應用時域有限差分法研究U型槽平板天線

Application of FDTD Method to Study U-Slot Patch Antennas

陳舒璇(Shu-Hsuan Chen)

指導教授 ： 陳興義

元智大學/工程學院/通訊工程學系/碩士(2006年)

https://doi.org/10.6838/YZU.2006.00067

摘要

本論文使用時域有限差分法成功的去研究U型槽平板天線及改良式U型槽平板天線的特性，而不是用商業軟體如HFSS、IE3D以及CST去作研究。時域有限差分法的準確性由實驗量測證明正確無誤。利用壹矩形金屬細長片與底層中心線成各種不同角度取代底層金屬板去改良U型槽平板天線，結果發現此改良式U型槽平板天線可以產生多頻區運作、寬頻帶、好的輸入阻抗匹配和高的天線效率。如果U型槽平板天線金屬底層嵌入U型磁性材料小平板，結果發現在逆程損耗10 dB 以上的頻寬變得非常寬且天線效率提高了。

關鍵字

應用時域有限差分法 ； 平板天線

並列摘要

The finite-difference time domain(FDTD) method, instead of commercial software packages such as HFSS, IE3D, and CST, is successfully used to study characteristics of U-Slot and modified U-slot Patch Antennas. The validation of the FDTD method is checked by measurements. The modified U-slot patch antenna using a metallic oblong-patch with different angles is respected to the center line as the bottom layer has been proven that it can provide wide-band enhancement, multi-band operation, good impedance matching, and high antenna efficiency. Finally, The modified U-slot patch antenna with a small ferromagnetic U-strip inserted in the metallic bottom layer has been shown to provide a return loss in excess of 10 dB over an extremely wide frequency range and high antenna efficiency.

並列關鍵字

FDTD Method ； Patch Antennas

參考文獻

[1] R. L. Li, G. DeJean, M. M. Tentzeris, J. Papapolymerous, and J. Laskar, “ FDTD analysis of patch antennas on high dielectric-constant substrates surrounded by a soft-hard surface,” IEEE, Trans. Magnetics, vol. 40, no. 2, pp. 1444-1447, Mar. 2004.

[2] C. Wu, K. L. Wu, Z. Q. Bi, and J. Litva, “ Accurate Characterization of planar printed antennas using finite-difference time-domain method,” IEEE, Trans. Antennas Propagat., vol. 40, no. 5, pp. 526-534, May 1992.

[3] H. J. Delgado and M. H. Thursby, “ A novel neural network combined with FDTD for the synthesis of a printed dipole antenna,” IEEE, Trans. Antennas Propagat., vol. 53, no. 7, pp. 2231-2236, July 2005.

[4] X. Zhang, J. Fang, K. K. Mei, and Y. Liu, “ Calculations of the dispersive characteristics of microstrips by the finite-difference time-domain method,” IEEE Trans. Microw. Theory Tech., vol. 36, no. 2, pp. 263-267, Feb. 1988.

[5] D. M. Sheen , S. M. Ali, M. D. Abouzahra, and J. A. Kong, “1Application of the three-dimensional finite-difference time-domain method to the analysis of planar microstrip circuits,” IEEE Trans. Microw. Theory Tech., vol. 38, no. 7, pp. 849-857, July 1990.