應用於碟型天線饋源之L頻段螺旋天線設計

The Design of a L Band Helix Antenna to Apply to the Feed Source of the Dish Antenna

徐志榮(CHIH-JUNG HSU)

指導教授 ： 涂世雄

中原大學/工學院/電機工程研究所/碩士(2010年)

https://doi.org/10.6840/cycu201000502

摘要

我們提出一套新流程去設計一L頻段螺旋天線，將其應用於碟型天線饋源上，並使用低成本材料來設計螺旋天線，而且利用螺旋天線利於架設及搬移之便利性，以螺旋天線替換碟型天線之饋源，並應用於衛星訊號接收為主題。
在本篇論文中，我們提出幾個重點，第一部份首先針對材質的選用及依照螺旋天線理論與方程式，實施實作步驟以設計出L頻段螺旋天線，並利用無干擾實驗室各式儀表量測出天線相關數據，其實驗結果均符合碟型天線饋源之要求。因此第二部份我們使用所設計的L頻段螺旋天線架設於碟型天線上，替換成饋源使用，進行衛星訊號接收時全頻譜圖、單載波圖及天線場圖的量測與分析，在分析量測資料後，顯示我們的研究，其效率及成本皆優於傳統碟型天線。
在這篇論文中，我們將提出以下貢獻：
(1)本文所設計的L頻段螺旋天線，可在碟型天線故障時即時取代饋源，避免接收任務中斷，造成資料損失。
(2)L頻段螺旋天線安裝，無需考慮碟型天線大小及型式，可取代饋源使用，且效率較好。
(3)本文所設計之螺旋天線不需花費大筆金額即可完成天線製作，不但符合低成本效益，且易於安裝及拆卸。
最後，我們可以知道，我們提出的L頻段螺旋天線設計，可實際應用於碟型天線饋源，降低天線成本及提昇碟型天線效率進而增加通訊靈活度等優勢。

關鍵字

螺旋天線

並列摘要

We propose a new process to design an L band helix antenna and apply it to the feed source of the dish antenna. The cost of the materials used in our design is lower than the existent methods. Furthermore, our design can be applied to replace the feed source of the dish antenna for receiving the satellite signals since it can be easily installed and removed.
In this thesis, there are several main points. The first part of the thesis is about the chosen materials and the L band helical antenna design which is based on the helix antenna theory and relative equations to put it into practice steps. We use some kinds of instruments to measure data of the antenna in the non-disturb laboratory. The experimental results tell us that it meets the requirement of feed source of dish antenna. Hence secondly, we use our designed L band helix antenna as the feed source which installed on the dish antenna. Then, we use it to receive satellite signals in entire spectrograph chart, single carrier chart and antenna field pattern. After analyzing the measured data, it reveals that our scheme has batter performance on the effectiveness and cost than on the traditional dish antenna.

The contributions in this thesis are as follows:
(1) The design of L band helix antenna can be replaced as the feed source of the dish antenna when it is breakdown. It helps avoiding datum receiving interruption and losing them.
(2) The L band helix antenna’s installation does not consider the size and pattern of the dish antenna. It can be replaced as the feed source of the dish antenna and get better efficiency than it does on the dish antenna.
(3) This design of the helical antenna needs not a large amount of money to make the antenna completion. It is not only benefits from the low cost, but also install and disassemble easily.
Finally, we realized it can practically apply to on the feed source of dish antenna that we proposed the design of L band helix antenna. It acquired advantage of reducing dish antenna cost and raising the flexibility of communication.

並列關鍵字

Helix Antenna

參考文獻

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