摘要
为了满足宽频段、细步进频率综合器的工程需求，对基于多环锁相的频率合成器进行了分析和研究。在对比传统单环锁相技术基础上，介绍了采用DDS＋PLL多环技术实现宽带细步进频综，输出频段10-13GHz，频率步进10kHz，相位噪声达到-92dBc／Hz@1kHz，杂散抑制达到-68dBc，满足实际工程应用需求。
To meet the requirements of wide band and small step,the frequency synthesizer based on multi-loop technology is analysed and researched. The frequency synthesizer using DDS＋PLL technology is introduced in contrast to conventional single locked loop technique, the output frequency is 10-13 GHz, the frequency step is 10KHz, the phase noise is -92 dBc/Hz @IKHz and the spurious suppression ratio is -68 dBc. It can meet the needs of project practically.
出处
《电子设计工程》
2013年第6期142-144,151,共4页
Electronic Design Engineering
关键词
多环技术
锁相环
宽带
细步进
低杂散
multi-loop technology
PLL
wide band
small step
low spur
