Results 1 to 10 of about 876 (115)

A Broadband Ultra High Frequency (UHF) Fat-Dipole Antenna for Digital TV Applications [PDF]

Applied Sciences
A broadband and compact planar UHF antenna is presented for use in MIMO Digital TV indoor applications. The choice of the element and its physical implementation is oriented towards a low-profile, low-cost, and single-layer deployment.
Marcelo B. Perotoni, Marcos S. Vieira, Giovane G. B. dos Santos   +2 more
doaj   +3 more sources

A Ultra High Frequency (UHF) RFID Antenna Design for Food Quality and Safety

International Journal of Recent Technology and Engineering (IJRTE), 2020
In this proposed review paper an antenna design for Ultra High Frequency Radio Frequency Identification (RFID) is presented. We discuss various applications of RFID antenna: meat freshness monitoring application, RFID card, RFID bracelets, in food containers for catering business and methods to measure dielectric properties on agri food materials ...
Vijayalakshmi. J*, Dinesh. V, Sivsankgari. P.A, Saranya. S, Sanju Shree. V   +4 more
openaire   +2 more sources

Radio Frequency Identification (RFID) Tag Antenna Design at Ultra High Frequency (UHF) Band

Indian Journal of Science and Technology, 2017
This project is to design a Radio Frequency Identification (RFID) high sensitivity tag antenna which operates at UHF frequency band in Malaysia between 919 MHz to 923 MHz. RFID is a type of wireless and radio wave technology that allows for a small RFID chip to be embedded in certain physical object and uniquely identified by an RFID reader.
Wee Fwen Hoon, Yew Been Seok, Mohamed Fareq Abdul Malek, Lee Yeng Seng, Siti Zuraidah Ibrahim   +4 more
openaire   +3 more sources

PD Koch Complementary Fractal UHF Antenna Based on AMC Metasurface [PDF]

Sensors
To meet the high-sensitivity requirement of ultra-high-frequency (UHF) sensors for electromagnetic waves radiated by partial discharge (PD) in power equipment of substations, this paper proposes a Koch complementary fractal UHF antenna based on the ...
Haonan Zhang, Dapeng Han, Minghan Ke, Lihao Luo, Zhenhao Huang, Guozhi Zhang   +5 more
doaj   +2 more sources

Partial Discharge Characterization of HFO(E) Gas Using Ultra-High Frequency (UHF) Antenna for Medium Voltage Switchgear Application

IEEE Access
The most frequent and dangerous hazard to the electrical insulation of high voltage (HV) and high field (HF) equipment is partial discharges (PD). The development of PD activity is both a cause and an indicator of insulation degradation, which could ultimately lead to insulation breakdown. For electrical power equipment to operate safely and dependably,
Rizwan Ahmed, Rahisham ABD-Rahman, Zahid Ullah, Rahmat Ullah, Mohd Fairouz Mohd Yousof, Kaleem Ullah   +5 more
openaire   +3 more sources

Simulation Study on Anti-Interference Performance Degradation of GIS UHF Sensors Based on Substation White Noise Reconstruction [PDF]

Sensors
The ultra-high frequency (UHF)-based partial discharge (PD) detection technology for gas-insulated switchgear (GIS) has achieved large-scale applications due to its high sensitivity and real-time monitoring capabilities.
Lujia Wang, Yongze Yang, Zixi Zhu, Haitao Yang, Jie Wu, Xingwang Wu, Yiming Xie   +6 more
doaj   +2 more sources

A UHF/UWB Monopole Antenna Design Process Integrated in an RFID Reader Board [PDF]

Journal of Electromagnetic Engineering and Science, 2022
This paper presents a new circular monopole antenna with triple-band characteristics that can operate in both ultra-high frequency (UHF) and ultra-wideband (UWB) and can be integrated into a radio-frequency identification (RFID) system reader board.
Kawther Mekki, Omrane Necibi, Saoussen Lakhdhar, Ali Gharsallah   +3 more
doaj   +1 more source

UHF-Printed Monopole Filtenna for Partial Discharge Detection with LTE Signal Suppression [PDF]

Journal of Electromagnetic Engineering and Science, 2023
External partial discharge (PD) sensors for the ultra-high frequency (UHF) method are widely used to detect the PD signals in high-voltage power equipment for ease of installation and maintenance. However, conventional external PD sensors detect not only
Junmo Choi, Seungyong Park, Jisu Lee, Kyung-Young Jung   +3 more
doaj   +1 more source

A Circular Sector-Shaped Dipole Antenna with Meandered Arms and Added Ferrite-Loaded Artificial Magnetic Conductor

Applied Sciences, 2022
A circular sector-shaped dipole antenna with meandered arms based on an artificial magnetic conductor (AMC) is proposed in this study. A compact unit cell of the AMC operating within 19–485 MHz is designed using a ferrite material, which exhibits high ...
Dong Hwan Lee, Oh Heon Kwon, Won Bin Park, Keum Cheol Hwang   +3 more
doaj   +1 more source

Optimization design and development of UHF omnidirectional wideband antenna for PD detection in substation [PDF]

E3S Web of Conferences, 2021
In order to meet the requirements of partial discharge (PD) detection of electrical equipment in substation station area, the ultra-high frequency (UHF) antenna with broadband, high gain and horizontal plane (H-plane) omnidirectional is studied and ...
Xing Zhen-hua, Wang Zhen, Xu Hang, Xu Miao, Mou Xiao-lin, Wu Lu-xiao, Yang Kun, Liu Zhao   +7 more
doaj   +1 more source