摘要
介绍了HITTITE公司一款具有超低相位噪声基底的鉴频鉴相器HMC440在C波段锁相频率合成器中的应用。其特点是鉴相频率高,噪声基底非常低,他集成数控程序分频器,是低相位噪声锁相频率合成器的关键部件。该器件在要求超低相位噪声的载波或本振的地方,如:卫星通信系统、军事通讯系统、Sonet时钟发生系统等,有着很好的应用前景。
This article introduces an typical application of HMC440 which is an ultra low phase noise floor phase frequency detector produced by HITTITE. It is provided with high detecting frequency, ultra low phase noise floor and a digital programmable frequency divider integrated in the chip. And it is the key component in a low noise phase lock loop frequency synthesizer. In the systems such as： satellite communication systems, military communication systems,Sonet clock generation systems, asked for ultra low noise Carrier Wave（CW） and Local Oscillator（LO）,this component has a good prospect of application.
出处
《现代电子技术》
2007年第13期38-39,42,共3页
Modern Electronics Technique
关键词
鉴频鉴相器
低相位噪声
锁相频率合成器
杂散抑制
phase frequency detector
low phase noise
PLL frequency synthesizer
spur restraint
