Results 91 to 100 of about 11,336 (176)

Bandwidth extension of planar antennas using embedded slits for reliable multiband RF communications [PDF]

open access: yes
In this paper a technique is described to extend the impedance bandwidth of patch antennas without compromising their size. This is accomplished by embedding capacitive slits in the rectangular patch with a truncated ground-plane, and exciting the ...
Alibakhshikenari, Mohammad   +4 more
core   +1 more source

Conformal and Flexible Antennas in Ultra-High Frequencies: Prospects and Challenges for Partial Discharge Diagnostics

open access: yesIEEE Access
With the exponential increase in smart device usage across various domains, flexible and conformal antenna technologies have emerged as transformative solutions, enabling wireless systems in numerous smart applications.
M. A. Taher   +8 more
doaj   +1 more source

Broadband Compact Quasi Yagi Antenna for UHF Wireless Communication Systems with Enhanced Performance at UHF ISM Bands [PDF]

open access: yesRadioengineering, 2020
In this study, a broadband planar quasi Yagi antenna operated at ultra-high frequency (UHF) band is presented. The performance of the antenna is particularly improved for two popular UHF frequencies of 433 and 868 MHz used in several wireless ...
Y. Bakirli, A. Selek, M. Secmen
doaj  

A Novel Approach for a Low-Cost Deployable Antenna [PDF]

open access: yes
The Naval Research Laboratory (NRL) has designed, built, and fully qualified a low cost, low Passive Intermodulation (PIM) 12-foot (3.66-m) diameter deployable ultra high frequency (UHF) antenna for the Tacsat-4 program.
Amend, Chris   +4 more
core   +1 more source

The wireless energy transfer (WET) using ultra high frequency (UHF) for human body implant recharging

open access: yesE3S Web of Conferences, 2018
The wireless energy transfer (wet) is widely used in many fields. In particularly for medical, this technique can be implemented to an electronic human body implant recharging.
Rinanda Saputri Fahmy   +3 more
doaj   +1 more source

Identification of surgical instruments using UHF-RFID technology

open access: yesCurrent Directions in Biomedical Engineering, 2015
The paper presents research, development and advantage of Radio Frequency IDentification (RFID) technology based system for medical instrument management and safe usage. The system is developed for two scenarios.
Bourouah Mohamed   +5 more
doaj   +1 more source

CPW-Fed Wideband Circular Polarized Antenna for UHF RFID Applications

open access: yesInternational Journal of Antennas and Propagation, 2017
We propose a wide bandwidth antenna with a circular polarization for universal Ultra High Frequency (UHF) radio-frequency identification (RFID) reader applications.
Sun-Woong Kim   +2 more
doaj   +1 more source

Time domain analysis of switching transient fields in high voltage substations [PDF]

open access: yes, 2009
Switching operations of circuit breakers and disconnect switches generate transient currents propagating along the substation busbars. At the moment of switching, the busbars temporarily acts as antennae radiating transient electromagnetic fields within ...
Judd, M.D., Musa, B.U., Siew, W.H.
core  

Critical Management Issues for Implementing RFID in Supply Chain Management [PDF]

open access: yes, 2010
The benefits of radio frequency identification (RFID) technology in the supply chain are fairly compelling. It has the potential to revolutionise the efficiency, accuracy and security of the supply chain with significant impact on overall profitability ...
Srivastava, Bharatendu
core   +1 more source

Design of a Microstrip Series Power Divider for Sequentially Rotated Nonuniform Antenna Array

open access: yesInternational Journal of Antennas and Propagation, 2017
This paper deals with the design of a microstrip series power divider for circularly polarized sequential rotational antenna array. The theoretical description of the design is firstly proposed, comprising the cases of nonuniform weighted antenna arrays.
Daniele Inserra, Wei Hu, Guangjun Wen
doaj   +1 more source

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