宽带跳频频合器关键指标的分析、仿真与实现

Analysis and Realization of Solution for Broad Band Frequency Hopping Synthesizer

跳频通信是通信抗干扰的重要措施,跳频频率源是实现跳频通信的核心部件之一,低相位噪声和快速的频率转换锁定时间是跳频频率源的主要指标。总结了在宽带跳频频合器的设计中对相位噪声和锁定时间的分析方法和仿真结果,并采用基于DDS+PLL技术的AD9956芯片,制作了S波段宽带跳频频合器,实现了宽频带、低相位噪声和快速锁定性能。

FH（Frequency- Hopping） communication is a very important method of anti -jamming. The FH frequencY synthesizer is one of the kernel component that is used to realize FH communication. The low phase noise and fast frequency switch lock time are the most important target of FH frequency synthesizer. This paper summarizes the analytical method and simulation results in our design process about wide band FH synthesizer. Using DDS chip of AD9956 which is based on-the DDS/PLL technology to fabricate a wide band FH synthesizer in S band and realize the performance of wide band,low phase noise and fast lock.