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差分馈电圆极化微带天线的设计 被引量:2

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摘要 设计一种中心频率在2GHz,带宽为300MHz的圆极化微带天线。在设计中采用双层贴片来增大3-dB轴比带宽,差分馈电的方式使天线的方向图具有较好的对称性。该设计的新型天线,阻抗带宽可以达到39.5%。低交叉极化水平保持不变,使得天线的极化纯度较高,并且3-dB轴比带宽达到了中心频率的15%。另外,在操作频带范围内,天线的增益是很稳定的,大约是8.7dBi。
出处 《大众科技》 2011年第5期39-39,49,共2页 Popular Science & Technology
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