scholarly journals Dual-Band Dual-Sense Circularly Polarized Stacked Patch Antenna With a Small Frequency Ratio for UHF RFID Reader Applications

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 15260-15270 ◽  
Author(s):  
Zhongbao Wang ◽  
Ruru She ◽  
Junjie Han ◽  
Shaojun Fang ◽  
Yuanan Liu
Keyword(s):  
Patch Antenna ◽  
Frequency Ratio ◽  
Dual Band ◽  
Uhf Rfid ◽  
Small Frequency ◽  
Circularly Polarized ◽  
Rfid Reader ◽  
Stacked Patch Antenna

Single-feed circularly polarized stacked patch antenna with small-frequency ratio for dual-band wireless applications

2015 ◽  
Vol 8 (8) ◽  
pp. 1207-1213 ◽  
Author(s):  
Sachin Kumar ◽  
Binod K. Kanaujia ◽  
Mukesh K. Khandelwal ◽  
A.K. Gautam
Keyword(s):  
Patch Antenna ◽  
Frequency Ratio ◽  
Axial Ratio ◽  
Dual Band ◽  
Radiation Characteristics ◽  
Small Frequency ◽  
Circularly Polarized ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Good Agreement

A single-feed dual-band circularly polarized stacked microstrip patch antenna with a small-frequency ratio is presented. Two pair of orthogonal slits is cut on the lower circular patch for achieving circular polarization and truncated corner square patch is used as the upper parasitic element. The frequency ratio of the dual-band is 1.03. The 3 dB axial ratio bandwidth is 1.3% for the upper band and 1.1% for the lower band. Proposed structure is fabricated on the FR-4 epoxy substrate and fed by SMA connector. The measured results are in good agreement with the theoretical and simulated results. The antenna shows stable radiation characteristics in both bands of operation.

Dual-band circularly polarized wearable patch antenna for RFID Reader

2021 ◽  
Author(s):  
Shivani Sharma ◽  
Malay Ranjan Tripathy ◽  
Ajay Kumar Sharma
Keyword(s):  
Patch Antenna ◽  
Dual Band ◽  
Circularly Polarized ◽  
Rfid Reader
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