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down conversion
相关语句
  下变频
     Application of CORDIC Algorithm in Digital Down Conversion
     CORDIC算法在数字下变频中的应用
短句来源
     High speed ADC, digital down conversion and DDS technology is adopted to compose the digital receiver system.
     采用高速ADC、数字下变频DDC和DDS技术构建了以下数字接收系统。
短句来源
     Digital down Conversion Processing Based on HSP50016
     基于HSP50016的数字下变频处理
短句来源
     Design and Research on CMOS Direct Down Conversion Mixer for UWB System
     超宽带系统中CMOS直接下变频混频器的设计和研究
短句来源
     An algorithm of digital down conversion based on FPGA
     一种基于FPGA的数字下变频算法研究
短句来源
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  “down conversion”译为未确定词的双语例句
     Firstly, the basic theory of digital up/down conversion is introduced, and then, the available structures of Cascaded Integrator Comb (CIC), which includes the traditional CIC, Sharpen CIC (SCIC) and CIC+ISOP (Interpolated Second-Order Polynomial), are compared.
     文中首先介绍了数字上下变频的基本理论; 然后比较了目前已有的各种多级抽取/内插滤波器:CIC原型滤波器、Sharpen CIC滤波器以及CIC+ISOP(Interpolated Second-Order Polynomial)滤波器;
短句来源
     Improved Method for Down Conversion of the Spatial Resolution of MPEG-2 Video
     改进的MPEG-2视频编码流空间分辨率下变换方法
短句来源
     Implementation of High-Speed Up/Down Conversion FIR Filter on FPGA
     高速上下变频FIR滤波器的FPGA设计
短句来源
     The separation for up convertion is larger than 10 nm, and down conversion is larger than 20 nm.
     向下波长变换间距大于 2 0nm ,向上波长变换间距大于 10nm。
短句来源
     We also introduced some concept of digital radio, including digital direction synthesizer (DDS) and digital down conversion (DDC) and digital filter.
     介绍了数字直接合成器 (DDS)、数字下变频器 (DDC)、数字滤波器等数字无线电经常用到的概念 .
短句来源
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  相似匹配句对
     On Conversion
     论转化构词法
短句来源
     2, the research of digital down conversion.
     其次,文章对输入信号进行了数字下变频研究;
短句来源
     Design of Digital Down Conversion with FPGA
     基于FPGA的数字下变频研究实现
短句来源
     DOWN IN THE VALLEY
     在山谷里
短句来源
     conversion of flavanones.
     黄烷酮的转化.
短句来源
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  down conversion
A self-organized parametric down conversion was observed if the second-harmonic seeding radiation had been above the saturation level.
      
Self-organized parametric down conversion and photoinduced reflectivity in optical fibers
      
A two-photon state was generated by optical parametric down conversion.
      
The emphasis in this paper is to exploit currently available fibre-pigtailed 980 nm and multimode high-wattage 800 nm pumps for both up and down conversion schemes.
      
The test methodology has been applied to a mixer in the first down conversion stage of a GSM receiver, estimating its conversion gain, 1dB compression and third-order interception points.
      
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The evolution operator of state for degenerate parametric down-conversion has been obtained. By means of state function we have studied the statistical properties of light field at degenerate parametric down-conversion.

通过经(?)泵浦场的简并参量下转换过程的薛定谔方程的解,讨论了简并参量下转换光场的统计性质.

A pair of correlated light quanta of 532 nm wavelength with the same linear polarization but divergent directions of propagation was produced by non-linear optical parametric down conversion in a crystal of deuterated potassium di-hydrogen phosphate from a 100 ps duration laser pulse of 266 nm wavelength. Each light quantum was converted to a circular polarization state or a linear polarization state (orthogonal) and was reflected by a turning mirror to superpose with the other at a beam splitter to produce...

A pair of correlated light quanta of 532 nm wavelength with the same linear polarization but divergent directions of propagation was produced by non-linear optical parametric down conversion in a crystal of deuterated potassium di-hydrogen phosphate from a 100 ps duration laser pulse of 266 nm wavelength. Each light quantum was converted to a circular polarization state or a linear polarization state (orthogonal) and was reflected by a turning mirror to superpose with the other at a beam splitter to produce a two-quantum superposition state. For coincident detection of the two light quanta at separated detectors, correlations of the Einstein-Podolsky-Rosen type for the polarizations have been observed as predicted by our analysis. In preliminary runs with limited bata we have measured a violation of Bell's inequality by three standard deviations. We are planning to extend our experiments to include a truly random delayed choice between two analyser settings at each detector while maintaining a spaoelike separation between the detectors.

利用激光脉冲经过KDP晶体的非线性光学参量过程转换为一对相干光量子.在两个不同探测器上作光子符合探测,观察到爱因斯坦-泡道尔斯基-洛森型偏振相关及对Bell不等式的违背.

Using the linearized langevin equations and the spectral matrix, we discuss the fluctuation spectra of signal mode in the output field from a F-P cavity below or above threshold for the process of non-degenerate parametric down-conversion. It is indicated that the signal and idler modes usually are in minimum-uncertainty states.

利用线性Langevin方程和谱矩阵,采用全量子方法讨论了非简并参量下转换中,腔外信号模在阈值以上和阈值以下的起伏谱,得出在这一过程中信号模与闲置模通常处于最小测不准态.

 
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