Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Whip antenna"'
Autor:
Jae-Young Chung, Geown Yih
Publikováno v:
Applied Sciences, Vol 12, Iss 18, p 8973 (2022)
A traditional whip antenna is suitable for terrestrial wireless communication due to its omnidirectional radiation pattern which is capable of transmitting and receiving signals from all directions. However, the length of a whip antenna is long for t
Externí odkaz:
https://doaj.org/article/36624f55fba84e63ab9f0be9761c2ae4
Autor:
D. V. Belenko
Publikováno v:
Известия высших учебных заведений России: Радиоэлектроника, Vol 0, Iss 5, Pp 36-41 (2017)
The article deals with a low pass op-amp model with high gain at DC and a single-pole frequency response and presents a technique for simple analysis of negative inductance compensator (NIC) circuits. Analytical expressions are derived fo r NIC frequ
Externí odkaz:
https://doaj.org/article/b2bc703d935e484698025d3722560704
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 15, Iss 1, Pp 21-27 (2017)
The direct contact of a tree or a branch of tree with Covered Conductors (CC) overhead lines causes Partial Discharges (PD) inside the insulation. The presence of PD degrades the insulation systems and eventually destroys insulation, which may lead t
Externí odkaz:
https://doaj.org/article/43df743250504def8f33d40af684c767
Publikováno v:
Proceedings of Telecommunication Universities. 7:81-92
When designing the antenna field of a stationary HF transmitting radiocenter, it is necessary to provide for reserving ground-based symmetrical antennas operating on round-the-clock radio directions with backup, fast-deployable antenna systems. As su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df33640ebd691b1647c4ef740171da69
https://doi.org/10.31854/1813-324x-2021-7-1-81-92
https://doi.org/10.31854/1813-324x-2021-7-1-81-92
Akademický článek
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Autor:
Hengfeng Wang, Chao Liu
Publikováno v:
International Journal of Microwave and Wireless Technologies. 13:454-462
In this paper, the antenna reconfigurable technology is used to redesign a whip antenna in different sub-bands of high frequency (HF). According to the electrical characteristics of the antenna, on the one hand, two different radiation whip heights a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8179a5515473454db44956f6bb905449
https://doi.org/10.1017/s1759078720001117
https://doi.org/10.1017/s1759078720001117
Publikováno v:
IET Microwaves, Antennas & Propagation. 14:1446-1454
In this study, a new type of horizontal radiation blade structure is proposed and applied to the very high frequency (VHF) broadband whip antenna. The influence of the radius, length, number of branches of horizontal radiation blade and its distribut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a048e7d4c88a1b2ae6906cb5bd4e430
https://doi.org/10.1049/iet-map.2019.0867
https://doi.org/10.1049/iet-map.2019.0867
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 69:2570-2580
Manhole cover monitoring devices are urgently needed in underground pipe network construction. Because the monitoring device is installed under the manhole cover, three key problems, how to measure the tilt angle or state of manhole cover, transmit d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67380990848d82c0fcd75b353d8317bd
https://doi.org/10.1109/tim.2020.2967854
https://doi.org/10.1109/tim.2020.2967854
Publikováno v:
Progress In Electromagnetics Research C. 99:209-219
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::090fa11be04fa407dceff92b433f14c6
https://doi.org/10.2528/pierc19101701
https://doi.org/10.2528/pierc19101701
Akademický článek
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