A Simple and Easy Test Method of Conversion Loss of a Mixer 混频器变频损耗的一种简易测试方法
Intergenerational Allocation of Farmland Conversion and Farmland Resource Loss; The Current Situation of Rural Informationization and Countermeasures in Yanbian Area 农地非农化代际配置与农地资源损失延边地区农村信息化现状及对策研究
Spatial Allocation Efficiency of Farmland Conversion and Farmland Resource Loss in China 农地非农化的空间配置效率与农地损失
This paper analyzes the status of dielectric loss tester and introduces the principles 、 characters 、 test miring and application example of Intelligent AI-6000 ( C) HV Frequency Conversion Dielectric Loss Tester in detail. 分析介质损耗测试仪的现状,阐述了AI-6000(C型)高压智能变频介质损耗测试仪的原理、特点、测试接线及应用实例。
The conversion coefficient of hent loss during grain drying is an important parameter to mark the characteristics of grain dryers. 谷物干燥热耗折算系数,是标定谷物干燥机性能的重要参数。
The structure of mixer is improved, so it shows higher image-rejection as well as lower conversion loss. Also, the isolation between each port is better than before. 对常用混频器的结构进行了改进,通过测试结果可以看出,这种改进能实现较高的镜频抑制度和较低的变频损耗,且各端口间的隔离度也较好。
Analysis and Calculation of the Conversion Loss of Harmonic Mixers 谐波变频器变频损耗的分析与计算
The principle of a frequency conversion instrument for dielectric loss measurement 介质损耗变频测量仪原理与实现
Measured results show that adjusting ports SWR of mixer may improve conversion less of mixer. The biggest conversion frequency loss is reduced about by 10 dB. 测试结果表明,通过调节端口驻波比可以较大改善混频器的变频损耗,使混频器的变频损耗最大减少10dB左右。
An Example for Measuring the Conversion Loss and Noise Temperature of Mixers in Millimeter Wave Band 测量毫米波段混频器的变频损耗和噪声温度的一个实例
Resistance has something to do the roughness only in one-dimensional mathematics model based Saint-Venant Eq, and resistance changes and cant reflected by the original roughness after the newly-built project Get the conversion formula of local loss coefficient and roughness from the relation of frictional loss and local loss. 基于圣维南方程的一维数学模型,其阻力的大小在独立参数中仅同糙率有关,而新建工程后阻力发生变化,不能再用原有的糙率反应局部河段的阻力。
This paper analyses the principal parameters of this diode: The height of barrier, conversion loss, and burnout energy. The fabrication technique is described. 本文分析了UHF混频二极管的势垒高度、变频损耗和抗烧毁能量等主要参数,概述了制造技术。
A system of the utilization of photovoltaic generation and then supply energy by laser was designed, and efficiency of energy conversion instruments and energy loss was studied. 设计了一种太阳能光伏发电-激光供能系统,讨论了系统中能量转换效率和供能损耗问题。
For mixer, a single balanced configuration is chosen, the tested conversion loss is 7dB; 混频器采用了混合环单平衡混频器结构,实测的变频损耗为7dB;
The energy conversion and loss in collision are discussed, a formula of coefficient of restitution is obtained by energy. 讨论碰撞过程中能量转化和能量损失,给出恢复系数的能量表达式。
Development of Frequency Conversion Device of Dielectric Loss Measurement 基于DSP介质损耗变频测量仪的研制
The mainly finished task of this paper is designing and simulating an V band downconverter with low conversion loss, which realized by use of passive 4th harmonic mixing. 本文完成的主要工作是设计、仿真了一种低变频损耗的V波段下变频器。
An example for measuring the conversion loss and noise temperature of mixers in millimeter wave band by using the noise measurement method is discussed in this paper. 讨论了一种利用噪声测量的方法来确定毫米波段混频器的变频损耗和噪声温度的一个实例。
Input and output power of instruments was measured, and efficiency of energy conversion instruments and energy loss was calculated, and effective methods were put forward to improve the system. 测量了各装置的输入输出功率,计算了能量转换装置的转换效率和传输过程中的能量损耗,提出了改进系统的有效途径。
Finally, the measurement results of the conversion loss and noise temperature of a balanced mixer in 8 mm waveband are also presented. 最后给出了八毫米波段半衡混频器的变频损耗和噪声温度的测量结果。
The whole Mathematic Modeling and the layer Mathematic Modeling analysis theory was used to perform the whole power plants productive process energy input, conversion, output and loss diagnosis. 对火电厂生产过程中能量的输入、输出、转换、损耗等方面,用整体数学模型与分层数学模型相结合的方法来研究,能客观地反映各系统、各设备等要素之间的相互关系。
Less than 10 dB conversion loss is obtained for single ended mixer and less than 9 dB conversion loss is obtained for balanced mixer. The two mixers have both successfully been applied to model ⅰ and model ⅱ 3 mm FM/ CW component. 对于单端结构获得小于10dB的变频损耗,对于平衡结构获得小于9dB的变频损耗,这两种结构的鳍线混频器都分别成功地应用于型和型3mmFM/CW组件。
The conversion loss and noise tempe-rature of mixers is determined by changing the IF noise temperature so as to change the noise temperature of the receiver system. 混频器的变频损耗和噪声温度的测量可以用改变中频部分的噪声温度使接收机的系统噪声温度变化来加以确定。
The energy conversion and loss in collision 碰撞的能量转化和能量损失
Second, lowpass filter, phase shifter, combiner which included in image rejection mixer are simulated. The conversion loss and degree of image rejection is tested by spectrum analyzer. 其次,对镜像抑制混频器中的低通滤波器,移相器,合路器进行设计与仿真,并采用频谱分析仪对混频器的变频损耗,镜像抑制度进行实测。
Research the contradiction conversion degree, conversion loss and conversion difficulty, and, based on which, establish evaluation function for the contradiction reduction solution, achieving definite evaluation about the contradiction processing. 研究转化矛盾度,转化损耗及转化难度,并以此构建矛盾化解方案的评价函数,实现对矛盾处理过程优劣情况的具体评价。
The advantages of this multiplier are low conversion loss, compact structure, small chip size, and simple circuit topology. 该倍频器的优点是转换损耗低、结构紧凑、芯片面积小、电路拓扑结构十分简单。
A uniform risk loss model are defined, and a basic loss estimate method is also proposed, which is composed of loss extent model, loss value conversion model, loss time value model. 建立了统一的桥梁风险损失概念模型,提出了由损失幅度模型、损失价值转换函数、损失时间价值模型三个基本模型组成的桥梁风险损失量测的通用方法。