一種新型漸變槽孔天線之改良

Improvement of a Novel Tapered Slot Antenna

周效賢(Hsiao-Hsien Chou)

指導教授 ： 李慶烈

淡江大學/工學院/電機工程學系碩士班/碩士(2018年)

https://doi.org/10.6846/TKU.2018.00460

摘要

本論文研究一種新型漸變槽孔天線之改良，利用等差田口最佳化法進行優化，再比較直交表的模擬實驗與響應表的結果，擇優進行迭代，並透過縮小搜尋位準範圍，以等差逐代縮減的過程，並將其結合於仿樣函數以應用於漸變槽孔天線的輪廓設計。
本論文之目標函數之一為1~3GHz範圍內之|S11|<-10db，且在此目標函數的條件下，納入增益(Gain Total)為新的目標函數之一，新目標在使1~3GHz之增益曲線平穩線性，其中增益是指∅=0°，θ=90°方向的增益(Gain Total)。
本論文將探討當增益被新納入目標函數時，漸變槽孔天線的性能，並與之前未納入時的漸變槽孔天線進行比較；包括以之前設計之仿樣曲線漸變槽孔天線為基礎的初版設計，以及不再奠基於之前基礎的第二版設計。

關鍵字

韋瓦第天線 ； 漸變槽孔天線 ； 仿樣曲線 ； 直交表 ； 田口最佳化法 ； 響應表

並列摘要

In this thesis the improvement of a novel taper slot antenna is studied. The design optimization is carried out using a method named arithmetical Taguchi's optimization method (ATOM). It compares the results of the simulated experiments via the orthogonal table and those by the response table, and then keep the better result for that next iteration to be performed. During the course of searching process, the search ranges are reduced gradually in an arithmetical way to converge to the sub-optimal solution. The profile of a tapered slot antenna is then designed with the help of cubic spline technique to reduce the unknown number.
The objective function of the thesis consists of two parts. One is set to have|S11|<-10db for 1~3GHz. The other is to have the antenna gain to meet with a specified curve, of which the goal is to make the gain curve varies in a linear way smoothly for 1~3GHz. Here, the gain refers to total gain at ∅=0° and θ=90°. The weightings of these two parts are set equal.
This thesis investigates the performance of the tapered slot antenna as the gain is newly added to the objective function, and compare it with that of the tapered slot antenna that was not included previously. These include two cases, of which one version is designed based on a previously designed spline curve. The second version is designed newly, not based on previously designed spline curve .

並列關鍵字

Vivaldi Antenna ； OA table ； Cubic Splines ； Tapered Profile ； Taguchi method

參考文獻

[1] T. Pinpart, M. D. Judd, Differentiating between partial discharge sources using envelope comparison of ultra-high-frequency signals, IET Science, Measurement and Technology, 4, 2010, pp. 256-267.

[2] R. Sarathi, G. Koperundevi, UHF technique for identification of partial discharge in a composite insulation under AC and DC voltages, IEEE Transactions on Dielectrics and Electrical Insulation, 15, 2008, pp. 1724-1730.

[3] Y. Shibuya, S. Matsumoto, M. Tanaka, H. Muto, Y. Kaneda, Electromagnetic waves from partial discharges and their detection using patch antenna, IEEE Transactions on Dielectrics and Electrical Insulation, 17, 2010, pp. 862-871.

[4] S. Tenbohlen, D. Denissov, S.M. Hoek, S.M. Markalous, Partial Discharge Measurement in the Ultra High Frequency (UHF) Range, IEEE Transactions on Dielectrics and Electrical Insulation, 15, Dec. 2008, pp. 1544-1552.

[5] W. Gao, D. Ding, W. Liu, Research on the typical partial discharge using the uhf detection method for GIS, IEEE Transactions on Power Delivery, 26, 2011, pp. 2621-2629.