臺灣博碩士論文加值系統

本篇論文提出一種利用並聯饋入線通過菱形槽孔藉此耦合到環形金屬貼片和十字槽孔耦合到矩形貼片來產生雙頻圓極化波的獨特設計，而饋入線的結構是由兩個傳輸線並聯而成，該結構可以很容易操作在RFID(0.902GHz~0.928GHz和2.4GHz~2.5GHz)的雙頻圓形極化天線，此天線模擬與量測的結果都明顯說明此天線有很好的圓極化輻射特性。

This thesis presents a parallel feed line which couples diamond-shaped slot to ring and cross-slot to patch. The feed line is used to feed the two parts in parallel. Then, the structure can easily be operated as a dual-band circularly polarized antenna to cover both (0.902GHz~0.928GHz and 2.4GHz~2.5GHz) bands. Simulated and measured results indicate that the proposed antenna can achieve good circularly polarized radiation performance.

誌謝 i
ABSTRACT ii
中文摘要 iii
圖目錄 vi
表目錄 ix
第一章 概論 1
1.1射頻辨識系統簡介 1
1.2研究動機 3
1.3論文結構 3
第二章 天線理論 4
2.1微帶槽孔天線慨論 4
2.2利用微帶線耦合槽孔產生圓形極化天線 5
第三章 微帶槽孔天線設計與模擬 8
3.1簡介 8
3.2使用十字開槽與矩形貼片設計在高頻段RFID模擬 9
3.3 利用一新槽孔與環形貼片設計在低頻段RFID模擬 16
3.4將兩結構組合產生雙頻圓極化天線模擬 26
3.5 雙頻圓極化天線對槽孔和微帶線結構之模擬 31
3.5.1移除十字槽結構 31
3.5.2移除菱形開槽結構 33
3.5.3移除矩形貼片結構 35
3.5.4移除環形貼片結構 37
第四章 量測與討論 40
4.1模擬與量測數據 40
4.2 討論 45
第五章 結論 49
參考文獻 50

[1]洪茂峰，整合式天線與寬頻介質共振天線設計之研究，國立成功大學，電子工程研究所，2006年。
[2] J. D. Kruas, Antenna, McGrall Hill, New York, 1998.
[3] H. G. Booker, “Slot aerials and their relation to complementary wire aerials,” J. IEE(London), part3A, vol.93, pp.620-626, May 1946.
[4] D. M. Pozar, “A reciprocity method of analysis for printed slot and slot-coupled micro strip antennas,” IEEE Trans. Antenna Propag., vol.34, no.12, pp.1439-1446, December 1986.
[5] M. Kahrizi, T. K. Sarkar and Z. A. Maricevic, “Analysis of a wide radiating slot in the ground plane of a microstrip line,” IEEE Trans. Microwave Theory Tech., vol.41, pp.29-37, January 1993.
[6] E. Aloni and R. Kastner, “Analysis of a dual circularly polarized microstrip antenna fed by crossed slots,” IEEE Trans. Antenna Propag., vol.42, no.8, pp.1053-1058, August 1986.
[7] H. Kim, B. M. Lee and Y. J. Yoon, “A single-feeding circularly polarized microstrip antenna with the effect of hybrid feeding,” IEEE Antennas and Wireless Propagation Letters, vol.2, pp.74-77, July 2003.
[8] O. Klemp and H. Eul, “Diversity Performance of Log.-Per. Planar Antennas in Array Configurations for Multi-Radio Applications,” Global Telecommunications Conference, IEEE, pp.1-5, 2006.
[9]陳彥均，以一新頴之槽孔結構耦合圓形極化環形天線，大同大學，通訊工程研究所，2010年。
[10] T. N .Chang and J. M. Lin, “Serial aperture-coupled dual band circularly polarized antenna, ”IEEE Antennas and Wireless Propagation Letters, vol.59, pp.2419-2423, June 2011.