Results 1 to 10 of about 77,663 (265)
Физика волновых процессов и радиотехнические системы, 2022 The paper studies the features and consequences of the use of Norton conversions in the process of broadband and narrowband matching of circuit impedances based on filter theory in cases with different transformation ratios.
Aleksander V. Baranov
doaj +1 more source
Phase frequency characteristics evaluation for E-class devices output circuits
Физика волновых процессов и радиотехнические системы, 2022 Based on the unitarity of the E-class device circuit [S]-matrix, the phase frequency characteristics are estimated for the output circuit at any harmonic of the fundamental frequency.
Alexander V. Baranov
doaj +1 more source
Some Hints to Develop Particular Line Pipe Specification [PDF]
MATEC Web of Conferences, 2019 When procuring the carbon steel line pipe for pipeline project, frequently the purchaser refers to the international standards/specifications such as API SPEC 5L without any particular requirements.
Fandika Ardian
doaj +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2021 Introduction. There are incidences of jamming the users of satellite communication systems, who apply e.g. geostationary relay satellites, and the illegal use of such satellite resources.
R. D. Gall
doaj +1 more source
Физика волновых процессов и радиотехнические системы, 2020 The article is devoted to features of the development two types of broadband frequency mixers with image channel suppression in the frequency range 927 GHz.
Grigoriy A. Uglov, Yulia V. Belova
doaj +1 more source
Journal of Physical Fitness and Sports Medicine, 2023 The present study investigated the effects of wearing a non-woven face mask and performing a calculation task, while walking, on gait pattern, breathlessness, and calculation performance.
Kazushige Oshita +2 more
doaj +1 more source
Antenna array with switching scanning in elevation plane
Физика волновых процессов и радиотехнические системы, 2021 It is known that the most reliable communication in hard-to-reach places such as the Arctic, Tundra, Taiga is satellite communication [1-5]. Therefore, for satellite communications, it is necessary to develop your own antenna arrays.
Yuri G. Pasternak +2 more
doaj +1 more source
Accuracy of Positioning of Ground Sources Using Geostationary Repeaters
Известия высших учебных заведений России: Радиоэлектроника, 2020 Introduction. Currently, there is a significant increase in the number of relay satellites in geostationary orbit. However, frequent incidents of illegal use of the satellites frequency resource, as well as unintentional and deliberate interference with ...
R. D. Gall
doaj +1 more source
PERFORMANCE INVESTIGATION FOR NANOCARBON MODIFIED DISPENSER CATHODE
Известия высших учебных заведений России: Радиоэлектроника, 2018 The article provides characteristics of dispenser cathodes with admixture of nanocarbon particles, i.e. sulfoadduct of carbon nanoclusters (Ugleron®), into active material and polyhedral multilayer carbon nanostructures of the fulleroid type and ...
T. M. Krachkovskaya +3 more
doaj +1 more source
Variabilidad de la carga según la especificidad de las tareas. Análisis en fútbol sala formativo
Apunts: Educación Física y Deportes, 2023 Con el objetivo de determinar si la especificidad de las tareas técnico-tácticas de los entrenamientos afecta a la carga externa (CE) expuesta por los jugadores, se registraron datos de 11 jugadores de entre 15 y 16 años (15.55 ± 0.52) de un equipo ...
José Luis Muñoz-Gracia, Toni Caparrós
doaj +1 more source