以基於等效電路之數值方法分析頻率選擇表面

Analysis of a frequency selective surface by the equivalent circuits

歐祿益(Louis-Charles Olivier Ippet-Letembet)

指導教授 ： 陳士元

共同指導教授 ： Nathalie Raveu(Nathalie Raveu)

國立臺灣大學/電機資訊學院/電信工程學研究所/碩士(2019年)

https://doi.org/10.6342/NTU201902447

摘要

本論文的目的在於利用波動概念迭代處理法來分析一款頻率選擇表面。藉由不連續處橫向電磁場的連續方程式，該方法可得到連結頻率選擇表面之結構參數及其散射矩陣之關係式。據此，我們可以進行兩種分析設計。首先，從給定的結構參數可得到其散射矩陣；此外，更可合成出符合目標散射矩陣之結構參數組合。透過與HFSS模擬之結果比較，吾人分析並驗證了利用波動概念迭代處理法所得到的結果。

關鍵字

數值方法分析頻率選擇表面

並列摘要

The objective of the present study is to analyse numerically a frequency selective surface using the Wave Concept Iterative Process Method (WCIP). By applying continuity equations between transverse electromagnetic fields at discontinuities, this method provide equations that link the structure's geometric and physics parameters to the S parameters. Consequently, two different reasoning can be conducted. First, an analysis, which consists in obtaining the S parameters, knowing the structure's geometric parameters. Second, a synthesis which consists in finding the optimum geometric parameters to fulfil specifications on the S parameters. The results obtained with the WCIP are analysed and validated by comparison with HFSS results.

並列關鍵字

Frequency selective surface ； numerical analysis

參考文獻

[1] Nathalie Raveu, Olivier Pigaglio, extbf{Resolution de problemes Hautes Frequences par les schemas equivalents ,Cours et Exercices corriges} ('Resolution of electromagnetic problems in high frequencies by the equivalent circuits, Courses and corrected Exercises'), Cepadues-editions april 2012, ISBN : 978.2.36493.013.1

[2] Robin Jeanty, extbf{An enhanced Slot loop Antenna using a Metasurface and varactors}, Master Thesis, National Taiwan University, 2017.

[3] Euloge Budet Tchikaya, extbf{Modelisation electromagnetique des surfaces selectives en frequence finies uniformes et non-uniformes par la technique de changement d'echelle (SCT)} ('Electromagnetic modelling of finite uniform and non-uniform frequency selective surfaces by the Scale Changing Technique '), PHD Thesis, National Polytechnic Institute of Toulouse INP ENSEEIHT, 2010.

[4] Etienne Perret, extbf{Application de l'approche par changements d'echelle aux circuits planaires hyperfrequences} ('Application of the scale changing approach to hyperfrequency planar circuits '), PHD Thesis, National Polytechnic Institute of Toulouse INP ENSEEIHT, 2005.