基于多环锁相宽带细步进频率合成器的设计  

Design of a wide band and small step frequency synthesizer using multi-loop technology

作　　者：张文锋[1] 刘武广[1] 宋翔宇[1] 

机构地区：[1]中国西南电子设备研究所,四川成都610036

出　　处：《电子设计工程》2013年第6期142-144,151,共4页Electronic Design Engineering

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.

关 键 词：多环技术 锁相环 宽带 细步进 低杂散 

分 类 号：TN743[电子电信—电路与系统]