| 一种新型CPW 馈电宽带圆极化缝隙天线 |
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| 引用本文： | 王敏,杨林,杨超,王世伟.一种新型CPW 馈电宽带圆极化缝隙天线[J].微波学报,2012,28(S2):171-174. |
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| 作者姓名： | 王敏 杨林 杨超 王世伟 |
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| 作者单位： | 西安电子科技大学天线与微波技术国家重点实验室，西安 710071 |
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| 摘 要： | 设计了一种新型的CPW 馈电宽带圆极化缝隙天线，圆形槽天线与共面波导馈电在介质板的同面上。通过在
两个圆形槽的中间开一个纵向插槽，调整槽之间的相对位置和各自的几何参数，可以得到一个由两个正交九十度相位
差的电场激发的圆极化波。最终仿真结果表明该天线在频带1.0GHz 到1.8GHz 满足反射系数小于-10dB、轴比小于3dB，
相对带宽达到57%，工作频带覆盖了GPS 等卫星导航系统。该天线具有十分紧凑的平面结构，结构简单，容易加工，
便于实验调试，具有广阔的应用前景。
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| 关 键 词： | CPW 馈电 圆极化 宽带 |
Design of a Novel CPW-Fed Broadband Circularly Polarized Slot Antenna |
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| WANG Min,YANG Lin,YANY Chao,WANG Shi-wei.Design of a Novel CPW-Fed Broadband Circularly Polarized Slot Antenna[J].Journal of Microwaves,2012,28(S2):171-174. |
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| Authors: | WANG Min YANG Lin YANY Chao WANG Shi-wei |
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| Abstract: | In this paper, design of a novel CPW-fed broadband circularly polarized slot antenna is proposed. The slot
antenna and the feeding structure are fabricated on the same plane of the substrate. By etching a longitudinal slot at a
middle point of two circle-shaped slot and tuning the position geometrical parameters of each other, two orthogonal
electric fields with quadrature phase difference excite a circularly-polarized wave. The proposed slot antenna exhibits an
effective bandwidth of 57% from 1.0GHz to 1.8GHz with an axial ratio <3 dB and reflection coefficient <-10 dB. The
effective bandwidth can cover GPS and other satellite navigation systems. The antenna has a very compact structure,
besides the proposed antenna can be easily fabricated with low cost and widely used. |
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| Keywords: | CPW-fed circularly polarized wideband antennas |
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