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研究生:李俊杰
研究生(外文):Jin-Jei Lee
論文名稱:寬頻共平面波導饋入槽孔天線
論文名稱(外文):A Wideband CPW-fed Slot Antenna
指導教授:王健仁
指導教授(外文):Chien-Jen Wang
學位類別:碩士
校院名稱:逢甲大學
系所名稱:電機工程所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:中文
論文頁數:84
中文關鍵詞:不對稱接地面三叉式饋入架構金屬貼片調整段幅射場形切換槽孔天線
外文關鍵詞:three-arm fork feeding structureasymmetric ground planetuning stubslot antennaswitching radiation pattern
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本論文主要目的是探討一個可隨頻率改變造成場形切換的寬頻槽孔天線,並詳細分析天線之模擬與實驗的結果。首先,藉由三叉式饋入架構來改變磁流方向,使其在操作頻率範圍內具有水平與垂直磁流,幅射場形涵蓋共極化與交叉極化。再者,利用加入金屬貼片調整段和不對稱的接地面等兩種簡單的方法來降低操作頻率且增加頻寬,使得此共平面波導饋入寬頻槽孔天線不僅可以包含2.4 GHz、5.2 GHz 及5.8 GHz 之三頻無線區域網路操作,更可因為垂直磁流和水平磁流隨頻率點不同而改變具有幅射場形切換的特性。
In this thesis, a CPW-fed pattern-frequency-dependent wideband slot antenna has been implemented and investigated. The simulated and measured results of the antenna are detailed and analyzed. First, the horizontal and vertical magnetic currents are alternatively excited when the operated frequency is changed by
utilizing a three-arm fork feeding structure. Second, we present two practical techniques to modify the operated frequency, enhance the bandwidth and lower the frequency of the antenna. One is to add tuning stubs on the side of the slot antenna, and the other is to use the asymmetrical ground plane. The bandwidth of this antenna covers 2.4 GHz、5.2 GHz and 5.8 GHz;meanwhile, the radiation patterns of this antenna are switched frequency-dependently.
中文摘要 i
Abstract ii
致謝 iii
目錄 iv
圖目錄 vi
表目錄 x
第一章序論
1.1 研究動機 1
1.2 研究方向 3
1.3 章節概述 3
第二章槽孔天線簡介和探討
2.1 序論 4
2.2 文獻探討 11
第三章具切換幅射場形寬頻槽孔天線
3.1 概述 13
3.2 天線設計 14
3.3 數據與分析 17
第四章未來研究方向 64
參考文獻 65
個人著作 69
作者簡介 71
[1] 白光宏,「天線原理及應用」台北:明文書局,中華民國
[2] Constantine A. Balanis, Antenna Theory Analysis and Design, John Wiley, New York, 1997.
[3] W. S. Chen, C. K. Wu and K. L. Wong, “Compact circularly polarised microstrip antenna with bent slots,” IEE Electronics Letters, vol. 34,pp. 1278-1279, Jun. 1998.
[4] R. B. Waterhouse, S. D. Targonski and D. M. Kokotoff, “Design and performance of small printed antennas,” IEEE Trans. Antennas and Propagation, vol. 46, pp. 1629-1633, Nov. 1998.
[5] R. B. Waterhouse, “Small printed antennas with low cross-polarised fields,” IEE Electronics Letters, vol. 33, pp. 1280-1281, Jul. 1997.
[6] S. W. Lu, C. H. Yang and P. Hsu,“A CPW-fed slot-loop antenna with low cross-polarization radiation,” in Proc. ’00 Asia-Pacific Microwave Conf., Sydney, Australia,pp.1400-1402.
[7] G. Booker, “Slot aerials and their relation to complementary wire aerials,” J. Inst. Elect. Eng. (London, U.K.), pt. IIIA, vol. 93, pp.
[8] Y. W. Jang, “Large-bandwidth double-T-shaped microstrip-fed single-layer single-slot antenna,” Microwave and Optical Technology Letters, vol. 30, no. 3, pp. 185-187, Aug. 2001.
[9] J. Y. Sze, and K. L. Wong, “Bandwidth enhancement of a microstrip-line-fed printed wide-slot antenna,” IEEE Trans. Antennas and Propagation, vol. 49, no. 7, pp. 1020-1024, July. 2001.
[10] X. Qing, M. Y. W. Chia and X. Wu, “Wide-slot antenna for UWB applications,” 2003 IEEE International Symposium on Antennas and Propagation, pp. 834-837, 2003.
[11] P. H. Rao, “Feed effects on the dimensions of wideband slot antennas,” Microwave and Optical Technology Letters, vol. 40, no. 1, pp. 77-79, Jan.2004.
[12] Y. W. Jang, “Broadband cross-shaped microstrip-fed slot antenna,” IEE Electronics Letters, vol. 36, pp. 2056-2057, Dec. 2000.
[13] N. Behdad, and K. Sarabandi, “A wide-band slot antenna design employing a fictitious short circuit concept,” IEEE Trans. Antennas and Propagation, vol. 53, no. 1, pp. 475-482, Jan. 2005.
[14] W. J. Lui, C. H. Cheng and H. Zhu, “Frequency notched ultra-wideband microstrip slot antenna with fractal tuning stub,” IEE Electronics Letters, vol. 41, pp. 294-296 Mar. 2005.
[15] C. J. Wang, J. J. Lee, and R. B. Huang, “Experimental Studies of a Miniaturized CPW-Fed Slot Antenna With the Dual-Frequency Operation”, IEEE Antennas and Wireless Propagation Letters, vol.2, pp.151-154, 2003.
[16] J. Y. Jan and J. W. Su, “Bandwidth Enhancement of a Printed Wide-Slot Antenna With a Rotated Slot”, IEEE Trans. Antennas and Propagation, vol.53, No.6, pp.2111-2114, June 2005.
[17] C. J. Wang, and W.T. Tsai, “A stair-shaped slot antenna for the triple-band WLAN applications,” Microwave and
Optical Technology Letters, vol. 39, no. 5, pp. 370-372, Dec. 2003.
[18] M. Paulson, S. O. Kundunkulam, C. K. Aanandan, P.Mohanan and K. Vasudevan, “Compact microstrip slot antenna for broadband operation,” Microwave and Optical Technology Letters, vol. 37, no. 4, pp. 248-250, May. 2003.
[19] S.Y. Lin and K. L. Wong, “A dual-frequency microstrip-line-fed printed slot antenna,” Microwave and
Optical Technology Letters, vol. 28, no. 6, pp. 373-375, Mar. 2001.
[20] J. W. Wu, H. M. Hsiao, J. H. Lu and S. H. Chang, “Dual broadband design of rectangular slot antenna for 2.4 and 5 GHz wireless communication,” IEE Electronics Letters, vol. 40, pp. 1461 – 1463, Nov. 2004.
[21] J. Y. Chiou, J. Y. Sze and K. L. Wong, “A broadband CPW-fed strip-loaded square slot antenna,” IEEE Trans. Antennas and Propagation, vol. 51, pp. 719-721, Apr. 2003.
[22] H. G. Schantz, “Measurement of UWB Antenna Efficiency,” IEEE Vehicular Technology Conference, 2001 vol. 2, pp. 1189-1191.
[23] R. Chair, K. M. Luk and K. F. Lee, “Radiation Efficiency Analysis on Small Antenna by Wheeler Cap Method,” Microwave and Optical Technology Letters, vol. 33, no. 2, April 2002.
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