一种多频宽带多模馈源的设计  

Design of a Multi-frequency Broadband Multi-mode Feed

作　　者：张宇 渠芳芳 葛文振 ZHANG Yu;QU Fang-fang;GE Wen-zhen(The 39th Research Institute of CETC,Xi'an 710065,China;Shaanxi Key Laboratory of Antenna and Control Technology,Xi'an 710065,China)

机构地区：[1]中国电子科技集团公司第三十九研究所,西安710065 [2]陕西省天线与控制技术重点实验室,西安710065

出　　处：《微波学报》2023年第4期66-69,77,共5页Journal of Microwaves

摘　　要：为满足工程需求、实现天线的多频收发共用性能,文中基于模式匹配法设计了一款新型的多频宽带多模馈源。该馈源集S/X/Ka频段于一体,其中X/Ka多频段馈源采用新型的X/Ka宽带多模喇叭及X/Ka、Ka/Ka频段宽带分波器。与已有的常规馈源相比,该馈源在Ka频段拓展了带宽,带宽达到57%,在天线应用中各频段辐射效率也大幅提高。采用模式匹配法进行设计,大大缩短了设计时间并保证了设计精度。该多模馈源喇叭对加工精度要求不高,易于制造,在Ka频段有很大优势。目前该馈源已应用于工程中,各项性能指标均优良。In order to meet the engineering requirements and realize the multi-frequency transceiver sharing performance of the antenna,this paper proposes a new multi-frequency broadband multi-mode feed based on the mode-matching technique.The feed integrates S/X/Ka bands.The X/Ka multi-band feed adopts the new X/Ka broadband multi-mode horn and the X/Ka and the Ka/Ka band broadband demultiplexer.Compared with the existing conventional feeds,the bandwidth of the Ka-band is expanded,the bandwidth reaches 57%,and the efficiency of each frequency band has also been greatly improved.At the same time,the feed is designed based on the mode-matching technique,which greatly shortens the design time and ensures the design accuracy.Moreover,the multi-mode feed horn does not require high processing accuracy and is easy to manufacture,so it has great advantages in Ka-band.At present,the feed has been used in engineering,and all kinds of its performance are excellent.

关 键 词：多频收发共用 模式匹配法 宽带多模喇叭 宽带分波器 

分 类 号：TN927.2[电子电信—通信与信息系统]