| 1. | Secondly , introduce the frequency synthesis technology
其次，介绍了频率合成技术。 |
| 2. | The hybrid frequency synthesis technology dds + pll has many advantages
Dds + pll频率合成方法有很多优点。 |
| 3. | The purpose is to realize the wide - band , high - speed , low - phase - noise and low - cost frequency synthesis in l band
其主要要求是实现l波段宽带、快速、低相噪和低成本的频率合成器。 |
| 4. | Dds ( direct digital frequency synthesis ) can just solve this problem , yet the output has an upper bound and high wideband spurs
Dds (直接数字频率合成)的出现恰好可以弥补这一缺陷,但是它输出频率上限太低,宽带杂散大。 |
| 5. | Single manner of frequency synthesis can have perfect effect on certain target . but no single one can meet all the technology requirements
单个的频率合成方式都可以在某些指标上获得理想的效果,但没有一种方式可以满足所有的技术要求。 |
| 6. | The synthesizer with the low phase noise , highly pure spectrum and high - speed frequency agility has became the tendency to the frequency synthesis technology
低相位噪声、高纯频谱和高速捷变的频率合成器成为频率合成技术发展的主要趋势。 |
| 7. | The thesis used a fully digital method that employed the principle of direct digital frequency synthesis to realize the modulation based on dsp
本文采用了完全数字化的方法，是利用直接数字频率合成技术的原理，并基于dsp的系统实现msk调制。 |
| 8. | Secondly , the principle and direct digital frequency synthesis ( dds ) is analyzed deeply . thirdly , the whole system is designed according to the design flow
其次，对实现原理和在设计中需要用到的直接数字频率合成技术进行了深入的分析。 |
| 9. | Direct digital frequency synthesis ( dds ) is a new frequency synthesizing technique which is developed rapidly in recent years
直接数字频率合成( dds )是近年来得到迅速发展的一种新兴频率合成技术，它具有频率精度高、切换速度快、相位连续等优点。 |
| 10. | In fact every manner has advantages and disadvantages , so we can simultaneously use several ones ’ advantages which is called mixed frequency synthesis technology
实际上,由于各种方式各有优劣,完全可以利用优势互补,所以产生了混合式频率合成技术。 |
