基于ADF4350的S频段锁相频率合成器设计

Design and Implementation of S-band PLL Frequency Synthesizer Based on ADF4350

频率合成器是现代通信系统中的一个重要组成部分,在数字通信、卫星通信、遥测遥控、雷达、导航等领域有着广泛应用。ADF4350是ADI推出的一款具有低相位噪声的宽带频率合成器。文中介绍了锁相频率合成技术的基本原理和性能指标,给出了一种利用ADF4350实现频率合成器的硬件结构和实现方法,并对其主要指标进行了测试,测试结果表明,该频率合成器表现出较好的散射水平和较低的相位噪声。

Frequency synthesizer is the key part of modem communications systems, which are widely used in digital communications, satellite communications, TF＆C, radar, navigation and other fields. ADF4350 is the broadband frequency synthesizer produced by ADI Co. with phase noise low. The basic principle and performance standard of PLL frequency synthesizer are introduced in this paper. A hardware structure for realizing frequency syn- thesizer based on ADF4350 and implementation methods are given, and the main indicators of the test.