一種新型寬帶電磁帶隙結(jié)構(gòu)
A Novel Broad-Band Electromagnetic Band-Gap Structure
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摘要: 該文研究了實現(xiàn)寬帶EBG(Electromagnetic Band-Gap)結(jié)構(gòu)的方法。仿真結(jié)果表明利用周期漸變技術(shù)可以明顯增加阻帶帶寬,進而采用單元尺寸加窗技術(shù)可以改善通帶和阻帶的平坦度。在該文的例子中,-20dB的阻帶帶寬增加了2096以上,3GHz以下的通帶插損小于0.4dB。制作了相應(yīng)的實際電路,實驗結(jié)果與仿真結(jié)果基本相符。
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關(guān)鍵詞:
- 光子晶體; 電磁帶隙; 周期線性漸變; 加窗技術(shù); 插損
Abstract: A method obtaining broad-band EGB(Electromagnetic Band-Gap) Structure is studied in this paper. The simulated results show that the band-width of band-gap is enlarged using method of changing period linearly, and the smoothness of pass band and band-gap are imprved using techniques of windowing units size. For the example presented in this paper, -20dB bandwithd of band-gap is increased by 20%, and the insertion loss is less than 04dB for pass-band below 3GHz. Several circuits are manufactured, and the measured results are basically accordant to simulated results. -
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