noise factor

Automatic gain control technique in microwave noise figure analysis;

微波噪声系数分析中自动增益调整技术

Noise figure measurement within high temperature superconductor mixer;

高温超导混频器噪声系数测量

The development of a special noise factor tester

一种专用噪声系数测试仪的研制

The noise factor analyzer’s operation principle and the basic noise factor measurement method, Y factor method, are described.

论述了噪声系数分析仪的工作原理和噪声系数最基本的测量方法——Y因子法。

After analyzing some factors influencing the receiver performance,for example,noise factor,frequency conversion loss,dynamic range,isolation degree,mixing distortion.

从混频器的基本概念出发,分析了混频器设计中的关键技术,如噪声系数、变频损耗、动态范围、隔离度、混频失真等对接收机性能的影响,并从工程角度出发,指出在工程设计中应注意的要点。

From the rate and propagation equations describing Ytterbium-doped fiber amplifier system,the gain and noise figure are calculated,and the effect of pump power and device length on gain and noise is also discussed with 975nm pump wavelength.

对连续工作方式下掺Yb光纤放大器的增益与噪声特性进行理论研究,从描述掺Yb光纤放大器的速率方程与光传输方程出发,计算了掺Yb光纤放大器的增益与噪声指数,讨论在975nm泵浦光的作用下,泵浦功率、器件长度对放大器增益和噪声指数的影响。

The maximum effective noise figure (ENF) is -0.

信号经 60km的普通单模光纤传输后 ,平均开关增益为 1 6 5dB ,增益平坦度为 1 5dB ,最大等效噪声指数为 - 0 9dB 。

, the switch speed, extinction ratio, noise figure and dynamic range, of the SOA to be used as the gate, are analyzed.

对ＳＯＡ 作为开关中的选通门的四个性能参数即开关速度、消光比、噪声指数和动态范围作了分析，指出了改善各性能参数的途径。

Application of noise functions to the wood texture;

噪声函数在木纹纹理中的应用

Using the noise function of the software package and combining with the AD/DA technology,the signal is added a noise in.

用软件工具包的噪声函数,结合AD/DA技术,对信号进行加噪。

Method to reduce the uncertainty of noise coefficient measurement;

一种减小噪声系数测量不确定度的方法

Based on discussion and analysis of the noise coefficient of multilevel amplifier,an amplifier with low noise was introduced.

本文在对多级放大噪声系数理论分析讨论的基础上,介绍了一种低噪声μV信号放大器的设计与制作。

The way to reduce total noise coefficient is indicated for multiple amplifier.

本文用混合π型噪声模型 ,讨论了共发射极放大器的主要噪声来源 ,最佳源电阻和最小噪声系数 ,指出在多级放大器中降低总噪声系数的方向 ,设计出了一种低噪声偏置电路 。

Sonar array flow noise data acquisition based on TMS320VC5509A

基于TMS320VC5509A的声呐阵流噪声数据采集系统

A separation method of naval ship radiated noise sources using measure data of radiated noise was introduced.

介绍一种从舰艇辐射噪声数据中分离辐射噪声源的方法.

Lévy White Noises and Fractional Lévy Noises on Gel'fand Triple

Gel'fand三元组上的Lévy白噪声和分数Lévy噪声

DBRN (Decibels above Reference Noise)

超过基准噪声的分贝数

noise figure measuring set for microwave equipment

微波噪声指数测量仪

decibels above reference noise

超出参考噪声分贝数;超过基准噪声的分贝数

Acoustic Reflex Growth Function in Noise Induced Hearing Loss

噪声性听觉损害的声反射增长函数

Interior noise evaluation and noise source identification of a fuel cell vehicle based on psychoacoustic parameters

基于心理声学参数的燃料电池轿车车内噪声评价及噪声源识别

A Numerical Differentiation Method for Period Function with Noisy Data

一种带噪声的周期函数数值微分方法

The Application of Digital AGC in NFA Named AV3984A

数字AGC在AV3984A噪声系数分析仪中的应用

The Parameter Optimization and the Resisting Noise Analysis of the Rail Noise Controller;

钢轨噪声控制器的参数优化和降噪效果分析

Traffic noise in this housing estate was assessed using Noise Impact Index (NII).

应用噪声冲击指数法对小区交通噪声进行总体评价 .

Research on Numerical Simulation of Structural Noise/Intake Noise and Optimization Design;

发动机结构噪声和进气噪声的数字化仿真及优化设计研究

Most of the cities were affected by light noise pollution.

多数城市受到轻度噪声污染。

measuring set of noise figure of TWT

行波管噪声指数测量装置

digital pseudo random white noise generator

数字式伪随机白噪声发生器

On Improving HSI Noise Prediction for Helicopter Rotor in Forward Flight When Flowfield is Partially near Sonic Speed

旋翼前飞气动噪声高效数值算法研究

Noise figures of cascaded two-port networks with unequal bandwidth

不等带宽两端口网络级联的噪声系数