雙頻圓極化槽孔天線

DUAL-BAND CIRCULAR POLARIZATION SLOT ANTENNA

韓岳霖(Yueh-Lin Han)

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(2010年)

摘要

本篇論文提出一種使用微帶線去激發Ｌ型槽孔和Ｃ型槽孔的天線。Ｃ型槽孔是以一方型槽孔為主，並在一段上用金屬取代槽孔所形成，在此研究乃是把L型槽孔嵌入C型槽孔內且得到一支雙頻圓形極化的天線設計。而最主要的控制因素是L型槽孔的寬度；在經過調整後，我們可以分別在1.575GHz and 2.45GHz得到5.7%和6.1%的圓形極化頻寬。

關鍵字

槽孔天線

並列摘要

A combination of a C-shaped and an L-shaped slot antenna excited by a microstripline is presented in this thesis. The C-shaped slot is modified from a square slot ring by replacing one segment of the slot ring with a metal.
It is studied by embedding one L-shaped slot inside the C-shaped slot, a dual-band circularly polarized antenna can be formed. The main controlling parameter is the width of the L-shaped slot. After tuning, we can get 5.7% axial ratio bandwidth and 6.1% axial ratio bandwidth respectively in 1.575GHz and 2.45GHz band

並列關鍵字

slot antenna

參考文獻

[1] W.S. Chen, C.C. Huang, and K.L. Wong, “Microstrip-Line-Fed Printed Shorted Ring-Slot Antenna For Circular Polarization,” Microwave and Optical Technology Letters / vol. 31, no. 2, pp.137-140, Oct. 20 2001.

[2] T.N. Chang and A. Lin, “An L-shaped circularly polarized slot antenna,”

Antennas and Propagation Society International Symposium, vol.4, pp.2786-2789, 1999.

[3] J.S. Rao and B.N. Das, Impedance characteristics of transverse slots in the ground plane of a stripline, Proc Inst Elect Eng 125, pp.29-32, 1978.

[4] Y. Muramoto and T. Fukusako, “Circularly Polarized Broadband Antenna With L-Shaped Probe and L-Shaped Wide-Slot,” Microwave Conference, 2007., Asia-Pacific, pp.11-14, 2007.