Autor: Więckowski, T.W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimal site and antenna location for UMTS - output results of 3G network simulation software
Autorzy:: Nawrocki, M.J.
Więckowski, T.W.
Powiązania:: https://bibliotekanauki.pl/articles/309253.pdf
Data publikacji:: 2003
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: anteny
UMTS
3G
CDMA
antenna tilt
site location
Opis:: The paper presents output results of 3G network simulation software in the area of optimal site location as well as finding optimal values of antenna tilt. The loss of capacity is shown for a wide range of tilts and different antenna directions. Nonuniform distribution of base stations has been also included in the simulation scenarios influencing system performance. All of the described parameters are especially significant to CDMA systems network planning.
Źródło:: Journal of Telecommunications and Information Technology; 2003, 1; 55-58
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Gyrotron Technology
Autorzy:: Hruszowiec, M.
Czarczyński, W.
Pliński, E. F.
Więckowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/308592.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: beam gun
gyrotron
interaction of electrons with fast wave
microwaves
Opis:: The article presents a microwave vacuum tube called gyrotron. Its applications, construction and principle of operation are briefly described. It is also discussed the issue of an appropriate electron beam generation and formation.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 1; 68-76
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: The Microwave Sources for EPR Spectroscopy
Autorzy:: Hruszowiec, M.
Nowak, K.
Szlachetko, B.
Grzelczak, M.
Czarczyński, W.
Pliński, E. F.
Więckowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/308886.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electron paramagnetic resonance
gyrotron EPR
microwave sources
orotron
terahertz waves
Opis:: Rapid development of many scientific and technical disciplines, especially in material science and material engineering increases a demand for quick, accurate and cheap techniques of materials investigations. The EPR spectroscopy meets these requirements and it is used in many fields of science including biology, chemistry and physics. For proper work, the EPR spectrometer needs a microwave source, which are reviewed in this paper. Vacuum tubes as well as semiconductor generators are presented such as magnetron, klystron, traveling wave tube, backward wave oscillator, orotron, gyrotron, Gunn and IMPATT diodes. In this paper main advantages of gyrotron usage, such as stability and an increased spectral resolution in application to EPR spectroscopy is discussed. The most promising and reliable microwave source is suggested.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 2; 18-25
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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