Circularly polarized beam-steering antenna array with enhanced characteristics using UCEBG structure

被引：7
|
作者：
Aribi, Tohid [1 ]
Naser-Moghadasi, Mohammad [1 ]
Sadeghzadeh, R. A. [2 ]
机构：
[1] Islamic Azad Univ, Sci & Res Branch, Fac Engn, Tehran, Iran
[2] KN Toosi Univ Technol, Fac Elect & Comp Engn, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES | 2016年 / 8卷 / 06期
关键词：
Circular polarization; Switched beam; Axial-ratio; Impedance bandwidth; Compact electromagnetic band-gap structure; Sequentially rotation; SQUARE SLOT ANTENNA; BAND; DESIGN; MATRIX;
D O I：
10.1017/S1759078715000318
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 broadband circularly polarized (CP) beam-steering antenna array is presented. CP antenna is composed of four identical CP slot elements with 2 x 2 configuration and a 4 x 4 feeding network. CP slot element is utilized in array form to improve impedance bandwidth and sequentially rotation method is used to increase axial-ratio bandwidth. Moreover, uni-planer compact electromagnetic band-gap structure is applied to enhance the overall performance of antenna array. Measured results depict that the array has impedance bandwidth over a frequency range of 4.1-7 GHz (similar to 53%) for S-11 -10 dB and 3 dB axial-ratio bandwidth of 1.95 GHz that is between 4.6 and 6.55 GHz (similar to 35%). The antenna array has peak gain of 11 dBi at 5.5 GHz.
引用
收藏
页码：955 / 962
页数：8
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