利用共平面波導正反面植入微擾環產生圓形極化天線

CPW-FED CP ANTENNA WITH PERTURBED RINGS ON BOTH SIDES OF THE GROUND PLANE

張智堯(Chih-Yao Chang)

指導教授 ： 張知難

大同大學/電機資訊學院/通訊工程研究所/碩士(2011年)

摘要

本論文提出一個共平面波導饋入圓極化天線。在結構上，主要是藉著將共平面波導饋入的接地面上蝕刻成兩個弧形狹縫。另外在天線的背面設計背覆耦合L型槽孔。發現在天線背面的狹縫對於產生圓極化波有重要的影響。透過整合弧形狹縫與背覆耦合L型槽孔這兩者，可以大大的增強天線的共平面頻寬。
天線量測折返損失為2.37GHz~4GHz，而天線量測軸比頻寬為2.4GHz~2.9GHz，天線增益頻寬為2.3GHz~4GHz。

關鍵字

共平面波導 ； 圓形極化 ； 背覆金屬 ； 背覆槽孔

並列摘要

A CPW-fed circularly polarized antenna is presented. In configuration, two arc-shaped strips are formed by cutting slits on the ground plane of the CPW transmission line. There is also a slits-loaded ring on the backside of the antenna. The slits on the backside of the antenna are found important to generate the circularly polarized wave. By integrating the two arc-shaped strips with the slits-loaded ring, the CP bandwidth of the antenna can largely to enhance.

並列關鍵字

circularly polarized antenna ； CPW-CP

參考文獻

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Trans. Antennas Propag., vol. 56, pp. 1777–1780, Jun. 2008.