L波段高隔离度无人机系统微波前端设计

Design for the RF front end of UAV with high isolation in L band

提出了一种新型L波段无人机(UAV)系统微波前端的电路设计方法。通过借鉴和简化卫星通讯系统中"环形器+滤波器"的多工器设计,替代了之前无人机系统中腔体或者介质双工器的常规方案,采用ADS软件设计制作了微波前端并进行了相关试验和分析。结果表明,该设计方法具备了一体化设计和低成本等特点。所设计的微波前端已经应用在了超近程无人机系统上。

A novel circuit design method of microwave front-end in L Band for UAV （unmanned aerial vehicle ） was presented. The method used and simplified the multiplex design method of ＂circulator＋filter＂ in satellite communication system and replaced the custom design in UAV system cavity or dielectric duplexer. The RF front end was designed by using ADS software and relative experiment and analysis were conducted. Results show that the design method possesses properties of whole design and low cost and designed RF front end is already used in short-range UAV.