摘要
介绍了一种低杂散的小型化X波段频率综合器。基于SMT工艺,采用间接频率合成技术,使用锁相环、压控振荡器芯片、3阶无源环路滤波器和前置分频器实现频率综合。介绍了小型化的设计思路。仿真和测试结果表明,设计的频率综合器输出频率为9.2GHz,相位噪声优于-87dBc/Hz@10kHz,杂散优于-87.5dBc。该电路具有相噪低、杂散低、结构简单等优点,可广泛应用于通信、雷达等领域。
A practical miniaturized low spur X-band frequency synthesizer based on SMT was presented. In this design, phase-locked loop, voltage controlled oscillator, 3^rd-order passive loop filter and prescaler were used to realize frequency synthesis. Simulation and test results showed that the frequency synthesizer had an output frequency of 9. Z GHz, a phase noise less than -87 dBc/Hz @ 10 kHz, and a spur below -87. 5 dBc. With low phase noise, low spur and simple structure, the circuit is applicable for communication and radar systems.
出处
《微电子学》
CAS
CSCD
北大核心
2013年第4期513-515,共3页
Microelectronics
关键词
小型化
锁相环
频率综合器
Miniaturization
Phase-locked loop
Frequency synthesizer
