陣列口徑外多層介質(zhì)加載問(wèn)題的簡(jiǎn)化處理
A SIMPLE WAY TO HANDLE THE PROBLEM OF LOADINGWITH MULTILAYERED DIELECTRIC SHEATHS OUTSIDETHE ARRAY APERTURE
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摘要: 正 (一)引言 陣列天線一般是由稱為單元的許多小天線組成的,由于是露天工作,它必須防雨、防塵和防潮。而天線罩的加入,陣列性能下降不應(yīng)太大。此外,以掃描為特征的相控陣,其性能是與掃描角緊密相關(guān)的,其變化規(guī)律在兩個(gè)主平面是相反的,如圖1所示。為了在要求的空域內(nèi)達(dá)到更好的阻抗匹配特性、達(dá)到寬角掃描和能量充分利用的目的,應(yīng)當(dāng)選擇這樣一種材料做天線罩:即當(dāng)波投射于該材料時(shí),它對(duì)波產(chǎn)生的電
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關(guān)鍵詞:
Abstract: In this paper the effects of dielectric sheet on the array antenna are described on the concept of element cell. The formulae suitable for the computer calculation are derived by the use of transmission line circuit theory. Useful results are obtained by the use of computer type-719, and the correctness of the results is discussed. The theoretical data are in agreement with experimental results obtained from the waveguide simulators. -
李祥林、姚以慈,矩形波導(dǎo)單元相控陣天線陣面的理論計(jì)算與設(shè)計(jì),中國(guó)電子學(xué)會(huì)天線年會(huì)報(bào)告(1979).[2]E. G. Magill and H. A. Wheeler, Proe. IEEE Trans. on AP, AP-14(1966), 49.[3]西安電訊工程學(xué)院,微波傳輸線,(1976), 26.[4]P. W. Hannan and M. A. Ralfor, Proe. IEEE Trans. on AP, AP-13(1965), 342. -
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