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兔子 asked in 社會與文化語言 · 1 decade ago

~~一段有關天線的原文翻譯~~有把握翻譯者請進!!

這是從翁金輅教授編著的微帶天線設計中擷取下來的文章,想煩請具有天線背景且英文又很好的大大幫我翻譯一段~謝謝!!

A new design for compact triangular microstrip antennas with a Y-shaped slot for CP radiation has been reported. The Y-shaped slot is centered in the triangular patch ,with its upper two arms facing either the triangle tip or the bottom of the triangular patch. It is expected that, due to the presence of the Y-shaped slot in the patch, the excited patch surface current path is lengthened and thus the resonant frequency of the microstrip patch is reduced. Furthermore , it is found that , by selecting a proper size of the Y-shaped slot , two near-degenerate orthogonal modes with equal amplitudes and a 90o phase difference for CP operation can be excited using a single probe feed ; that is , compact CP operation of triangular microstrip antennas can be obtained.

As shown in Figure 5.9 , the upper two arms of the Y-shaped slot are of equal length ya and its lower arms has a smaller length yb (ya > yb). By choosing proper arms lengths (ya , yb) of the Y-shaped slot and placing a single probe feed at the edge of its lower arm , compact CP operation of the triangular microstrip antennas can be obtained. The feed positions at points A and B in the figure , both a distance yp from the patch center , are for right-hand and left-hand CP operations , respectively. The case with right-hand CP operation is studied here ; that is , the probe feed is placed at point A.

4 Answers

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  • 1 decade ago
    Favorite Answer

    一個新設計的三角形微帶天線外型為Y狀的槽孔用來輻射圓極化已經被報告出來了。Y形狀的槽孔在三角形貼片天線的中間,它上方有兩個臂面對著三角形貼片天線的頂端或底端。根據期待,由於Y形狀槽孔在貼片天線裡,被激發的貼片天線面電流路徑變長所以微帶線共振頻率會變小。除此之外,發現到,選擇一個適當Y形狀槽孔的大小,兩個退化垂直的模態有著相同大小和90度相位差的圓極化操作可以被激發但只使用一個探針來饋電;那就是,在三角形微帶線可以得到緊密的圓極化操作。如圖5.9,Y狀槽孔上面的兩個臂是相同長度ya而且下面兩個臂有較小的長度yb。選擇適當的Y狀的臂長度(ya , yb)和放置單一的探針饋電在較小弊的邊緣,緊實的圓極化操作在三角形微帶天線可以得到。饋電位置在圖上的A和B,兩個的距離yp是從中間開始算,個別是給右手圓極化和左手圓極化操作,在這可以讀到右手圓極化操作的case;也就是在A點放置探針饋電

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    有些專有名詞我是根據大陸的翻譯,繁體的天線書籍很少。

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