A Novel UHF RFID Reader Antenna

2010 ◽  
Vol 40-41 ◽  
pp. 384-387
Author(s):  
Xin Zhang ◽  
Lei Li
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Simple Structure ◽  
Ground Plane ◽  
Uhf Rfid ◽  
Radiation Characteristics ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna ◽  
Simulation Results

In this paper, a new ultrahigh frequency circularly polarized microstrip antenna using in RFID reader is proposed. The proposed antenna has a simple structure, it has non-symmetrical rectangular corner truncated square patch, ground plane and a probe feed. To achieve good circular polarization(CP) radiation characteristics, it uses air as the dielectric layer. Simulation results of a constructed prototype with the center operating frequency at 923 MHz showed that the antenna has a return loss S11 of about −24 dB, a gain level of about 9.48 dBi. The antenna has good impedance and radiation characteristics over the required bandwidth, 920-925 MHz (Chinese UHF RFID band).

Wideband high gain circularly polarized UHF RFID reader antenna

2016 ◽  
Author(s):  
Jian Li ◽  
Yongjun Huang ◽  
Yao Wang ◽  
Qing Zhang ◽  
Guangjun Wen ◽  
...  
Keyword(s):  
High Gain ◽  
Uhf Rfid ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna

Design of a Reader Antenna for UHF RFID

2014 ◽  
Vol 936 ◽  
pp. 2220-2224
Author(s):  
Hong Yang ◽  
Li Guo
Keyword(s):  
Numerical Simulation ◽  
Return Loss ◽  
Impedance Bandwidth ◽  
Uhf Rfid ◽  
Reader Antenna ◽  
Simulation Results ◽  
Uhf Band

A compact and circular polarized antenna for UHF band RFID handset reader was designed, and realized by cutting slits in the antenna patch and etching slots on the ground. Numerical simulation was performed for the characteristics of the antenna with the software HFSS 13.0.The simulation results show that when the size of antenna patch is 68mm×68mm, -10dB return loss impedance bandwidth is 49MHz,VSWR is less than 2 and the largest gain is -0.61dB for antenna in 907～931MHz. Compared with the traditional reader antenna with the same material of the substrate，the improved antenna has a much higher gain．and the size was reduced by 20% and the max gain is raised -0.11dB.

scholarly journals Fabrication of Hybrid Fractal Microstrip Antenna for Mobile and Wi-Max Applications

2019 ◽  
Vol 8 (11) ◽  
pp. 3373-3377
Keyword(s):  
Mobile Applications ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Test Bench ◽  
Ground Plane ◽  
Low Frequency ◽  
Frequency Range ◽  
Radiation Characteristics ◽  
Directional Radiation ◽  
Feeding Technique

This paper presents the fabrication of an octagonal fractal hybrid micro strip radiator patch antenna that operates over a frequency range of 1.5 GHz to 2GHz suitable for low frequency wireless and mobile applications. The radiator has a dimension of 85x85mm2 on the radiating side and 100x86mm2 ground plane. The model is fabricated on Fire Redundant4 substrate with thickness of 1.6mm over a 10x10mm2 dimension and uses coaxial feeding technique. The model is tested for its performance in the range of 1.5 to 2 GHz on the radiator test bench consists of MIC10 antenna trainer kit with an allowable frequency of up to 2GHz. The radiation characteristics shown are having good return loss and average gain of 39dB with omni directional radiation pattern. The size is to be optimized as the dimensions are very large compared to the usual requirements.

scholarly journals WIDEBAND CIRCULARLY POLARIZED UHF RFID READER ANTENNA WITH HIGH GAIN AND WIDE AXIAL RATIO BEAMWIDTHS

2012 ◽  
Vol 129 ◽  
pp. 365-385 ◽  
Author(s):  
Ping Wang ◽  
Guangjun Wen ◽  
Jian Li ◽  
Yongjun Huang ◽  
Liu Yang ◽  
...  
Keyword(s):  
Axial Ratio ◽  
High Gain ◽  
Uhf Rfid ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna

A Fractal-Based Circularly Polarized UHF RFID Reader Antenna

2014 ◽  
Vol 13 ◽  
pp. 499-502 ◽  
Author(s):  
Chinnambeti Raviteja ◽  
Chitra Varadhan ◽  
Malathi Kanagasabai ◽  
Aswathy K. Sarma ◽  
Sangeetha Velan
Keyword(s):  
Uhf Rfid ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna

Slits Loaded Circularly Polarized Universal UHF RFID Reader Antenna

2015 ◽  
Vol 14 ◽  
pp. 827-830 ◽  
Author(s):  
Chow-Yen-Desmond Sim ◽  
Yi-Wen Hsu ◽  
Guanli Yang
Keyword(s):  
Uhf Rfid ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Reader Antenna

A Miniaturized Circularly Polarized Antenna Design for RFID Reader

2014 ◽  
Vol 697 ◽  
pp. 425-428
Author(s):  
Yan Zhong Yu ◽  
Yun Yan Wang ◽  
Yan Ru Chen
Keyword(s):  
Radio Frequency Identification ◽  
High Frequency ◽  
Simple Structure ◽  
Low Cost ◽  
Surface Current ◽  
Antenna Design ◽  
Uhf Rfid ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Frequency Identification

A miniaturized circularly polarized (CP) antenna for ultra-high frequency (UHF) radio-frequency identification (RFID) reader is designed in the present paper. For the aim of miniaturizing antenna, the square radiating patch is opened by four T-shape slots. This can extend the route of surface current, as a result the operating frequency drops and the size reduces. In additional two diagonal corners of the radiation patch are truncated by a square to achieve CP operation. The designed antenna is calculated and optimized by HFSS. The optimized antenna exhibits satisfied performances, and is therefore suitable for UHF RFID reader applications. The designed antenna shows the advantages of small size, simple structure, and low cost.

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