Electrically small omni-directional antenna of circular polarization
- Yu, Yufeng
- He, Sailing
- Shen, Zhongxiang
Publication date
January 2012
DOI Publisher
Institute of Electrical and Electronics Engineers (IEEE)Abstract
A compact omni-directional antenna of circular polarization (CP) is presented for 2.4 GHz WLAN access-point applications. The antenna consists of four bended monopoles and a feeding network simultaneously exciting these four monopoles. The electrical size of the CP antenna is only λ0/5×λ0/5×λ0/13. The impedance bandwidth (|S11|<;-10 dB) is 3.85% (2.392 GHz to 2.486 GHz) and the axial ratio in the azimuth plane is lower than 0.5 dB in the operating band
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