Results 31 to 40 of about 13,252 (205)
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
doaj +1 more source
A telemetry antenna system for unmanned air vehicles [PDF]
, 2010 This paper presents a low VSWR high gain telemetry antenna system manufactured for UAVs that provides 360± coverage in the roll plane of the UAV. Proposed telemetry antenna system includes four telemetry antennas, one power divider that has one input and
Dogan, Mustafa +3 more
core
The rigorous analysis of strongly coupled step discontinuities in microstrip [PDF]
, 1987 A rigorous analysis of boxed microstrip single-step discontinuities and cascades of strongly coupled discontinuities is presented. Use is made of a variational formulation involving the expansion of the transverse E field at the step in terms of suitable
Railton, CJ, Rozzi, T
core +3 more sources
High‐Efficiency Millimeter‐Wave Scalable Rectenna Array With Individual Impedance Control
International Journal of Circuit Theory and Applications, Volume 53, Issue 11, Page 6143-6151, November 2025.This study proposes a millimeter‐wave scalable rectenna array with individual fundamental and second harmonic impedance control for high‐efficiency wireless power transfer. The array integrates rectifiers, patch antennas, and a DC combining network, ensuring effective impedance matching and optimal power conversion while maintaining independent control
Yeonsoo Kim +5 more
wiley +1 more source
PENGARUH BAHAN DIELEKTRIK DALAM UNJUK KERJA WAVEGUIDE
JIF (Jurnal Ilmu Fisika), 2012 Makalah ini menyajikan hasil studi pengukuran nilai Voltage Standing Wave Ratio (VSWR) dan power reflection factor (PRF) untuk berbagai jenis bahan dielektrik yang akan disisipkan pada saluran transmisi yang beroperasi di frekuensi 9 GH dan dibandingkan ...
Lince Markis
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Radio Science, Volume 60, Issue 11, November 2025.Abstract This research focuses on developing an efficient, high‐isolation Multi‐Input Multi‐Output (MIMO) antenna array for Mobile Satellite Services (MSS). A portion of the S‐band (2–4 GHz) ranging from 2 to 2.2 GHz, known as Unified S‐Band (USB), is utilized for MSS, particularly for Space‐to‐Earth communications.
Avishek Chakraborty +6 more
wiley +1 more source
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
Antenna Behaviour in the Presence of Human Body [PDF]
, 2004 Mobile phones are widely used nowadays. The demand in the new generations of mobile phones is better performance. Typically the mobile phone performance is derived assuming an ideal antenna impedance of 50Ω.
Annema, Anne-Johan +2 more
core +1 more source
Solar Radio Wide‐Band Spectroscopy and Imaging Facilities of the Chinese Meridian Project Phase II
Space Weather, Volume 23, Issue 11, November 2025.Abstract Solar eruptions, including flares and coronal mass ejections, are the most energetic phenomena in the solar system. These explosive events accelerate high‐energy particles and generate electromagnetic radiation from radio to gamma‐ray wavelengths, producing heliospheric disturbances and acting as primary drivers of space weather hazards.
Yihua Yan +19 more
wiley +1 more source
Desain dan Implementasi Rectenna Hexagonal Patch Array Pada Frekuensi 2,4 GHz
Jurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2018 Abstrak– Penelitian rectenna yang dilakukan terdiri atas dua bagian yaitu antena yang berbentuk hexagonal array dan rectifier. Rectenna hexagonal array ini didesain agar bisa menangkap gelombang radio (RF) pada frekuensi 2,4 GHz yang dapat ...
Herma Nugroho rono adi Kusumo +2 more
doaj +1 more source