On the Use of Spiral Antenna Arrays for Short-Pulse Ultra-Wideband Applications

被引：0
|
作者：
Elmansouri, Mohamed A. [1 ]
Filipovic, Dejan S. [1 ]
机构：
[1] Univ Colorado, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA
来源：
2013 IEEE INTERNATIONAL SYMPOSIUM ON PHASED ARRAY SYSTEMS AND TECHNOLOGY | 2013年
关键词：
circular polarization; fidelity factor; spiral antennas; ultra-wideband;
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：
Seven-element hexagonal arrays based on two-and four-arm spiral elements are introduced and analyzed in frequency and time domains. Full-wave modeling based on CST Microwave Studio verifies that these arrays can work over 4: 1 bandwidth with VSWR<2.1:1, side lobe level (SLL)<-10dB, broadside axial ratio <2 dB over the most operating bandwidth, appealing scanning capability over wide scan angles, and fidelity factor (FF)>90% indicating simultaneously good time and frequency domain performances. The benefits of using the fourarm spiral antenna to achieve an array with dual-circular polarization operation and better axial ratio are demonstrated. Also, arrays' efficiency and the complexity of the feed network of the multi-arm spiral antenna array are investigated and possible solutions are successfully demonstrated.
引用
收藏
页码：139 / 144
页数：6
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