利用負導磁係數特性實現多頻帶斥濾波器

MULTI-STOPBAND FILTERS USING NEGATIVE PERMEABILITY MATERIAL

李勇德(Yung-De Li)

指導教授 ： 張知難

大同大學/電機資訊學院/通訊工程研究所/碩士(2007年)

摘要

本篇論文在研究人造材料-電磁禁帶週期結構，藉由穿透-反射法的材料量測技術，求出電磁禁帶週期結構之等效介電常數及等效導磁常數，可觀察到電磁禁帶週期結構之等效導磁常數在某一頻段為負值，並以共平面波導的饋入方式，藉以激發電磁禁帶週期結構，使其有電磁禁帶之效果，形成一帶斥濾波器，並改變電磁禁帶週期結構之尺寸大小，能使此濾波器產生多頻帶斥的結果。

關鍵字

負介質 ； 濾波器

並列摘要

Left-handed material is an artificial material. Wire structure causes effect negative permittivity. Split ring resonator causes effect negative permeability. In this paper, we calculate the effective permittivity and effect permeability through Transmission-Reflection method.
Several coplanar waveguide feed band-stop filters were made. We etched split ring resonators on transmission line so that we can take advantage of negative effective permeability characteristic to form deep skirt in the stop band.

並列關鍵字

negative permeability ； filters

參考文獻

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