出版社：Society for Microwave Technique, Technologies and Systems, Serbia and Montenegro IEEE MTT-S Chapter
摘要：This paper presents the design and development of new feed horn for spacecraft reflector antenna. Predicted RF performances of the feed systems agree with respective measured result with small deviation. Some issues related to C-band feed system such as impact of TM 01 mode on cross-polarization and its suppression employing a TM 01 mode-suppressor section between horn and ortho-mode transducer (OMT), impact of horn outer structure such as feed-strut interface on RF performance are investigated in this contribution. The outer feed structure (such as feed-struts interface) degrades cross-polar level of the feed. A compact and light-weight Ku-band plane-walled multi-mode horn with good RF performance has been devised and developed by judicious combination of stepped section preceded by 4-node spline-profiled section
