Optimum Design of Six-Element Yagi-Uda Arrays for Digital TV Systems

應用於數位電視系統之六節式Yagi-Uda陣列天線優化設計

林螢光(Y. K. Lin) ； 劉智群(J. C. Liu) ； 桂清平(C. P. Kuei) ； 盧樹台(S. T. Lu) ； 白朝仁(C. T. Bei) ； 黃楨凱(T. K. Hwang) ； 羅榮村(R.T. Lou)

《建國科大學報》 24卷1期 (2004/10) Pp. 33-43

https://doi.org/10.6995/JCTU.200410.0033

摘要

本論文探討兩組以六單元Yagi-Uda陣列天線為基礎之改良型天線研製。首先，應用摺疊式耦極諧振器取代原有耦極諧振器以改善頻率響應，接著設計兩組摺疊式Yagi-Uda陣列天線，一是保持均勻長度與間距的初始陣列，一是微調長度與間距的優化陣列，以得到較高的方向增益。天線的頻率響應涵蓋500~600MHz頻段，適合應用在數位電視接收機之廣播系統。論文中以頻率響應與輻射場型呈現實驗結果並作分析與討論。

關鍵字

數位電視系統 ； Yagi-Uda陣列

並列摘要

In this paper, implementations of two modified six-element Yagi-Uda arrays are discussed. Firstly, in contrast to the dipole resonator, the folded dipole resonator is used to improve the frequency responses. Secondly, two types of folded Yagi-Uda arrays are fabricated, one is the original array with uniform length and spacing, the other is the optimum array with perturbed length and spacing to obtain a higher directivity gain. This study shows the band of 500~600MHz can be used in digital TV receivers for the broadcasting applications. Frequency responses and radiation patterns are presented and discussed in this paper.

並列關鍵字

Digital TV system ； Yagi-Uda array