研究生: |
鍾志其 Jung, Jr- Chi |
---|---|
論文名稱: |
設計模擬並實驗利用ITO玻璃製作透明微帶天線 Design, Simulation and Experiment of Transparent Microstrip Antennas Fabricated by ITO Glass |
指導教授: |
洪健君
Hung, Chien-Chun 楊世銘 Yang, Shih-Ming |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 航空太空工程學系 Department of Aeronautics & Astronautics |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 英文 |
論文頁數: | 80 |
中文關鍵詞: | 微帶天線 |
外文關鍵詞: | microstrip antenna |
相關次數: | 點閱:52 下載:6 |
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微帶天線具有許多優點,例如低重量、低剖面與非平整面上應用之特性。微帶天線一個最大的特點就是,天線與饋入線可以在同一基材上以蝕刻方式來完成。在傳統上,微帶天線通常是被使用在軍事用途上,例如被裝置在飛機的機身上。因此,為了使微帶天線更能廣泛地應用在日常生活的產品中,本論文提出了利用ITO玻璃來製作透明微帶天線的設計與分析。當微帶天線能夠變成透明時,便能使之運用在各種民生產業上,例如手機螢幕,筆記型電腦螢幕,甚至是在汽車前面的擋風玻璃板上。
在一開始,導電率與電阻率的關係式首先要推導出來,而後本文再提出在工作頻率2.4GHz截斜角型微帶天線的設計步驟與分析。從125、130、135、140、145與150歐姆中,設計與分析最能與天線匹配的第一條饋入線(feedline-1)阻抗,然後,調整其長度使阻抗的虛部為零。從模擬的結果可以知道,較厚的玻璃板(2.2mm)能夠減少能量的損耗,並且在工作頻率2.4GHz中能得到較好的頻寬(2.83 %)。因此,利用微機電的蝕刻方式,去實際製作2.2mm厚的截斜角微帶天線,最後再分析與討論測量出的結果。
Microstrip antennas have many the advantages of light weight, low profile and conformability. One of the most attractive features of the microstrip antennas is that the patch and feed line are fabricated by etching method on the same dielectric substrate. In traditional, microstrip antennas are usually utilized to the military use, as they can be mounted on aircraft fuselage. This thesis presents the design and analysis of transparent microstrip antennas fabricated by ITO glass. Transparent microstrip antennas can be used cell phones, notebooks, and windscreens of cars.
The design procedures of truncated-corners microstrip antennas operation at 2.4 GHz are presented. Design and analysis of feedline-1 impedance from 125, 130, 135, 140, 145 and 150 ohms are matched with the patch, and the length of the feedline-1 also is tuned to make the imaginary part of impedance become zero. Simulation results show that thin glass substrate (2.2mm) can decrease the loss and achieve better bandwidth (2.83 %) at 2.4 GHz. A truncated-corners microstrip antenna on 2.2mm-thickness glass is fabricated and measured, but the experimental results do not agree well with the simulation results because of the size of the ITO glass plate.
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