Design and Fabrication of C Band Low Cost Frequency-variable Broad Band Phase Locked Local Oscillator Source 低成本C频段宽带变频锁相源的设计与实现
Injection locked local oscillator 注入锁定本地振荡器
In modern radar and communication system, phase noise of local oscillator ( LO) becomes a vital factor of system performance. 在现代雷达和通讯系统中,本振相位噪声越来越成为决定系统性能的关键因素。
Local Oscillator Arrays of Receiving Antenna Using Injection-Locking Technology 基于注频锁相技术的接收天线本振阵列
A Local Oscillator of a Demonstrative Model of the Receiver of the FAST FAST模型接收机中的本地振荡器
Design and Implementation of Local Oscillator Based on DDS and PLL 一种基于DDS和PLL技术本振源的设计与实现
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。
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。
Therefore it satisfies operating requirements for time-frequency system and high-stability local oscillator, and has good application prospects. 因此比较好的满足了时频系统,特别是高稳定本振系统的使用要求,而且有着良好的应用前景。
At the same time, the possibility of controlling offset frequency between transmitter and local oscillator light in pulse laser heterodyne is discussed. 同时,讨论了在激光外差探测中本振和主振激光间偏频控制的可能性。
Optimal Local Oscillator Power in Optical Heterodyne System 光外差接收系统中的最佳本振功率
Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive-applied technique. 固定频率源可以在在通讯系统和雷达系统中作为本机振荡器,也可以作为数字电路的基准时钟信号,因此得到了广泛的应用。
Research of Anti-vibration System of the sources of Lock Phase and Local Oscillator in an Airborne Radar Frequency Synthesizer 某机载雷达频综器中锁相源和本振源的隔振系统研究
The effect of local oscillator syntonization error and triggering time synchronization error on bistatic SAR imagery are analyzed based on their error models. Useful simulation results are provided for system design. 本文重点研究了双基地SAR本振相位同步误差与触发时间同步误差对成像的影响,建立了误差模型,给出了仿真试验结果,为系统设计提供了参考依据。
This oscillator can widely be used as a local oscillator in 12 GHz home TV receiver for satellite-relayed programs. 该振荡器可作为本振源在12GHz家用卫星广播电视接收机中广泛应用。
A Practical Local Oscillator VCO Control System 一种实用的本振源VCO控制系统
This is a frequency receive monitor system with a phase-locked local oscillator. 本系统是一带有锁相稳频本振源的频率监视接收系统。
The polarization direction of signal is required to match with that of local oscillator. 在相干光通信等方面,要求信号光与本地振荡光偏振方向相匹配。
This paper discussed the phase noise of a digital TV tuner local oscillator. Based on the analysis of direct digital synthesizer ( DDS) theory and feature, it presented a method to design the tuner local oscillator using DDS hybrid PLL ( phase lock loop) circuit. 讨论了数字电视调谐器本振相位噪声,在分析直接数字频率合成器(DDS)的原理及特点的基础上,提出了一种DDS与锁相环(PLL)混合电路用于调谐器本振的方法。
The ADF4360-7 synthesizer chip was used to generate local oscillator of GPS receiver. 给出了利用ADF4360-7频率合成器芯片来产生全球定位系统(GPS)接收机本地振荡信号的方法。
The frequency error canceling method was employed to achieve stable low-IF signal, which excluded the frequency offset from microwave local oscillator and kept the phase relationship between two input signals. 利用频率误差对消的方法,获得了稳定的低中频信号,不包含微波本振源的频率偏移且保持了2路输入信号之间的相位关系。
The system adopts a measurement method of the time interval based on digital phase-shifting technique and PI control algorithm for adjustment, completing the frequency calibration of local oscillator. 然后,本文采用了基于数字移相技术的时间间隔测量方法和PI控制算法,完成了本地晶振的频率校准。
The input local oscillator signal is provided by crystal oscillator. 系统的本振输入信号由晶振提供。
Finally, this paper analyzes the waveform and spectral purity of the video signal generator and output waveform of local oscillator. 最后,对视频信号发生器和本振信号发生器的输出波形进行了波形分析和频谱纯度分析。
Implementation of this method is very good signal center frequency tracking, NCO Centre for the local oscillator output signal with the input signal frequency change. 该方法很好的实现了信号中心频率的跟踪,使NCO输出的本振信号随输入信号中心频率的变化而变化。
It adopts sequential radio frequencies to drive a phase modulator to achieve synchronous frequency sweeping for both probe light and local oscillator. 它通过时序的射频信号控制相位调制器从而实现对探测光和本振光的同步扫频。
This thesis is about the design of local oscillator circuit for wireless communication system in standard digital CMOS technology. 本篇论文的主题是在标准数字CMOS工艺条件下,研究单片集成无线通信系统中本机振荡电路的设计。
Transmitting module consists of a frequency synthesizer ( local oscillator signal), a quadrature modulator and a power amplifier. 发射模块包括频率合成器(本振信号)、正交调制器和功率放大器。
With the development of radar and wireless communications, the request for the local oscillator is higher and higher in the system. 随着雷达和无线通信事业的不断发展,系统对本振源提出了越来越高的要求。