A 4MM-wave composite mode multimode conical feedhorn

作者：Lin ZS^*; Du ZM; Chen SN

来源：International Journal of Infrared and Millimeter Waves, 1996, 17(10): 1749-1760.

DOI：10.1007/BF02069586

• composite mode
• multimode conical feedhorn
• mode ratio
• radiation pattern
• axisymmetric
• automatic measurement system

A 4mm-Wave composite rode multimode conical feedhorn has been developed. Its mode-ratios are calculated and its formulas of the radiation patterns are derived. The measurement results of one and two dimension radiation patterns, measured by the automatic measurement system which we had researched, and the properties of band width and sidelobe are given. Theoretical analyses and measurements show that at the centre frequency 69.1 GHZ, down to -23dB, the radiation pattern is rotationally symmetric, in this range there is not any sidelobe existing, the band width is 4.5 GHZ. The multimode feedhorn is thus of certain practical using value.

• 出版日期1996-10
• 单位中山大学