縱向?qū)щ娨砥帘温菪€結(jié)構(gòu)的色散計算
THE CALCULATION OF DISPERSION CHARACTERISTICS FOR AN ACTUAL HELIX STRUCTURE WITH LONGITUDINALLY CONDUCTING VANE
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摘要: 本文采用螺旋帶模型,綜合考慮了介質(zhì)、縱向?qū)щ娨砥帘瓮布皩?dǎo)絲尺寸對結(jié)構(gòu)色散的影響。導(dǎo)出了設(shè)計公式,與實測結(jié)果相當(dāng)符合。 當(dāng)R/S1.1,S/1.5時,相速理論值的誤差在5％以下。提供了通用設(shè)計計算曲線,可供工程設(shè)計之用。
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關(guān)鍵詞:
Abstract: This paper uses the tape helix model and considers the effects of dielectric, axially conducting shield and wire size on dispersion characteristics for the helix structure with longitudinally conducting vane. The actual dielectric rods are replaced by an equivalent dielectric circle. The formula of dispersion characteristics for this type of helix can be deduced from electromagnetic theory. A comparison with experimental data of references [3, 7] shows that they are very close.When the ratio between shield inner radius R and vane inner radius S is larger than 1.1 and the ratio betwenn vane inner radius S and helix mean radius a is smaller than 1.5, the difference between the theoretical value of the phase velocity and experimental values is within five percent. The general design curves have been calculated by computer. They can be used for the design and calculation of this type of helix structure in actual engineering practice. -
S. F. Faik, IEEE Trans. on ED, ED-16(1969),1010.[5]陸鐘柞,超寬頻帶行波管的理論基礎(chǔ)和計算,南京工學(xué)院科研報告,1979.[6]陸鐘柞,縱向金屬條加載螺旋線的濾波性質(zhì)和理論分析,南京工學(xué)院科研報告,1979. -
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