Results 121 to 130 of about 915 (151)
IEEE Transactions on Antennas and Propagation, 2007 We propose a new printed dipole antenna for ultra high frequency (UHF) radio frequency identification (RFID) systems in North America. The antenna consists of a microstrip-to-coplanar stripline transition, a meandered driven dipole, a closely-coupled parasitic element, and a folded finite-size ground plane.
Hua, R.-C., Ma, T.-G.
exaly +5 more sources
IEEE Transactions on Antennas and Propagation, 2013 In this communication, we propose a printed log-periodic dipole array (LPDA) antenna covering the universal ultra-high-frequency (UHF) radio frequency identification (RFID) band of operation. Koch-shaped dipoles together with closely-coupled parasitic elements as directors were utilized for compactness in size and improvement in front-to-back ratio (F ...
Heng-Tung Hsu, Ting-Jui Huang
exaly +4 more sources
A dual-band vehicular planar inverted-F antenna for ultra high frequency (UHF) applications
Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367), 2003 A small dual-band R-shaped planar inverted-F antenna (PIFA) is introduced for vehicular application. Utilizing this unique geometry dual-frequency operation is achieved with a single feed. The proposed antenna operates in the 237-240 MHz and the 450-500 MHz bands with bandwidths of 15% and 4.3% respectively within VSWR of 2:1.
T. Sittironnarit, M. Ali
openaire +2 more sources
Compact ultra high frequency (UHF) slotted array antenna
2014 IEEE 2nd International Symposium on Telecommunication Technologies (ISTT), 2014 This paper proposed a compact UHF slotted array antenna by utilizing slots to minimize the size of the antenna. The design presented used a substrate with a very high permittivity, which resulted in an antenna with practical dimension and thus a compact structure.
N. A. Rahman, M. F. Jamlos
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2016 IEEE Region 10 Conference (TENCON), 2016 In this paper, the state-of-art zero-phase-shift line (ZPSL) loop antennas are reviewed and discussed. The current flowing along a ZPSL is with little phase lag, so that the ZPSL has been widely utilized to design electrically large loop antennas for ultra-high frequency (UHF) near-field radio frequency identification (RFID) applications.
Xianming Qing +3 more
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2012 IEEE International Conference on Wireless Information Technology and Systems (ICWITS), 2012 We have successfully demonstrated a novel design of compact and low-profile circularly-polarized antenna for UHF RFID reader applications. The proposed antenna features very good impedance bandwidth from 845 MHz to 964 MHz and a very good AR bandwidth from 860 MHz to 935 MHz. A peak gain of 7.8 dBic was also achieved.
Ting-Jui Huang +2 more
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The Design of Ultra-High Frequency (UHF) Radio Frequency Identification (RFID) Reader Antenna
, 2017 This paper presents the design of ultra-high frequency (UHF) radio frequency identification (RFID) reader antenna using low dielectric constant of microwave substrate. An RFID reader antenna emits electromagnetic signals to the microchip in the tag, and the microchip will be energized by modulating the wave and returns to the reader antenna.
Hoon, Weefwen +5 more
openaire +3 more sources
, 2014 Abstract : A broadband high-gain bi-layer log-periodic dipole array (LPDA) is introduced for conformal load bearing antenna structures (CLAS) applications. Under the proposed scheme the two layers of the LPDA are printed on two separate thin dielectric substrates which are substantially separated from each other.
James Tuss +5 more
openaire +2 more sources
Optically Transparent Ultra-High Frequency (UHF) RFID Tag Antennas
2024 9th International Conference on Smart and Sustainable Technologies (SpliTech)Aakash Bansal, William G. Whittow
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