一種拓展波紋喇叭帶寬的新方法負(fù)導(dǎo)納區(qū)的應(yīng)用
A NEW METHOD FOR EXTENDING THE OPERATION FREQUENCY BANDWIDTH OF CORRUGATED HORNS BY USING THE NEGATIVE ADMITTANCE REGION
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摘要: 正 通常設(shè)計的波紋喇叭都工作于正導(dǎo)納區(qū),其輻射性能的頻帶比理論上可達到2:1;但若考慮到要匹配性能好、輻射圖的軸旋轉(zhuǎn)性能優(yōu)良(即交叉極化峰值電平低),其頻帶比實際上大約可得到14:1。這不能滿足頻譜復(fù)用的衛(wèi)星通信地面站對天線的要求,它需要頻帶比為6425:3700=1.736:1。為了解決這一問題,我們嘗試?yán)秘?fù)導(dǎo)納區(qū)來拓展波紋喇叭的工作帶寬
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關(guān)鍵詞:
Abstract: A new method is presented for extending the operation frequency bandwidth of corrugated horns by using the negative admittance region, and it is verified by experiments. -
水沢丕雄,武田文雄,別段信一,電子通信學(xué)會論文誌(B), 56-B (1973), 14.[2]章日榮,電子學(xué)報,1983年第5期,第50頁. -
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