| 1. | During debugging , the realization of the drvco ' s lower phase noise was aimed at
在调试过程中，对如何实现drvco的低相噪进行了研究。 |
| 2. | To realize the drvco ' s lower phase noise , a recent presented method was used
为了实现低相噪，在drvco的设计中采用了较新颖的微带结构。 |
| 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. | The design tried to develop high performance frequency synthesizers especially fine resolution and low phase noise frequency synthesizers
本次设计是对高指标频率合成器特别是小步进低相噪频率合成器研制的一次尝试。 |
| 5. | Dds is used to achieve fine resolution , while injection phase lock circuit is used to realize low phase noise high performance input reference frequency
Dds用于实现小步进,而注入锁相电路则用来产生低相噪的高性能参考源。 |
| 6. | The research and development of low phase noise crystal oscillator will not only be with good social benefits , but also be with noteworthy economic benefits
所以低相噪晶体振荡器研制成功不仅有良好的社会效益，而且还能带来可观的经济效益。 |
| 7. | At present , i have carried out and finished the research and producing of low phase noise vcos , but the research of widebanth have n ' t gone deep ( now can achieve normal level )
本课题到目前阶段，主要进行了低相噪lcvco的研究及制作，宽带的研究还未深入进行（目前能达到一般水平） 。 |
| 8. | As for mm - wave radars , they generally require frequency sources of full - coherence 、 high spectrum pureness and frequency - agile ability 。 this task was carried out just aiming at high ? performance mm - wave sources
本课题即是为研制低相噪、低杂散、窄步进、捷变频的全相参毫米波频率源而开展的。 |
| 9. | At last , the paper expatiates the design , simulation and debugging of the drvco and pll in the subject . the realizing method of the low phase noise is analyzed and the conclusion given , too
最后详细叙述了本课题中drvco和pll的设计、仿真和调试，以及在调试中对低相噪的实现所进行的研究，并给出了结论。 |
| 10. | With cad technology the high reliable constant temperature crystal oscillator is emulated , then its phase noise property is optimized , which is an guide to the cad of the low phase noise crystal oscillator hi the future
利用计算机辅助设计技术对高稳定恒温晶体振荡器进行仿真，优化其相位噪声特性，对今后低相噪晶体振荡器的计算机辅助设计具有重要的指导作用。 |
