【摘要】 本文叙述了为远洋导航雷达所研制的一台波导开槽天线,该天线系3cm波导窄边开槽天线阵,中心频率为9375MC,阵元等间距,电流分布为泰勒分布,共156个阵元。整个天线置入限制垂直波束的喇叭内。阵元前放置截止式波导滤波器,用以消除互耦和抑制交叉极化。天线用玻璃钢外壳封装。设计指标为:主瓣宽度39′,边瓣电平-35dB,增益35dB。实际达到的指标为:主瓣宽度35′边瓣电平-26.5dB,增益35dB,与英国Decca公司同类产品相比基本一致,个别指标略有超过。更多还原

【Abstract】 In this investigation it follows as:the waveguide slot antenna for ocean ship navegation radar is researched by us.This antenna system is a 3cm waveguide slot array with mid-frequency 9375MC,slots at the narrow side of waveguide and the uniform spaced elements of array, whose current distribution is Taylor distribution,the sum total of elements are 156.The antenna is put into a horn in order to restrict the vertical wave beam.In front of every element, the cut-off waveguide filter is set in order to cancel out the inter-coupling and reject cross palarization. The antenna is enclosed in a glass fibre reinforced plastic shell.The designing datum are shown as follows:width of main lobe 39′ ,level of side lobe-35riB,gain factor 35dB and the practical datum measured are width of main lobe 35′, level of sid lobe -26.5dB,gain facter 35dB.These parameters are basically coincide with similar product of the Decca company of England,but few surpass.更多还原