A Single-Layer Dual-Band Dual-Sense Circularly-Polarized Patch Antenna Array with Small Frequency Ratio

2021 ◽  
pp. 1-1
Author(s):  
Qiong-Sen Wu ◽  
Xiao Zhang ◽  
Lei Zhu ◽  
Jing Wang ◽  
Gary Zhang ◽  
...  
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Frequency Ratio ◽  
Single Layer ◽  
Dual Band ◽  
Small Frequency ◽  
Circularly Polarized

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.

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