10～15GHz宽带捷变源设计

Design on 10～15 GHz Broadband Agile Source

为了提升电子系统的性能,满足当前对宽频带捷变源的需求,实现频率源频率高、频带宽和跳频速度快的功能,提出了一种电压预置与锁相环结合的快速跳频的方法。设计采用快速鉴频鉴相器,鉴相频率较高,可以提高PLL的带宽,从而减少锁定时间;在频率改变时,利用电压预置技术将频率直接拉入锁相环的快速捕获频带,减少整个捷变源的锁定时间。给出了理论分析、ADS仿真、设计实现和调试等过程,实现了输出频率10～15 GHz、捷变时间10μs的技术指标。

In order to improve the performance of electronic system,meet the current demand for broadband agile source,and realize the functions such as high frequency,broadband and fast frequency-hopping,this paper puts forward a fast frequency-hopping method which combines the voltage presetting technology with the PLL technology.The fast-speed phase-frequency detector is adopted to improve the PLL bandwidth and reduce locking time.While the frequency changing,the voltage presetting technology pull the frequency into the fast capture frequency band of PLL to reduce the locking time of agile source.This paper provides the process of theoretical analysis,ADS simulation,design implementation and debugging,and realizes the technical specifications such as output frequency of 10~15 GHz and agile time of 10μs.