回波损耗

级联SOA回波损耗分析

Analysis on Return Loss of Cascade SOAs

SOI基可变光学衰减器的回波损耗研究

Return Loss Analysis on SOI-based Variable Optical Attenuator

利用水电容的FFT在线预测结构回波损耗

On-line prediction of SRL by FFT of cable capacitance in water

CATV同轴电缆回波损耗测量及某些波形的分析

Return Loss Measurement for CATV Coaxial Cables and Analysis of Some Waveforms

本文首先通过对数字通信电缆线芯直径的波动周期和幅值同电缆结构回波损耗间关系的分析，得出了通过对线芯直径数据进行在线FFT变换来预先评估结构回波损耗的方法及其步骤。

The relationship between periodical fluctuation of the core diameter and SRL was analyzed . The method predicting SRL using core diameter data FFT transform was found .

本文着重介绍频域法测量CATV同轴电缆回波损耗的方法，并对某些波形进行分析，提出改进建议。

This paper focuses on the return loss measurement methods for CATV cables , of which frequency domain method is chosen . In addition , some waveforms are analyzed and some suggestions for improvement are given .

本文计算了C-Lens准直器的附加耦合损耗以及给出了准直器回波损耗的计算公式。

The additional coupling loss is calculated , and the formulae of return loss of C-Lens collimator are given .

提出了一种新的带有分形性质的RFID天线，利用矩量法对该天线进行了计算，并分析了输入阻抗、回波损耗、辐射方向图等特性参数；

A new kind of RFID antenna which has properties as fractal antenna is proposed . Moment method is used in the analysis of this new kind antenna . The parameters , such as input impedance , return loss , radiation pattern are analyzed .

其中，聚四氟乙烯树脂含量较低的微带天线由于材料间空隙增多，导致介电损耗增大，其VSWR大于2，回波损耗较大。

The antennas which had low resin content will increase holes in composites and result in high dielectric loss . And the VSWR value is large than 2 and high return loss .

因此，制作高回波损耗的光纤连接器应优先选用氧化硅砂纸湿式抛光工艺，抛光时间应控制在20～30s。

So the wet SiO_2 abrasive polishing process be selected by preference when optical fiber connectors with high return loss are manufactured , and polishing time be controlled in the range of 20 ~ 30s .

由于DWDM干线在组网时均采用相同厂商的设备，不同厂家设备互联互通时通过光纤直联即可，仅需要注意光功率、回波损耗2和色散3等信息，不需要在设备上进行特殊设置。

As DWDM network uses the same manufacturers ' equipment , the optical fiber can be directly associated , only need to pay attention optical power , return loss and dispersion and other information without the need for special settings on the device .

均方根相位误差小于3°，插入损耗在1.7~2.9dB之间，回波损耗小于15dB。仿真结果，满足要求。

The RMS is below 3 degrees , the insertion loss is among 1.7 ~ 2.9 dB , and the return loss is smaller than 15 dB .

千兆以太网在UTP上运行时，采用4对全双工方式工作，需增加对UTP的回波损耗、近端串扰、功率和近端串扰等新性能参数的要求。

When the gigabit ethernet work on UTP , it must adopt the4pairs UTP at the full duplex mode , and need to increase some new requirement of performance parameters return loss , NEXT , PSNEXT .

设计了一种宽带的微带线到带状线过渡设计，仿真结果显示，在0~40GHz频率范围内，回波损耗小于15dB，并分析了微带线宽度和几处关键金属通孔对过渡的影响。

A wide band microstrip to stripline transition has been designed and its simulated results show that the return loss is less than 15 dB from 0 GHz to 40 GHz .

给出了计算所得到的波导缝隙天线阵单元的回波损耗参数（S11）和方向图，通过与实验结果相比较，两者吻合得较好，从而证明了该分析模型和计算方法的正确性与有效性。

The computational results of antenna 's directivity pattern and S_ ( 11 ) parameters are compared and in good agreement with the experimental results . The results show that the methods of modeling and calculating are correct and valid .

阻抗的均匀性是影响数字通信电缆传输性能的重要因素，而结构回波损耗（SRL）是表征阻抗沿长度周期性不均匀的重要参数，是评估电缆传输质量的指标之一。

Non-homogeneity of impedance is one of important factors for transmission properties of data communication cable . Structure Return Loss ( SRL ) is an important parameter to periodical non-homogeneity of impedance along length , which is one of characteristic parameters to evaluate cable transmission quality .

本文还通过串并联电容和电阻的方式，对着三款天线分别进行了阻抗匹配，使得在13.56MHz处回波损耗达到最小，并且都达到了很好的匹配效果。

This thesis also through the parallel capacitor and resistor way , to the three paragraphs antenna , the impedance matching is made in 13.56 MHz place return loss minimum , and reached the very good matching effect .

介绍了几种光回波损耗的测量原理和测量方法。

Influences of polishing on return loss of optical fiber connectors ;

对称数字通信电缆结构回波损耗影响因素分析

Analysis of affecting factors on SRL of symmetrical digital communication cable

光纤器件回波损耗测量系统分析

Analysis of Return Loss Measurement System of Optical Fiber Device

数字通信电缆回波损耗与结构回波损耗的辨析

Identification of the return loss and structural return loss of telecom cables

本文讨论了空气隙型光固定衰减器的回波损耗。

This paper discusses the return loss in air-space type fixed optical attenuator .

测试时应测试的内容有：远端串扰、近端串扰、综合近端串扰、结构回波损耗等。

The contents of testing are FEXT , NEXT , PSNT , SRL .

频谱分析仪在回波损耗测量中的应用

Application of Spectrum Analyzer to Return Loss Measurement

空气隙型光固定衰减器的回波损耗

Return Loss in Air-space Type Fixed Optical Attenuator

微波暗室回波损耗的检测

Detection of Return Loss in Microwave Anechoic Chamber

GB/T16530-1996单模纤维光学器件回波损耗偏振依赖性测量方法

Measuring method for polarization dependence of return loss of a single-mode fibre optic component

频谱分析仪使用中有关回波损耗的问题

About Return Loss during Using Spectrum Analyzer

绝缘和屏蔽性能好，减少回波损耗，符合环保要求。

Good insulativity and shielding effectiveness to reduce return loss , complying with RoHS standard .

讨论了插入损耗、回波损耗和固有损耗随入射光功率的变化规律。

The dependences of insertion loss , reflection loss and intrinsic loss on the input optical power are studied .