Compact shorted C‐shaped patch antenna for ultrahigh frequency radio frequency identification tags mounted on a metallic plate

2021 ◽  
Author(s):  
Minh‐Tan Nguyen ◽  
Yi‐Fang Lin ◽  
Chun‐Hsien Chang ◽  
Chien‐Hung Chen ◽  
Hua‐Ming Chen
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Ultrahigh Frequency ◽  
Metallic Plate ◽  
Frequency Identification ◽  
Identification Tags

scholarly journals Compact Dual-Band Circularly Polarized Stacked Patch Antenna for Microwave-Radio-Frequency Identification Multiple-Input-Multiple-Output Application

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Enze Zhang ◽  
Andrea Michel ◽  
Paolo Nepa ◽  
Jinghui Qiu
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Multiple Input Multiple Output ◽  
Dual Band ◽  
Circularly Polarized ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Frequency Identification ◽  
Stacked Patch Antenna

A compact, low-profile, two-port dual-band circularly polarized (CP) stacked patch antenna for radio-frequency identification (RFID) multiple-input-multiple-output (MIMO) readers is proposed, which employs the shared-aperture technique. The proposed antenna adopts a 1.524 mm thickness Rogers Ro4350b substrate with relative permittivity of 3.48. Two pairs of isolated ports are working at two microwave- (MW-) RFID bands (2.4–2.485 GHz and 5.725–5.875 GHz) with high port isolation of 25 dB and 30 dB, respectively. A shared metal slot layer is designed to separate two feeding structures of the lower band and upper band for port isolation enhancement as well as saving space. Corner-truncated square slot and patch configurations have been designed to obtain CP modes. In the lower and upper MW-RFID bands, the relative impedance bandwidths are 12.2% and 5.7%, and the maximum realized gains are higher than 7.3 dBic. Moreover, two-element configurations have been combined for an RFID MIMO system that occupies a dimension of 119 mm × 119 mm × 12.9 mm. The MIMO antenna performance of envelope correlation coefficient (ECC) is lower than 0.03, and diversity gain is close to 10 dB.

Crane operation using hand-motion and radio frequency identification tags

2009 ◽  
Author(s):  
Kelvin Chen Chih Peng ◽  
William Singhose ◽  
Semir Gessesse ◽  
David Frakes
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Hand Motion ◽  
Frequency Identification ◽  
Identification Tags

Reliability evaluation of wearable radio frequency identification tags: Design and fabrication of a two-part textile antenna

2018 ◽  
Vol 89 (4) ◽  
pp. 560-571 ◽  
Author(s):  
Xiaochen Chen ◽  
Leena Ukkonen ◽  
Johanna Virkki
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Integrated Circuit ◽  
High Performance ◽  
Cyclic Strain ◽  
Moist Environment ◽  
Frequency Identification ◽  
Identification Tags ◽  
Cost Efficient ◽  
The One

Passive radio frequency identification-based technology is a convincing approach to the achievement of versatile energy- and cost-efficient wireless platforms for future wearable applications. By using two-part antenna structures, the antenna-electronics interconnections can remain non-stressed, which can significantly improve the reliability of the textile-embedded wireless components. In this article, we describe fabrication of two-part stretchable and non-stretchable passive ultra-high frequency radio frequency identification textile tags using electro-textile and embroidered antennas, and test their reliability when immersed as well as under cyclic strain. The results are compared to tags with traditional one-part dipole antennas fabricated from electro-textiles and by embroidery. Based on the results achieved, the initial read ranges of the two-part antenna tags, around 5 m, were only slightly shorter than those of the one-part antenna tags. In addition, the tag with two-part antennas can maintain high performance in a moist environment and during continuous stretching, unlike the one-part antenna tag where the antenna-integrated circuit attachment is under stress.

scholarly journals Wireless Breast Localization Using Radio-frequency Identification Tags: The First Reported European Experience in Breast Cancer

In Vivo ◽  
2019 ◽  
Vol 34 (1) ◽  
pp. 233-238 ◽  
Author(s):  
UMAR WAZIR ◽  
SALIM TAYEH ◽  
NICHOLAS PERRY ◽  
MICHAEL MICHELL ◽  
ANMOL MALHOTRA ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Radio Frequency ◽  
Radio Frequency Identification ◽  
European Experience ◽  
Frequency Identification ◽  
Identification Tags

Design and Evaluation of Planar Bifilar Helical Antennas for Radio Frequency Identification Tags

2019 ◽  
Vol 18 (12) ◽  
pp. 2642-2646
Author(s):  
Weikang Chen ◽  
Zhenyi Niu ◽  
Mengyuan Li ◽  
Zhuo Li ◽  
Qian Xu ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Frequency Identification ◽  
Identification Tags ◽  
Helical Antennas

Buried ordnance detection: electromagnetic modeling of munition-mounted radio frequency identification tags

2006 ◽  
Vol 42 (7) ◽  
pp. 1883-1891 ◽  
Author(s):  
R.J. Davis ◽  
K.A. Shubert ◽  
T.J. Barnum ◽  
B.D. Balaban
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Electromagnetic Modeling ◽  
Frequency Identification ◽  
Identification Tags

Passive active radio frequency identification tags

2006 ◽  
Vol 1 (1) ◽  
pp. 52 ◽  
Author(s):  
Alex K. Jones ◽  
Swapna Dontharaju ◽  
Shenchih Tung ◽  
Peter J. Hawrylak ◽  
Leonid Mats ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Frequency Identification ◽  
Identification Tags
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