摘要
介绍了一个应用正交调制的混合式频率合成器设计方案，提出了一种用正交调制实现小步进的新方法。用本方案设计的L频段频率合成器与用传统方案设计的相比，体积大为缩小，且相噪有较大改善。实践证明，这是一种有效的、极具推广价值的电路形式。
This paper introduces a DDS＋PLL frequency synthesizer design in which I＆Q modulation has been used to get fine resolution. In this way, we can get a fine-resolution synthesizer with lower phase noise and in smaUer volume compared with the traditional method.This new circuit form has been proved to be very effective and spreadable by the experimentations and applications.
出处
《通信对抗》
2007年第2期58-61,共4页
Communication Countermeasures
关键词
正交调制
频率合成器
相位噪声
I＆Q modulation
frequency synthesizer
phase noise
