金屬網格天線在超薄可撓基板上的應用

Demonstration of the Novel Ultra-Slim Flexible Glass as Substrate with Metal Meshed Antenna

曾家盈(Chia-Ying Tseng)

指導教授 ： 林晃巖

國立臺灣大學/電機資訊學院/光電工程學研究所/碩士(2016年)

https://doi.org/10.6342/NTU201602780

摘要

隨著科技的進步,人類對於資料訊息之傳播速度需求也日漸提升,而要發展 這樣的技術,需要介電係數與耗散因子低之材料,然本文採用之 Corning® Willow® Glass 為具有低耗散因子之特性。藉由在此基板上設計偶極天線以及八木宇田天線, 確認天線在此一新穎超薄可撓透明基板上應用之可行性,並利用凹版印刷方式印 製八木宇田天線,並證實此基板在天線應用上之可行性。在本文後段,進一步探 討在此基板上進行天線透明化之應用,藉由調整金屬線寬至 3 μm,網格寬度至 200 μm~300 μm,使天線達到透明的效果。此外,在調整金屬線寬與網格寬度達到透明 化效果之過程中,發現固定網格寬度下金屬線寬越窄中心頻率會有紅移之現象發 生,造成此結果之原因為填充因子下降時進入基板之電場較空氣多,因此等效折 射率上升,使得中心頻率下降。

關鍵字

天線 ； 可撓 ； 透明 ； 網格

並列摘要

Recently, with the greatly growth of multimedia and wireless communications, high data rate is required for the increasing data transmission of information. Considering the dielectric properties and losses, the demand for low dielectric constant (Dk) and low dissipation factor (Df, or loss tangent) material is urgent as the data rate and operating frequency increase. In this study, we used the low Df Corning® Willow® Glass as the substrate. By means of designing the dipole antenna and Yagi-Uda antenna on the glass, the glass has been demonstrated both in simulation and experiment for antenna application. All experiments were conducted by the gravure offset printing (GOP) method. In the latter half of this study, in order to have better transparency, the linewidth of the metal line is shrank to 3 μm and the space is extended in a range of 200~300 μm. In addition, when we fix the space and adjust the metal lines, the center frequency will shift to lower frequency as the metal lines becoming thinner. The reason why the center frequency shifts to lower frequency is that when the fill factor is smaller, the electric field prefers to enter into the substrate than the air, that is, the effective refraction index increases.

並列關鍵字

Antenna ； Flexible ； Transparent ； Mesh

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