某雷达频率综合器中LDO的选择和使用  

Selection and Application of LDO in Frequency Synthesizer for Certain Radar

作　　者：袁华 刘玉清 邢钉凡 王小林 

机构地区：[1]驻广元地区军代室,四川广元628017 [2]总装备部重庆军代局,重庆400060 [3]零八一电子集团公司,四川广元628017

出　　处：《四川兵工学报》2011年第6期54-56,共3页Journal of Sichuan Ordnance

摘　　要：针对某雷达频率综合器锁相环电路、RF收发器、DAC对电源噪声非常敏感,若直接采用开关电源供电,将造成电路性能大幅度下降的问题,采用了LDO改善上述电路。以某雷达频率综合器为例,探讨了LDO在大带宽范围实现高电源抑制比和低噪声的相关设计。Aimed at that they are very sensitive to the phaselocked loop circuit,RF transceiver and DAC for power noise of frequency synthesizer of certain radar,and if the power was supplied by switch power,then it will result in fall of circuit performance substantially,and therefore LDO was adopted to improve the above circuits.In the paper,it took the frequency synthesizer of certain radar as an example,explored the related design of LDO to realize the rejection ratio of high power and the low noise in large band width rage.

关 键 词：LDO 高电源抑制比 低噪声 

分 类 号：TN952[电子电信—信号与信息处理]