A single-feed tri-band circularly polarized dual-annular slot antenna for wireless applications

2012 ◽  
Vol 26 (11-12) ◽  
pp. 1389-1396 ◽  
Author(s):  
L. Wang ◽  
Y.-X. Guo ◽  
W.X. Sheng
Author(s):  
Jianxing Li ◽  
Xiaoke Zhang ◽  
Jianzhong Chen ◽  
Juan Chen ◽  
Kai Da Xu ◽  
...  

Author(s):  
Amrita Gorai ◽  
Bappadittya Roy ◽  
G. K. Mahanti

A compact circularly polarized CPW-fed slot antenna is proposed here. The antenna consists of a pentagonal patch within an asymmetrical slot with a single coplanar waveguide feed. The proposed antenna is excited with CPW feed mechanism and investigated experimentally. The structure is fabricated on FR4 epoxy substrate with a permittivity of 4.4. The impedance bandwidth of 10[Formula: see text]GHz (4[Formula: see text]GHz to 14[Formula: see text]GHz) and the axial ratio bandwidth of 1.2[Formula: see text]GHz with the corresponding fractional bandwidth of 113%. The simulation results fulfil the bandwidth requirements of IEEE 802.11a (5.15–5.35[Formula: see text]GHz/5.47–5.725[Formula: see text]GHz) for wireless applications. In terms of bandwidth, compactness and circular polarization comparable results between simulated and measured results clearly show the validity of the proposed structure.


2012 ◽  
Vol 55 (2) ◽  
pp. 413-418 ◽  
Author(s):  
Sasan Ahdi Rezaeieh ◽  
Serkan Şimşek ◽  
Javad Pourahmadazar

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