| DC 欄位 |
值 |
語言 |
| DC.contributor | 通訊工程學系 | zh_TW |
| DC.creator | 黃耿毅 | zh_TW |
| DC.creator | Geng-Yi Huang | en_US |
| dc.date.accessioned | 2004-6-30T07:39:07Z | |
| dc.date.available | 2004-6-30T07:39:07Z | |
| dc.date.issued | 2004 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=91523030 | |
| dc.contributor.department | 通訊工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 本論文主要在於討論印刷式八木天線其各種參數對天線的影響，並在尋找簡易設計程序的原則下，簡化設計參數。這些參數包括元件的長度，天線饋入結構以及這元件間距。根據這些基本的探討，將會提出設計印刷式八木天線之準則、探討天線方向性、頻寬與背向輻射比等性能，並提出簡易的快速設計程序。在論文，亦將提出新的反射子結構。在不明顯的影響天線方向性下，此新結構將有效地提高背向輻射比。 | zh_TW |
| dc.description.abstract | The goal of the thesis is to study the effects of many arguments, including the dimensions and the feeding structure of the printed Yagi antenna, on the center frequency, mid-band gain, and front-to-rear(F/R) ratio. Then, the guidelines of the antenna design will be proposed based on the simulation results. Basically, using the traditional configuration of the printed Yagi antenna, the mid-band gain or the F/R ratio cannot be improved without scarifying the other. Therefore, at the end of the thesis, a novel reflector formed by multiple dipoles is proposed. Through simulations and measurements, it is found the proposed configuration highly improves the F/R ratio while the mid-band gain remains almost unchanged. | en_US |
| DC.subject | 剖風儀 | zh_TW |
| DC.subject | 八木天線 | zh_TW |
| DC.subject | wind profilier | en_US |
| DC.subject | yagi antenna | en_US |
| DC.title | 剖風儀之關鍵零組件—印刷式八木天線設計 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Key component of wind profilier - printed Yagi antenna design | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |