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一种宽带圆极化天线阵的设计 被引量:4

Design of Broadband Circularly Polarized Antenna Array
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摘要 为了有效拓展阻抗带宽和圆极化带宽,分析了一种宽带多层结构的圆极化微带贴片天线。通过调整贴片和倒角的大小,并通过在底层贴片上周期性开槽,在天线工作于3.0GHz时,可以获得16.14%(VSWR<2.0)的阻抗带宽和10.47%的3dB轴比带宽。在此基础上,制作了一个4×4元小型平面圆极化天线阵,阻抗带宽可以达到26.67%(VSWR<2.0),轴比带宽可以达到11.12%(AR<3dB)。这种结构的天线阵在无线通信等领域应用前景广阔。 In this paper, a broadband circularly polarized mierostrip antenna with multiple layers is analyzed thus to broaden the impedance band and AR band. Through adjusting the dimension of the patches and notching on the bottom periodically, the 16. 14% (VSWR〈2.0) bandwidth and IO. 47%(AR〈3dB) bandwidth are achieved when L=3.0GHz. Then a planar array with 4× 4 elements is fabricated, the 26.67% (VSWR〈2.0) bandwidth and ll. 12%(AR〈3dB) bandwidth are achieved respectively. Such circularly polarized array could be extensively used in communication field.
出处 《通信技术》 2009年第10期43-45,共3页 Communications Technology
关键词 宽带 圆极化 天线阵 多层 broadband circularly polarized array: multi-layer
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