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- The normal idea to make up a digital controled oscillator (DCO)of the digital phase locked loop (DPLL)is to delete the pulses unwanted It need that the master clock frequency must be more faster than the output frepuency of the DPLL. 传统的数字锁相环 (DPLL)多采用吞脉冲的方法来实现DCO ,此方法要求工作频率远高于DPLL的输出频率。
- In the method,DRO PLS is applied to be local oscillator to assure low phase noise performance and synthesizer in L band to assure high agile synthesizer speed. 其中,DRO PLS保证低相位噪声性能; L波段捷变频频综保证捷变频功能。
- One example is the phase comparator of a phase locked loop. 一个例子是相锁环状态下的相位比较器。
- Voltage controlled oscillator (VCO) and frequency divider (FD) are the main components of phase locked loop (PLL). For VCO, low phase noise can avoid the affection of Adjacent-Channel Interference. 摘要:压控振荡器与除频器是锁相迴路中,主要的电路之一。对压控振荡器而言,低相位杂讯可避免造成相邻通道的干扰。
- Purpose: UHF frequency converter, local oscillator,wide band am plifier. 用途:用于超高频频率转换,负载振荡器,宽频放大。
- Phase locked loop (PLL) has been widely used in communication system. 锁相环路在通信系统中得到了广泛的应用。
- Resolution of Systematic Design Trouble with PLD Interior Phase Lock Loop. 使用PLD内部锁相环解决系统设计难题。
- PLL frequency synthesizer with DDS reference will adapt to local oscillator of modern radio. 采用DDS输出作为参考的PLL频率合成器非常适合用做现代电台的本振。
- LNB2 SUBFOCUS(138)common high-frequency tuner [with both single and double local oscillator]. LNB2副焦(138)为普通高频头[单本振、双本振均可]。
- The phase jitter of output signal of the PLL( phase locked loop) frequency doubler is analyzed. 定量分析了数字式锁相倍频器输出信号的相位抖动.
- parametric phase locked oscillator 参数锁相振荡器
- phase locked subharmonic oscillator 锁相谐波振荡器
- Select Installation and then Antenna Setting, and set respectively the local oscillator frequencies of the high-frequency tuner of 146, 138KU, 138C band and so on. 选择安装里的天线设定,分别设置146、138KU及138C波段等等的高频头本振频率。
- A phase locked wavelength drive prevents peak shifts and peak suppression at high scan speeds. 相位锁定波长驱动技术可以防止仪器在快速扫描时吸收峰的偏移。
- Josephson junction mixer has much excellence, including its high sensitivity and harmonic, low local oscillator frequency and microwave power, low noise and wide frequency band. 摘要高温超导混频器具有灵敏度和谐波次数高、所需的本振和微波信号功率小、噪声低、工作频带宽等诸多优点。
- Phase locked loops (PLL) are electronic systems widely used in different fields of applications. 锁相回路(PLL)做为一种电子系统广泛的用于不同的应用领域。
- It serves as the signal generator in a transmitter and in a receiver, and the local oscillator is used together with a mixer to convert the received RF signal to an IF signal. 它在传输器跟接收器中是作为标准的讯号产生器,本地震荡器通常是跟混波器一起使用将射频讯号转换到中频。
- The author's main work is the development of the LO(local oscillator) in DTV transmitter, it is one of the important research projects planned by Shanghai Mingzhu Company. 作者的主要工作就是设计数字电视发射机中的本振频率源,这是上海明珠公司数字电视发射机开发项目的一个重要部分。
- TMS320F240 DSP is used to realize the digital Phase Locked Loop(PLL) and real-ize the hot-swap function of the parallel system. 采用TMS320F240型DSP芯片实现数字锁相同步,实现并联系统的热插拔功能。