A Wideband Omnidirectional Circularly Polarized Spiral Antenna

被引：0
|
作者：
Matsunaga, Mayumi [1 ]
机构：
[1] Ehime Univ, Dept Elect & Elect Engn, Matsuyama, Ehime, Japan
来源：
2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) | 2016年
关键词：
circularly polarized antennas; wide-beam; wideband; omnidirectional; planar;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel wideband omnidirectional circularly polarized (CP) antenna is presented. The antenna is constituted by spiral radiators and a dipole feeder. To configure the spiral radiators in cross shape leads not only omnidirectional radiations but also circularly polarization. Combining the spiral radiators with a dipole feeder, the presented antenna achieves wideband CP radiations as keeping good $(11) characteristics. The configuration and simulated characteristics of the antenna are presented. Simulation results show that the antenna achieve a -8 dB impedance bandwidth of 12.5% and a 4 dB axial ratio (AR) bandwidth of 20% in the boresight direction. At 3.66 GHz, the maximum gain is 4.4 dBi and the 4 dB AR beam-width is 120 degrees.
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页数：2
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