Design of an embedded-feed type microstrip patch antenna for UHF radio frequency identification tag on metallic objects

2010 ◽  
Vol 4 (9) ◽  
pp. 1232 ◽  
Author(s):  
H.-G. Cho ◽  
N.R. Labadie ◽  
S.K. Sharma
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Frequency Identification

scholarly journals A Butterfly-Shaped Wideband Microstrip Patch Antenna for Wireless Communication

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Liling Sun ◽  
Maowei He ◽  
Jingtao Hu ◽  
Yunlong Zhu ◽  
Hanning Chen
Keyword(s):  
Wireless Communications ◽  
Wireless Communication ◽  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Microstrip Patch Antenna ◽  
Rfid Systems ◽  
Microstrip Patch ◽  
Frequency Identification

A novel butterfly-shaped patch antenna for wireless communication is introduced in this paper. The antenna is designed for wideband wireless communications and radio-frequency identification (RFID) systems. Two symmetrical quasi-circular arms and two symmetrical round holes are incorporated into the patch of a microstrip antenna to expand its bandwidth. The diameter and position of the circular slots are optimized to achieve a wide bandwidth. The validity of the design concept is demonstrated by means of a prototype having a bandwidth of about 40.1%. The return loss of the butterfly-shaped antenna is greater than 10 dB between 4.15 and 6.36 GHz. The antenna can serve simultaneously most of the modern wireless communication standards.

scholarly journals Method of Monitoring Cracks in a Metal Structure Based on Dual-Chip RFID Antenna Sensor

Proceedings ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 3
Author(s):  
Zhiping Liu ◽  
Hanjin Yu ◽  
Kai Zhou ◽  
Runfa Li
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Metal Structure ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Testing Method ◽  
Wireless Testing ◽  
Sensitivity Tests ◽  
Testing Performance ◽  
Frequency Identification

The microstrip patch antenna sensor is a novel sensor used for structural health monitoring which can measure a metal structure’s crack defects in a wireless manner. However, it is difficult to identify the reflected signal from the signal of an antenna sensor. The radio-frequency identification (RFID) antenna sensor, which combines RFID technology and the microstrip patch antenna sensor, can solve the measurement problems that are difficult to the conventional wireless testing technologies. In this study, a dual-chip RFID antenna sensor was designed. The influence of the wireless testing method on the monitoring results of crack defects was investigated by tests, including the wireless tests of resonant frequency and the crack sensitivity tests. The tests results revealed that the antenna sensor had good wireless testing performance with regard to the metal structure’s crack defects. Additionally, the maximum of wireless identification distance reached 1.96 m.

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.

U-Patch Antenna for RFID and Wireless Applications

2011 ◽  
Vol 324 ◽  
pp. 434-436
Author(s):  
R. Abi Saad ◽  
Zeina Melhem ◽  
Chadi Nader ◽  
Youssef Zaatar ◽  
Doumit Zaouk
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Dual Band ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Additional Layer ◽  
Quarter Wavelength ◽  
Frequency Identification

in this paper, we propose a new multi-band patch antenna structure for embedded RFID (Radio Frequency Identification) readers and wireless communications. The proposed antenna is a dual band microstrip patch antenna using U-slot geometry. The operating frequencies of the proposed antenna are chosen as 2.4 and 0.9 (GHz), obtained by optimizing the physical dimensions of the U-slot. Several parameters have been investigated using Ansoft Designer software. The antenna is fed through a quarter wavelength transformer for impedance matching. An additional layer of alumina is added above the surface of the conductors to increase the performance of the antenna.

Multi-factor product authentication using integrated Quick Response (QR) code pixelated antenna

2017 ◽  
Vol 2017 (1) ◽  
pp. 000608-000612
Author(s):  
John Doroshewitz ◽  
Amanpreet Kaur ◽  
Jeffrey Nanzer ◽  
Premjeet Chahal
Keyword(s):  
Genetic Algorithm ◽  
Radio Frequency ◽  
Design Process ◽  
Patch Antenna ◽  
Microstrip Patch Antenna ◽  
Antenna Design ◽  
Qr Code ◽  
Quick Response ◽  
Microstrip Patch

Abstract A Quick Response (QR) Code style antenna is presented. Such an antenna can provide two-level authentication, both optically through the current QR technology, plus a radio frequency (RF) signature from microstrip patch antenna designed from the QR signature using copper patterning. The antenna is designed through the pixilation of a patch antenna where conductor is present in the dark regions of the optical QR code. The QR based antenna design has a unique frequency and radiation signature and can be used for RF authentication of products. The design process for the pixilation is presented as well as fabrication and measured results of a QR code antenna design. The possibility of using a Genetic Algorithm to create a “library” of acceptable antenna results in accordance with the QR data it represents is also discussed.

scholarly journals Dual-band Dipole Antenna for 2.45 GHz and 5.8 GHz RFID Tag Application

2015 ◽  
Vol 4 (1) ◽  
pp. 31 ◽  
Author(s):  
Y. Yu ◽  
J. Ni ◽  
Z. Xu
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Input Impedance ◽  
Return Loss ◽  
Dipole Antenna ◽  
Dual Band ◽  
Radiation Characteristics ◽  
Rfid Tag ◽  
Microstrip Patch ◽  
Frequency Identification

In this paper, a dual-band dipole antenna for passive radio frequency identification (RFID) tag application at 2.45 GHz and 5.8 GHz is designed and optimized using HFSS 13. The proposed antenna is composed of a bent microstrip patch and a coupled rectangular microstrip patch. The optimal results of this antenna are obtained by sweeping antenna parameters. Its return losses reach to -18.7732 dB and -18.2514 dB at 2.45 GHz and 5.8 GHz, respectively. The bandwidths (Return loss <=-10 dB) are 2.42~2.50 GHz and 5.77~5.82 GHz. And the relative bandwidths are 3.3% and 0.9%. It shows good impedance, gain, and radiation characteristics for both bands of interest. Besides, the input impedance of the proposed antenna may be tuned flexibly to conjugate-match to that of the IC chip.

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