基于双环X波段低相噪频率合成器的设计与实现

Design and implementation of X-band low phase noise frequency synthesizer using dual-loop technology

摘要:

基于相位噪声特性，对数字锁相式频率合成器进行了研究和分析。在对比传统单环锁相技术的基础上，介绍了一种双环技术的X波段低相噪锁相式频率合成器。在满足小频率步进、低杂散的情况下，设计所得到的X波段频率合成器其绝对相位噪声≤-100 dBc/Hz@1 kHz。

Abstract:

The digital Phase Locked Loop(PLL) frequency synthesizer technology is researched and analysed based on phase noise performance. An X-band PLL frequency synthesizer based on dual loop technology is introduced in contrast to conventional single locked loop technique. This design features small frequency step and low spurious characteristics with phase noise below -100 dBc/Hz@1 kHz.