Results 11 to 20 of about 915 (151)

Transparent Liquid Multiple-Antenna Array with a High Gain and Beam Diversity for UHD TV Applications [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
The design of television (TV) antennas for commercial use that operate on the ultra-high frequency (UHF) band has become more challenging given the relatively large size of these antennas and considering that they typically do not conform to ...
Duy Tung Phan, Chang Won Jung
doaj   +1 more source

Wideband UHF Antenna for Partial Discharge Detection

open access: yesApplied Sciences, 2020
This paper presents a ultra-high frequency (UHF) antenna for partial discharge (PD) detection and the antenna sensor can be used near a conducting ground wire.
Zhen Cui   +3 more
doaj   +1 more source

Comparative Analysis of Partial Discharge Detection Features Using a UHF Antenna and Conventional HFCT Sensor

open access: yesIEEE Access, 2022
This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used for partial discharge (PD) detection on high voltage and medium voltage power system equipment.
Jean Pierre Uwiringiyimana   +3 more
doaj   +1 more source

Design of Bowtie Antenna With Rounded Edge and Middle-Sliced Modifications for UHF Partial Discharge Sensor

open access: yesIEEE Access, 2023
Partial Discharge (PD) detection using ultra-high frequency (UHF) method has been proven as more noise-resistant in GIS condition monitoring, compared to the conventional PD detection methods, where the common noise frequency range such as in the power ...
Umar Khayam   +2 more
doaj   +1 more source

A Single-Feeding Port HF-UHF Dual-Band RFID Tag Antenna [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2017
In this paper, a dual-band high frequency (HF) and ultra-high frequency (UHF) radio-frequency identification (RFID) tag antenna is presented that operates in the 13.56 MHz band as well as in the 920 MHz band.
Nam Ha-Van, Chulhun Seo
doaj   +1 more source

Experimental Study on the Compatibility of PD Flexible UHF Antenna Sensor Substrate with SF6/N2

open access: yesMicromachines, 2023
The use of flexible, built-in, ultra-high-frequency (UHF) antenna sensors is an effective method to solve the weak high-frequency electromagnetic wave signal sensing of partial discharge (PD) inside gas-insulated switchgears (GISs), and the compatibility
Xukun Hu   +3 more
doaj   +1 more source

Antena Mikrostrip Linear Array dengan Slot U untuk Internal Pesawat Televisi pada Band Frekuensi UHF

open access: yesJurnal Nasional Teknik Elektro, 2018
Television (TV) can be considered as the most popular information media. TV at Ultra High Frequency (UHF) normally has larger size of antenna than the TV terminal itself, and is usually connected as external equipment so that they are not suitable for ...
Aditya Wardhani, Ikhwana Elfitri
doaj   +1 more source

First In Vivo 23Na Human Imaging at 10.5 T Using a Combined Sodium-Proton Transceiver Body Array. [PDF]

open access: yesMagn Reson Med
ABSTRACT Purpose To demonstrate the first in vivo human 23Na MRI at 10.5 T using a novel dual‐tuned transceiver body array and to evaluate a self‐gating approach for respiratory motion compensation, focusing on renal imaging. Methods A custom‐built eight‐channel 23Na‐loop 1H‐dipole transceiver array was designed, constructed, and characterized.
Schmidt S, Ertürk AM, Metzger GJ.
europepmc   +2 more sources

Bendable ultra‐high frequency radio‐frequency identification tag antenna for retail garments using nonuniform meandered lines

open access: yesEngineering Reports, 2021
A bendable ultra‐high frequency (UHF) radio‐frequency identification (RFID) tag antenna using nonuniform meandered lines for retail garments in the textile industry is presented.
Manoj Kumar   +2 more
doaj   +1 more source

Design of a compact ultra-high frequency antenna for partial discharge detection in oil immersed power transformers

open access: yesAin Shams Engineering Journal, 2022
Oil-immersed Power transformers are considered to be one of the most essential parts of the electrical system and partial discharges (PD) are one of the dangerous problems that face transformer insulation.
Walid S. Salah   +4 more
doaj   +1 more source

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