A novel method to develop a frequency synthesizer with wide frequency coverage, fast frequency switching speed, and low phase noise is proposed.
提出了一种宽相对覆盖、低相位噪声的捷变频频率合成方法。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
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。
The generated signals have advantages of high frequency resolutions, fast frequency switching speed, low phase noise, the ability to switch frequencies while maintaining constant phase.
具有频率分辨率高、频率切换速度快、频率切换时相位连续、输出相位噪声低等优点。
It has the higher switching speed and frequency and can be used as the pilot valve for a larger flow rate valve, or as a direct control valve for small flow rate hydraulic loop.
该阀具有很高的切换速度和频率，可以用来作为大流量高速开关阀的先导控制阀，也可以在小流量回路中直接作为控制阀使用。
Arcing: The RFI (radio frequency interference) generated by high voltage switching may disrupt high speed logic circuits.
电弧：高压切换产生的RFI(射频干扰)可能会干扰高速逻辑电路。
To achieve the precision control of phase current or phase flux linkage in switched reluctance motor (SRM), the higher switching frequency of converter is required to increase dynamic response speed.
为了实现开关磁阻电机(SRM)绕组电流或磁链的精确控制，必须提高SR M功率变换器的工作频率以提高系统的动态响应速度。
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。
Meanwhile, PWM inverters using high switching frequency device that shortens the rise time of PWM output pulse have been widely applied in high-speed AC driving locomotive.
同时，高速交流传动机车广泛采用高开关频率器件的脉宽调制（PWM）逆变器，使得逆变器输出脉冲具有陡上升沿。
The FM response magnitude and phase variation effects laser on the high speed frequency switching.
FM响应的大小和相位变化影响激光器的高速频率交换。
The speed of switching component is the primary factor that influences boosting frequency of inverter. Compared with IGBT, MOSFET can be used to improve dynamic responding speed.
开关管的开关速度是影响逆变焊机频率提高的主要因素，通过比较IGBT和MOSFET的优缺点，认为MOSFET焊机可以获得较好的动态响应速度。
Three different architectures (time, space and frequency-division) are used in high speed and real time switching systems.
在高速实时的光交换系统中有时分、空分和频分主三种交换方式。
The results indicate that the proposed controller is capable of maintaining the torque switching frequency constant and reducing the torque ripple, particularly at low speed.
结果表明提出的控制器可以保持开关频率恒定，并降低了转矩脉动，尤其在低速时。
Solenoid valve is open and fast speed, and tends to be used in a small volume and small pressure to the switching frequency of the local electric valve big contrast.
电磁阀是快开和快关的，一般用在小流量和小压力，要求开关频率大的地方电动阀反之。
High Speed Switching: Frequency Translators listed are measured from any set value to any value.
高速开关：所列的变频器可在任何设定值于任何值之间进行衡量。
High Speed Switching: Frequency Translators listed are measured from any set value to any value.
高速开关：所列的变频器可在任何设定值于任何值之间进行衡量。
应用推荐