Results 21 to 30 of about 13,537 (225)
Quad-band internal mobile phone antenna [PDF]
, 2007 A novel internal, quad-band antenna placed inside a ‘foldable’ type of Mobile Phone is presented. Its structure consists of a helical and a monopole element exciting two broad frequency bands.
Langley, R.J., Tzortzakakis, M.
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Pencapaian Lebar-Pita Antena Mikrostrip dengan Tingkap Tergandeng untuk Frekuensi 2,4 GHz
Jurnal Nasional Teknik Elektro dan Teknologi Informasi, 2017 Aperture coupled technique is designed to increase microstrip antenna bandwidth. This paper discusses bandwidth enhancement of the aperture coupled rectangular patch microstrip antenna for working on 2.4 GHz. The optimal design is determined by using the
Ali Hanafiah Rambe +2 more
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UTHM water quality classification based on sub index [PDF]
, 2020 River or stream at their source is unpolluted, but as water flow downstream, the river or lake is receiving point and non-point pollutant source. Ammoniacal nitrogen (NH3- N) and suspended solids (SS) strongly influences the dynamics of the dissolved ...
Johari, A. H. +2 more
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International Journal of Electronics and Communications System, 2022 Multi-substrate antenna material is a combination of more than one primary antenna base material where this substrate material can determine the quality of antenna performance.
Budi Herdiana
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VSWR Adjustment for ACS Cavity in J-PARC Linac
Journal of Physics: Conference Series, 2019 Abstract In the Japan Proton Accelerator Research Complex (J-PARC) linac, negative hydrogen beams are accelerated from 190 MeV to 400 MeV by Annular-ring Coupled Structure (ACS) cavities. The RF input coupler of the ACS21 cavity, which is the twenty-first (the last) accelerating cavity in the order of beam acceleration, had a ...
Tamura, Jun +5 more
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Rancang Bangun Antena Horn Planar Frekuensi 1 – 3 GHz untuk Ground Penetrating Radar
Jurnal ElkomikaABSTRAK Antena horn planar merupakan antena yang menggunakan salah satu sisi antena horn berbentuk piramida dan beroperasi pada frekuensi diatas 1000 MHz.
LUCIA JAMBOLA +2 more
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Microstrip antenna design for use in 4G communication network systems
Teknika4G service coverage only reaches 52.90% of the total area in Indonesia, with an average internet speed of 11.12 Mbps which is one of the lowest internet speeds in Southeast Asia.
M. Reza Ramadhon +2 more
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Dual-band Sierpinski fractal monopole antenna [PDF]
, 2000 A new top-loaded reduced-sized dual-band (1.9 GHz and 3.5 GHz) monopole antenna for wireless communications is presented. The antenna provides better than -15 dB input return loss and keeps the same radiation pattern over both bands.
Romeu Robert, Jordi
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Gain improvement of the Yagi-Uda Antenna Using Genetic Algorithm for Application in DVB-T2 Television Signal Reception in Tanzania [PDF]
Journal of Interdisciplinary Sciences, 2017 Region 2 UHF Frequency band is the frequency range which is used for transmitting Television signals in East Africa. Yagi-uda antenna is an array Antenna designed for various applications, in this paper a 5-element yagi-uda antenna is designed and ...
Twahir Kazema, Kisangiri Michael
doaj
Energies, 2017 In order to improve the fault monitoring performance of grounding electrode lines in ultra-high voltage DC (UHVDC) transmission systems, a novel fault monitoring approach based on the high-frequency voltage standing-wave ratio (VSWR) is proposed in this ...
Yufei Teng +6 more
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