高速跳频接收机方案设计

Design of High Speed Frequency Hopping Receiver Scheme

随着干扰技术的快速发展,以及通信系统对抗截获和抗干扰能力需求不断提高,高速跳频接收机的需求不断增多。高速跳频接收机对换频时间要求比较苛刻,这是高频跳频接收机设计面临的主要问题。文章从原理上对几种常用接收机架构进行了对比和分析,指出了制约接收机换频时间性能提升的主要原因,提出了基于射频直接采样架构的高速跳频接收机解决方案,对方案的基本架构和设计思路进行了阐述,并对方案的关键器件性能、达到的换频时间、方案设计要点和关键指标测试情况进行了说明,可为同类通信产品的设计提供参考。

With the rapid development of interference technology and the increasing demand of communication system for anti-interception and anti-interference capability,the demand of high-speed frequency hopping receiver is increasing.High-speed frequency hopping receivers require more rigorous frequency conversion time,which is the main problem in the design of highfrequency frequency hopping receivers.This paper makes a comparison and analysis of several common receiver architectures in principle,points out the main reasons that restrict the improvement of frequency conversion time performance of the receiver,puts forward a solution for high-speed frequency hopping receiver based on RF direct sampling architecture.It describes the basic architecture and design ideas of the scheme,and explains the performance of key components of the scheme,the achieved frequency conversion time,the design essentials of the scheme and the testing situation of key indicators.It can provide reference for the design of similar type of communication products.