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。
Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。
A broadband, high resolution and low phase noise frequency synthesizer used in electronic detection and electronic countermeasure system is described in detail.
详细介绍了一种用于电子侦察与对抗系统中的宽带、高分辨率、低相位噪声频率合成器。
All electronic SS type camera tube is characterized by its low expense of power, variable scan frequency, high resolution, small size and light weight.
采用图案电极的静电聚焦静电偏转(SS型)摄像管，具有功耗低、扫描频率可变、分辨率高、体积小和重量轻等优点。
The main merits of DDS are high resolution and fast frequency switching speed, but the defects of low output frequency and bad spurious performance restrict the application of DDS.
DDS的主要优点是其高分辨率和高捷变速度，但是其较低的输出频率和较差的杂散性能制约了其应用。
Many experiments on low cut filter were carry out to meet the requirement that balance of high frequency energy and low frequency energy is necessity for high resolution seismic exploration.
根据高分辨率地震勘探对高低频能量均衡的要求，对低截滤波进行了多次试验。
It has great advantages of frequency stability, high frequency resolution, speed of frequency switching, simple analysis of phase noise and spurious, small size and low power.
其具有频率稳定度好、频率分辨率高、频率切换速度快、相位噪声和杂散干扰分析相对简单、体积小、功耗低等优势。
DDS has both the advantages of high frequency resolution, rapid frequency change rate and low phase noise and the disadvantage of bad spur suppression performance with Max value of -65 dB.
DDS的优点是具有极高的分辨率、频率转换速率快、相位噪声低等；缺点是杂散度抑制比性能差，很难做到- 65d B。
Design a synthesizer based on DDS, whose characteristics are fast frequency change speed, high resolution and low phase noise et al.
并以DDS为核心设计了接收机的细扫本振，该本振具有变频速度快、分辨率高、相噪指标高等特点。
Design a synthesizer based on DDS, whose characteristics are fast frequency change speed, high resolution and low phase noise et al.
并以DDS为核心设计了接收机的细扫本振，该本振具有变频速度快、分辨率高、相噪指标高等特点。
应用推荐