| 1. | Design of broadband phase locked sweep frequency source
2306在锁相环式频率合成器中应用 |
| 2. | Run command / frequency source are easy to select with a dip switch
通过dip开关，能容易的选择运行命令/频率源。 |
| 3. | The paper was based on the goal of low phase noise , high resolution to study and analyze the wideband frequency source
本文正是基于低相位噪声、高分辨率为目的,对宽带频率源作了研究和分析。 |
| 4. | To meet the waveform requirements , dds + multiplier + upconverter was used to realize the c - band fmcw frequency source
为满足波形参数要求,本文设计了dds +倍频+上变频的c波段三角形调频连续波频率源。 |
| 5. | At last , the stability of frequency can be obtained according to the case that the phase between two frequency source varies with time
最后根据两频率源间的相位随时间的变化情况，换算出被测频率源的频率准确度和稳定度情况。 |
| 6. | The whole system adopts one pll only to control vco to output the ultra wideband frequency of 2 ~ 12ghz , and realizes small volume , low cost microwave frequency source
整个系统采用单环锁相控制vco ,输出2 ~ 12ghz的超宽带频率,实现了小体积、低成本的微波频率源。 |
| 7. | Direct analog frequency synthesis is an important way to yield high - performance frequency source . however it usually leads to high volume and fairly high spur level
直接式频率合成是获得高性能毫米波频率源的一个重要方式,但是它体积大,设备复杂,杂散也较大。 |
| 8. | Whatever it is radar , eccm equipment , communication equipment or instrument , frequency source with high stability is needed to guarantee the quality of carrier signal
无论是雷达、电子对抗，还是通信、仪器设备等都需要高稳定度的频率源，以保证载波信号的质量。 |
| 9. | 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。 |
| 10. | The tested results show that the designed c - band fmcw frequency source meets the waveform requirements , and its output power is more than 20dbm . however , the spur level was too high in the bandwidth
实验表明所设计的c波段fmcw频率源达到波形参数要求,发射功率达到20dbm ,但带内杂散抑制不理想。 |
