由共振腔微擾法研究材料介電性質

Study of Material Dielectric Properties by the Cavity Perturbation Method

林詩猛(Shih Meng Lin)

指導教授 ： 朱國瑞

國立臺灣大學/理學院/物理研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.02468

摘要

腔體微擾法是廣泛被應用在實驗上的量測介電係數的方法。這篇研究目的是探討腔體微擾法之工作原理以及利用微擾法設計出有效的介電係數量測系統。這篇論文分成模擬和實驗兩個部分。透過Ansoft High Frequency Structure Simulator (HFSS)的計算探討系統在不同邊界條件下的表現(例如：球形樣品、不同方向放置的薄樣品)，以及介電性質與電極化的的關係；利用網路分析儀對鐵氟龍進行實驗，並且佐以模擬計算之結果以校正系統。最後利用已較正的系統量測未知性質的樣品，將共振頻率的改變結果以HFSS進行匹配，得到未知樣品的介電係數。

關鍵字

材料介電系數量測 ； 共振腔微擾 ； 高頻結構模擬(HFSS)

並列摘要

Perturbation method is a well-known method to measure dielectric constant. Objective of this research is to discuss physical principle of perturbation theorem and design measuring systems by the principle. This research can be divided into two parts. We use “ Ansoft High Frequency Structure Simulator (HFSS)”to understand physical principle by testing system under variety boundary condition and check relationship between dielectric property and polarization, then adjust experimental system with standard sample(Teflon) by network testing. Lastly, we apply adjusted system on experiment to measure dielectric constant of unknown material.

並列關鍵字

Dielectric Measurement ； Cavity Perturbation Method ； High Frequency Structure Simulator

參考文獻

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