磁場削弱比 的英文怎麼說

中文拼音 [chǎngxiāoruò]
磁場削弱比 英文
magnetic field weakening ratio
  • : 名詞1. [物理學] (磁性; 能吸引鐵、鎳等的性質) magnetism 2. (瓷) porcelain; china
  • : 場Ⅰ名詞1 (平坦的空地 多用來翻曬糧食 碾軋穀物) a level open space; threshing ground 2 [方言] (...
  • : 削動詞1. (用刀斜著去掉物體的表層) pare [peel] with a knife 2. (乒乓球的一種打法) cut; chop
  • : Ⅰ形容詞1 (氣力小; 勢力差) weak; feeble 2 (年幼) young 3 (差; 不如) inferior 4 (接在分數或...
  • : Ⅰ動詞1 (比較; 較量高下、 長短、距離、好壞等) compare; compete; contrast; match; emulate 2 (比...
  • 磁場 : [物理學] (傳遞運動電荷或電流之間相互作用的物理場) magnetic field
  • 削弱 : weaken; cripple; relax; relaxation; put a brake on; deadened; abate
  1. A patch antenna with air holes in the substrate has been designed. the finite - difference time - domain ( fdtd ) method together with the perfectly matched layer ( pml ) boundary treatment has been used to study the performance of the antenna. it is shown that the surface waves are significiently suppressed, the frequency bandwidth is improved, the sidelobe levels are reduced and consequently the gain in the forward direction is improved by 14 db ( about 4 db higher than the value reported previously )

    設計了一種基底鉆周期圓孔結構的電(光子)晶體貼片天線,用fdtd方法並結合pml吸收邊界條件對該天線進行了研究,結果表明本文所設計的基底鉆孔型電晶體貼片天線取得了多方面的性能改善,與普通天線相,基底中的表面波受到很大抑制,天線的帶寬增加,遠方向圖上天線的旁瓣和背瓣被明顯,向前輻射的增益由原來的12db增加到26db ,增加了14db ,文獻上報道的gonzalo等人的研究結果提高了4db 。
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