摘要
结合数字式频率合成器（DDS）和集成锁相环（PLL）各自的优点，研制并设计了以DDS芯片AD9954和集成锁相芯片ADF4113构成的高分辨率、低杂散、宽频段频率合成器，并对该频率合成器进行了分析和仿真，从仿真和测试结果看，该频率合成器达到了设计目标。该频率合成器的输出频率范围为594～999MHz，频率步进为5Hz，相位噪声为-91dBc／Hz@10kHz，杂散优于-73dBc，频率转换速度为520μs。
By taking advantages of the Direct Digital Synthesizer （DDS） and Phase Locked Loop（PLL）, a low spurious, wide band,high resolution triple tuned type frequency synthesizer with AD9954 and ADF4113 is designed. The results which are the simulated data and the measured results on finished product indicate that the technology can obtain its goal. Its specifications show as following： output frequency range 594- 999 MHz, step 5 Hz, phase noise -91 dBe/Hz@ 10 kHz, SFDR -73 dBc,hopping time 520 μs.
出处
《现代电子技术》
2009年第5期90-92,共3页
Modern Electronics Technique
