Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Kamil Staszek"'
Publikováno v:
IEEE Access, Vol 12, Pp 93841-93847 (2024)
A novel concept of impedance-transforming transdirectional coupled-line directional couplers that feature maximum available impedance transformation ratio is proposed. It is shown that such couplers can be designed as an appropriate connection of two
Externí odkaz:
https://doaj.org/article/ce31777a15d0469f94d6cd1c2ef33a1f
Publikováno v:
IEEE Access, Vol 11, Pp 129425-129435 (2023)
In this paper we present a broadband monolithic balanced amplifier reaching 30 dBm output power over a range from 5.7 GHz up to 35.1 GHz. To the best of our knowledge, such broad operational bandwidth has never been reported in literature for balance
Externí odkaz:
https://doaj.org/article/e71ecfbaec0c4e70bf4789c72641d774
Autor:
Kamil Staszek
Publikováno v:
IEEE Access, Vol 10, Pp 89072-89082 (2022)
This paper presents the first six-port reflectometer, which is insensitive to power detectors’ impedance mismatch. It exhibits optimum measurement conditions and provides low measurement error regardless the reflection coefficient of the used power
Externí odkaz:
https://doaj.org/article/33521b71bed442a2a50cab3d848275aa
Publikováno v:
IEEE Access, Vol 9, Pp 31513-31524 (2021)
A microwave sensor realized in monolithic technology, intended for permittivity estimation with the use of a highly sensitive coupled-line section, is presented in this paper. It also contains a dedicated measurement circuitry realized as a five-port
Externí odkaz:
https://doaj.org/article/f13bce818c824daa824671e90c83773d
Autor:
Kinga Gawel, Magda Kalawska, Kamil Staszek, Robert Smolarz, Slawomir Gruszczynski, Krzysztof Wincza
Publikováno v:
IEEE Access, Vol 9, Pp 117434-117443 (2021)
A new concept of broadband equal-split coupled-line directional couplers is proposed. The proposed couplers are based on coupled-line sections, all having the same coupling coefficient, and feature frequency characteristics similar to the ones obtain
Externí odkaz:
https://doaj.org/article/6cbba0edc031428dbfa466f94bc09d6c
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 64, Iss No 1 (2018)
Externí odkaz:
https://doaj.org/article/d06707856a5c42aca5ffe633c54539a5
Publikováno v:
Micromachines, Vol 10, Iss 9, p 574 (2019)
In this paper, the UV illumination effect for microwave gas sensors based on the tin dioxide was verified. A UV LED with emission wavelength close to the absorption edge of the SnO2 gas-sensing layer was selected as the UV source. The developed gas s
Externí odkaz:
https://doaj.org/article/90e4949f44954ef88e0dceda436a7f89
Publikováno v:
Materials, Vol 12, Iss 6, p 877 (2019)
Metal oxide thin films such as copper oxide, titanium dioxide, and tin dioxide deposited by magnetron sputtering technology were verified as a gas-sensitive layer in microwave-based gas sensors operated at 2.4 GHz. The developed gas sensors were test
Externí odkaz:
https://doaj.org/article/19a36a06afc443389ec0da4822d42fc0
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 2 (2012)
The paper presents a compact broadband rat-race coupler for the first time designed and realized in a mul- tilayer microstrip technology. To achieve both broad operational bandwidth and a compact size the 270◦ transmission line of a conventional ra
Externí odkaz:
https://doaj.org/article/921ed8ac0a8e401895d97baf9240c2a4
Autor:
Jacek Majcher, Marcin Kafarski, Agnieszka Szypłowska, Andrzej Wilczek, Arkadiusz Lewandowski, Wojciech Skierucha, Kamil Staszek
Publikováno v:
Measurement. 214:112787