 100 GHz is quite a challenge. The main limitation is the requirements for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc849ceb9060c41936d4dfaca8c8fb86
https://ieeexplore.ieee.org/document/9508970/
https://ieeexplore.ieee.org/document/9508970/
Autor:
Jerzy Krupka, Bartlomiej Salski, Piotr Czekala, Krzysztof Derzakowski, Janina Mazierska, Pawel Kopyt
Publikováno v:
2021 13th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA).
The complex permittivity of a quartz sand mixed with aqueous solutions of NaCl has been measured at frequency of 2.5 GHz employing dielectric ring resonator operating on TE 01δ mode. Measurements have been taken for various concentrations of NaCl up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dee9df304f844f07104b9c2f1eed3d3b
https://doi.org/10.1109/isema49699.2021.9508327
https://doi.org/10.1109/isema49699.2021.9508327
Autor:
Denys Nyzovets, Cheol Ho Kim, Krzysztof Derzakowski, Grzegorz Bogdan, Konrad Godziszewski, Yevhen Yashchyshyn, Bonghyuk Park
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 17:225-228
This letter presents a 28 GHz switched five-beam antenna system based on a rectangular waveguide and a reconfigurable semiconductor circuit (RSC) with slots. Surface p-i-n diodes are used to close or open slots in order to achieve required configurat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd045cc9559a7f93d4e9df3b1d790f6f
https://doi.org/10.1109/lawp.2017.2781262
https://doi.org/10.1109/lawp.2017.2781262
Autor:
Cheol Ho Kim, Krzysztof Derzakowski, Yevhen Yashchyshyn, Bonghyuk Park, Konrad Godziszewski, Denys Nyzovets, Grzegorz Bogdan
Publikováno v:
2018 14th International Conference on Advanced Trends in Radioelecrtronics, Telecommunications and Computer Engineering (TCSET).
Reconfiguration of the antenna's aperture can be achieved in many ways including mechanical, electronical, optical or magnetical methods. Electrical methods are typically based on PIN diodes, however, surface PIN (S-PIN) diodes have recently attracte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d04019fdaef30b0ec9f7fe4eef3d738
https://doi.org/10.1109/tcset.2018.8336271
https://doi.org/10.1109/tcset.2018.8336271