Broadband planar antenna with circular polarization for RFID readers

2013 ◽  
Author(s):  
Yuan Yao ◽  
Junsheng Yu ◽  
Xiaodong Chen
Keyword(s):  
Circular Polarization ◽  
Planar Antenna ◽  
Rfid Readers

scholarly journals A Single Feed Circularly Polarized Planar Antenna Array

2019 ◽  
Vol 9 (2) ◽  
pp. 657-661
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Communication Systems ◽  
Planar Antenna ◽  
Circularly Polarized ◽  
Quarter Wave ◽  
Feed Network ◽  
Polarization Characteristics ◽  
Structural Simplicity ◽  
Planar Antenna Array

A design of a circularly polarized planar antenna array of elliptical patches is presented. The designed prototype has been verified experimentally. Elliptical patches produce circular polarization by using a single feed only. A corporate feed network with quarter-wave transformers are used for uniform excitation of all the array elements. Primary advantages of the presented antenna array are structural simplicity, good circular polarization characteristics and no side lobes. Here, the design example is given for 2×2 elliptical patches at 2.8 GHz. Similar procedure can be extended for more number of array elements at the desired frequency of operation to cater the need of communication systems where circular polarization is essential.

scholarly journals Compact and Circular Polarized RFID Antenna for Portable Terminal Applications

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Yuan Yao ◽  
Youbo Zhang ◽  
Junsheng Yu ◽  
Xiaodong Chen
Keyword(s):  
Circular Polarization ◽  
Polarization Characteristic ◽  
Operating Band ◽  
Line Structure ◽  
Compact Dimension ◽  
Portable Terminal ◽  
Rfid Readers

A novel compact and circular polarized antenna is proposed which can be easily fabricated and embedded into RFID readers. Circular polarization characteristic of the proposed antenna is achieved by introducing a crossed branch. The modified meandering line structure gives the antenna compactness characteristic. A prototype is fabricated and measured. The results show that this circular polarized antenna with compact dimension can cover the Chinese RFID operating band from 920 MHz to 925 MHz, which make's the antenna suitable for handheld terminal application of RFID readers.

scholarly journals A Compact Low-Profile Ring Antenna With Dual Circular Polarization and Unidirectional Radiation for Use in RFID Readers

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 128948-128955 ◽  
Author(s):  
Jiade Yuan ◽  
Shiji Wu ◽  
Zhizhang Chen ◽  
Zhimeng Xu
Keyword(s):  
Circular Polarization ◽  
Low Profile ◽  
Ring Antenna ◽  
Rfid Readers

scholarly journals FRACTAL-BASED TRIANGULAR SLOT ANTENNAS WITH BROADBAND CIRCULAR POLARIZATION FOR RFID READERS

2014 ◽  
Vol 51 ◽  
pp. 121-129
Author(s):  
Jianjun Wu ◽  
Xueshi Ren ◽  
Zhaoxing Li ◽  
Ying-Zeng Yin
Keyword(s):  
Circular Polarization ◽  
Slot Antennas ◽  
Rfid Readers

scholarly journals A compact miniature fractal planar antenna for RFID readers

2019 ◽  
Vol 15 (1) ◽  
pp. 300 ◽  
Author(s):  
Mohamed Ihamji ◽  
Elhassane Abdelmounim ◽  
Jamal Zbitou ◽  
Hamid Bennis ◽  
Mohamed Latrach
Keyword(s):  
Dielectric Constant ◽  
Radiation Pattern ◽  
Input Impedance ◽  
Microstrip Antenna ◽  
Planar Antenna ◽  
Rfid Reader ◽  
Reader System ◽  
Rfid Readers

<p>This article presents a new miniature microstrip antenna in the ISM "Industrial Scientific and Medical" band, at 2.45 GHz. This microstrip antenna is designed for RFID reader system, by exploiting the fractal technique and the CPW fed; this antenna is printed on FR4 substrate with dielectric constant of 4.4. The validated antenna has a good matching input impedance range from 2.27 GHz to 2.68 GHz with a stable radiation pattern, a gain of 2.2 dBi, and a directivity of 1.91 dB. The total area of the final circuit is 21.22 x 32.05 mm2. A prototype of the proposed antenna has been fabricated and measured.</p>

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