作　　者： ; ;

机构地区： 中山大学信息科学与技术学院无线电电子学系

出　　处： 《微波学报》 1993年第1期48-53,共6页

摘　　要： 我们研制了一种8毫米波变张角、半径突变的多模圆锥馈源。计算出其模比并推导出其辐射方向图公式;给出其在两个主平面——E平面与H平面上的辐射方向图和波束场分布特性的测试结果以及电压驻波比VSWR的测量结果;同时给出频带和旁瓣特性。分析与测试共同表明,在34.5GHz～37GHz频带里,该多模馈源的辐射图在大于24dB范围内获得幅度等化且不出现旁瓣,因此具有一定的应用价值。 A 8mm wave multimode conical feedhorn in changing flare angles and a step of radius has been developed. Its moderadios are calculated and the formulas of its radiation patterns are derived. The measurement results of patterns, field distribution characteristics of wave beam in two principal planes-H plane and E plane and the voltage standing wave ratio VSWR,and the properties of bandwidth and sidelobe are given. Theoretical analyses and measurements show that in the range of frequency of 34. 5GHz to 37GHz,its radiation patterns have been equalized in amplitude within greater than 24dB, where no sidelobe exists. The feedhorn is thus of certain practical value.

关 键 词： 极高频 多模圆锥馈源 反射镜天线

领　　域： [电子电信]