Results 41 to 50 of about 1,142 (140)

Design of a Circularly Polarized -Slot Antenna with Isotropic Pattern for the UHF RFID Reader of WSN

open access: yesInternational Journal of Distributed Sensor Networks, 2014
In an antenna for a UHF RFID reader of wireless sensor networks (WSN), receiver sensitivity in sensing multitags from remote distances is an important performance index.
Jongan Park   +4 more
doaj   +1 more source

Performance of a UHF RFID Detection System to Assess Activity Levels and Lying Behaviour in Fattening Bulls

open access: yesAgriEngineering
Animal welfare strongly influences the health and performance of cattle and is an important factor for consumer acceptance. One parameter for the quantification of health status is the lying duration, which can be deployed for the early detection of ...
Kay Fromm   +4 more
doaj   +1 more source

Experimental Study on Inkjet-Printed Passive UHF RFID Tags on Versatile Paper-Based Substrates

open access: yesInternational Journal of Antennas and Propagation, 2016
We present the possibilities and challenges of passive UHF RFID tag antennas manufactured by inkjet printing silver nanoparticle ink on versatile paper-based substrates.
Han He   +3 more
doaj   +1 more source

Unconventional UHF RFID Tags with Sensing and Computing Capabilities

open access: yesJournal of Communications Software and Systems, 2014
The design of fully-passive UHF RFID tags preserving cost-effectiveness, yet supplying augmented capabilities, represents an ambitious and stimulating challenge, as such devices would pave the way to a large class of applications where identification ...
Riccardo Colella   +3 more
doaj  

“Unconventionally Shaped” Antenna Design for UHF RFID Tags

open access: yesInternational Journal of Antennas and Propagation, 2021
UHF RFID tags need to be attached or embedded into various objects. Unlike traditional free-standing antennas, UHF antenna shapes and form factors may vary significantly.
Silong Wang, Yulong Liu, Terry Tao Ye
doaj   +1 more source

A Flexible UHF RFID Respiratory Sensor

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications
Abstract In this study, we developed a Radio Frequency Identification (RFID) sensor to monitor respiratory rates. The sensor utilizes a passive RFID tag enhanced with a metamaterial-inspired structure to boost its maximum gain value. This gain increased from -0.39 dBi to 0.57 dBi. Monitoring of the respiratory rate was conducted by analyzing variations
Jéssyca I. L. Araujo   +4 more
openaire   +2 more sources

RFID Antenna for UHF Band [PDF]

open access: yesCarpathian Journal of Electronic and Computer Engineering, 2019
Abstract This paper presents a method to increase the detection range for RFID readers in the UHF radio band. The design is following especially the ISO 18000-6C standardization demands for the UHF band, operating from 865 to 868 MHz in Europe and from 902 to 928 MHz in North America.
openaire   +1 more source

Tunable Compact UHF RFID Metal Tag Based on CPW Open Stub Feed PIFA Antenna

open access: yesInternational Journal of Antennas and Propagation, 2012
For the ultrahigh frequency radio frequency identification (UHF RFID) metal tag, it always has the difficulties of compact designing, especially for the conjugate impedance matching, low antenna gain, and fabrication or environmental detuning.
Lingfei Mo, Chunfang Qin
doaj   +1 more source

A Broadband Circularly Polarized Stacked Probe-Fed Patch Antenna for UHF RFID Applications

open access: yesInternational Journal of Antennas and Propagation, 2007
A broadband circularly polarized stacked probe-fed antenna suitable for UHF RFID applications is presented and studied. The proposed antenna is fed by two probes which are connected to a hybrid coupler.
Hang Leong Chung   +2 more
doaj   +1 more source

An ultra-high frequency radio frequency identification system for studying individual feeding and drinking behaviors of group-housed broilers

open access: yesAnimal, 2019
Radio frequency identification (RFID) technology offers a real-time solution to monitor behavioral responses of individual animals to various stimuli, which provides crucial implications on farm management and animal well-being.
G. Li   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy