適于一維相控陣寬角掃描的非對稱單脊波導(dǎo)裂縫線源
ASYMMETRIC RIDGE WAVEGUIDE SLOT LINEAR ARRAY FOR ONE DEMENSION IDE SCAN-ANGLE PHASED ARRAY
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摘要: 非對稱單脊波導(dǎo)裂縫線源是一種新型相控陣天線輻射單元。由該種單元垂直放置構(gòu)成的平面相控陣天線在水平面可實現(xiàn)寬角(60)掃描,在波束掃描時,還可以避免寄生副瓣的出現(xiàn)。同時,該種單元本身在垂直面易于實現(xiàn)較低的副瓣電平。本文從理論和實驗上對非對稱單脊波導(dǎo)裂縫陣天線進(jìn)行了研究,解決了該種線源設(shè)計過程中的基本理論和關(guān)鍵技術(shù)。十六單元樣品線源遠(yuǎn)場實驗結(jié)果與理論值的一致性說明了本文的理論分析和實現(xiàn)途徑是正確有效的。Abstract: An asymmetric ridge waveguide slot array is a novel linear array radiating element for phased array antenna.The phased array can scan to wide angle (60)in azimuth,and can eliminate the secondary beams when the beam is scanned, which is consisted of many vertical asymmetric ridge waveguide slot linear array elements. And at the same time, the linear array can be easy to get low side-lobe. The theoretical and experimental studies for the linear array are presented in this paper. The basic theory and key technique for the linear array are performed on which systematic design procedure can be based.A constructed sixteen-slot array is tested under the far field, the results in agreement with the theory validate the theoretical analysis and the design proceduce for collinear slot array of asymmetric ridge waveguide.
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Green J,Shnitkin H.Asymmetric ridge waveguide radiating element for a scanned planar array.IEEE Trans.on AP,1990,AP-38(8):161-165.[2]Elliott R S.The design of small slot arrays. IEEE Trans.on AP,1978,AP-26(2):214-219.[3]魯加國,樊德森.非對稱單脊波導(dǎo)的積分方程法分析.微波學(xué)報,1998,14(2)：108-115.[4]魯加國,吳雙桂,張祖稷.非對稱單脊波導(dǎo)孤立縫導(dǎo)納.無線電通信技術(shù),1998,24(4)：56-59.[5]魯加國,吳雙桂,陳嗣喬.非對稱單脊波導(dǎo)裂縫陣天線分析.電波科學(xué)學(xué)報,1998,13(4)：388-392. -
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