印刷式微型化雙頻槽孔天線設計

Design of Printed Compact Dual-Band Slot Antennas

賴志宏(Chih-hung Lai)

指導教授 ： 丘增杰

國立中央大學/資訊電機學院/電機工程學系/碩士(2008年)

摘要

摘要

在本論文中，我們將研究一微型化雙頻槽孔天線在2.4 GHz和5 GHz無線網路上的應用。在本篇論文提到，天線設計的特點在於體積微型化的設計，而縮小天線本體的大小，不外乎是改變其形狀；而我們利用天線彎曲（meander）及多條槽孔（multislot）的方式來實現；最後天線本體僅10 x 10 x 0.4 mm^3大小。不僅於此，最後天線可在 PCB板邊實現，方便其它積體電路的整合；同時並提供最高超過0 dBi的輻射增益。量測與模擬有不錯地一致性。
此外，提出了一以微帶線饋入方式的新型微型化雙頻槽孔天線；此天線可有效地抑制倍頻及更縮小其體積。
最後，模擬一系列當其金屬元件靠近天線本體時，反射損耗值的表現，以及訊號線靠近天線本體時，反射損耗值與隔離度的表現，均可發現有不錯的特性呈現。

關鍵字

微型化 ； 雙頻天線 ； 槽孔

並列摘要

Design of Printed Compact Dual-Band Slot Antennas
ABSTRACT

In the thesis, we investigate a compact dual-band slot antenna for 2.4 GHz and 5 GHz wireless applications. A technique for compact antenna design is proposed. Reduced-size monopole slot antennas with different slot shapes placed on a small ground plane are studied. We propose the dual-band slot antenna with a compact size of 10 x 10 x 0.4 mm^3.This antenna locates at the corner of the ground plane and can be easily integrated with other circuits as a whole in a PCB. The peak gain of the proposed antenna is more than 0 dBi. The measurement is in good agreement with simulation. Additionally, a novel compact microstrip-fed dual-band slot antenna is proposed to achieve suppression of harmonics and miniaturization of the antenna.

並列關鍵字

compact ； dual-band ； slot antenna

參考文獻

[1] K. Virga and Y. Rahmat-Sami,“Low-profile enhanced-bandwidth pifa antennas for wireless communications packaging, ”IEEE Transactions on Antennas and Propagation, vol. 45, no. 10, pp. 1879-1888, Oct. 1997.

[3] H. G. Akhavan and D. M. Syahkal:“Study of coupled slot antennas fed by microstrip lines,”10th Int. Conf. on Antennas and Propagation, Edinburgh, UK, 1997, vol. 1, pp. 1290-1292

[4] J. Y. Sze and K. L. Wong,“Bandwidth enhancement of a microstrip line-fed printed wide-slot antenna,” IEEE Transactions on Antennas and Propagation, vol. 49, no. 7, pp. 1020-1024, Jul. 1997.

[5] S. I. Latif, L. Shafai, and S. K. Sharma,“Bandwidth Enhancement and Size Reduction of Microstrip Slot Antennas, ”IEEE Trans. Antennas Propag., vol. 53, no.3, pp. 994-1003, MARCH 2005.

[6] S. K. Sharma, L. Shafai, and N. Jacob,“Investigation of wide-band microstrip slot antenna,”IEEE Trans. Antennas Propag., vol. 52, pp. 865-872, Mar. 2004.