Description: 小数分频技术解决了锁相环频率合成器中的频率分辨率和转换时间的矛盾, 但是却引入了严重的相位噪声,
传统的相位补偿方法由于对Aö D 等数字器件的要求很高并具有滞后性实现难度较大。$2 调制器对噪声具有整形的功
能, 因而将多阶的$2 调制器用于小数分频合成器中可以很好地解决他的相位噪声的问题, 大大促进了小数分频技术的
发展和应用。文章最后给出了在GHz 量级上实现的这种新型小数分频合成器的应用电路, 并测得良好的相噪性能。-Fractional-N technology to solve the PLL frequency synthesizer in the frequency resolution and conversion time of contradictions, but the introduction of a serious phase noise, the traditional method of phase compensation A? D because of the number of devices, such as demanding and have the lag is more difficult to achieve. $ 2 modulator with noise shaping function, and thus will be more than the $ 2-order modulator for fractional-N synthesizer can be a good solution to his problem of phase noise, contributed significantly to the fractional-N technology development and applications. Finally, the article in the GHz order to achieve this new fractional-N synthesizer of the application circuit, and measured a good phase noise performance. Platform: |
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Author:朱成发 |
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Description: 本书讨论了时间域、频率域、数字域、调制域电子测量的主要方法，介绍了应用MATLAB仿真的方法实现电子测量中的信号源(含VCO和PLL)、示波器、频谱仪、瀑布图仪、相位仪、眼图仪、逻辑分析仪、时域反射仪、取样示波器、矢量示波器、矢量网络分析仪等测量仪器，并简要介绍了各仪器的工作原理、参数设置要点和注意事项。书中还给出了大量的仿真实例，对一些典型例子进行了分析和讨论。-This book discussion has time domain, and frequency domain, and digital domain, and modulation domain electronic measurement of main method, introduced has application MATLAB simulation of method achieved electronic measurement in the of signal source (containing VCO and PLL), and oscilloscope, and spectrum instrument, and falls figure instrument, and phase instrument, and eye figure instrument, and logic analysis instrument, and Shi domain reflection instrument, and sampling oscilloscope, and vector oscilloscope, and vector Network Analyzer, measurement instrument, and briefly introduced has the instrument of work principle, and parameter set points and note matters. A lot of simulation results are also given in the book, conducted an Platform: |
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Author:zofulan |
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Description: 本书讨论了时间域、频率域、数字域、调制域电子测量的主要方法, 介绍了应用MATLAB仿真的方法实现电子测量中的信号源(含VCO和PLL)、示波器、频谱仪、瀑布图仪、相位仪-
This book discusses the main method of time domain, frequency domain, the digital domain and modulation domain of electronic measurement, introduces the application of MATLAB simulation method to realize measurement of electron source (including VCO and PLL), oscilloscope, spectrum analyzer, waterfall meter, phase meter
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Size: 3349504 |
Author:童云飞 |
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